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IIT-JEE MAIN: CHEMISTRY TEST-10

3

TEST SYLLABUS : COMPLETE CHEMISTRY

Your Target is to secure Good Rank in IIT-JEE - 2020

Important Instructions:

(1) There is only one correct option.

(2) Duration of Test is 1 Hour and Questions Paper Contains 30 Questions. The Max. Marks are 120.

(3) Each correct answer carries 4 marks, while 1 mark will be deducted for every wrong answer. Guessing of answer reduces your effort. 

1 / 30

M2SO(M+ is a monovalent metal ion) has a Ksp of 3.2 x 10–5 at 298 K. The maximum concentration of SO4–2 ion that could be attained in a saturated solution of this solid at 298 K is

2 / 30

The intermediate formad during the addition of HCl to propene in the presence of peroxide is

3 / 30

Which one of the following is an example of coordination isomerism ?

4 / 30

The main product of the following reaction is

 

5 / 30

The IUPAC name of

6 / 30

A metal X on heating in nitrogen gas gives Y.Y on treatment with H2O gives a colourless gas which when passed through CuSO4 solution gives a blue colour. Y is

7 / 30

Zirconium phosphate [Zr3(PO4)4] dissociates into three zirconium cations of charge + 4 and four phosphate anions of charge – 3. If molar solubility of zirconium phosphate is denoted by S and its solubility product by Ksp then which of the following relationship between S and Ksp is correct?

8 / 30

The repeating units of acrilan are

 

9 / 30

The final product of the following sequence of reactions

10 / 30

The reaction of

with HBr gives

11 / 30

The standard reduction potential for Cu2+/Cu is + 0.34. Calculate the reduction potential at pH = 14 for the above couple. (Ksp Cu(OH)2 = 1 × 10–19)

12 / 30

In the following compounds,

the order of acidity is

13 / 30

For a chemical reaction X → Y, the rate of reaction increases by a factor of 1.837 when the concentration of X is increased by 1.5 times. The order of the reaction with respect to X is

14 / 30

A current of 2.0A when passed for 5 hours through a molten metal salt deposits 22.2g of metal of atomic weight 177.The oxidation state of the metal in the metal salt is

15 / 30

Chlorobenzne reacts with trichloro acetaldehyde in the presence of H2SO4.

The major product formed is:

16 / 30

Urea and hydrazine react to form ammonia gas along with compound X which reacts with aldehydes and ketones to form specific crystalline derivatives. X is

17 / 30

The solution containing 4.0 % PVC in one litre of dioxane was found to have osmotic pressure of 6.0 x 10–4 atm at 300 K. The molecular mass of polymer is

18 / 30

The electrolyte most effective for bringing about coagulation of Fe (OH)3 sol is

19 / 30

In which of the following cases, the stability of two oxidation states is correctly represented

20 / 30

A wedding ring presented to a bride contains 788 mg of gold and rest diamond. If the ring weighs 1 g the bride receives (At wt : Au = 197, C = 12)

21 / 30

Final product (D) formed in the following reaction sequence is

22 / 30

A and B in the reaction,

23 / 30

Which of the following has a shape different from others?

24 / 30

A gaseous mixture of three gases A, B and C has a pressure of 10 atm. The total number of moles of all the gases is 10. If the partial pressures of A and B are 3.0 and 1.0 atm respectively and if ‘C’ has mol. wt of 2.0 what is the weight of ‘C’ in g present in the mixture.

25 / 30

Potassium dichromate when heated with concentrated sulphuric acid and a soluble chloride, gives brown-red vapours of :

26 / 30

The catenation tendency of C, Si and Ge is in the order Ge < Si < C. The bond energies (in kJmol– l) of C – C, Si – Si and Ge –Ge bonds are respectively;

27 / 30

Oxidation of succinate ion produces ethylene and carbon dioxide gases. On passing 0.2 Faraday electricity through an aqueous solution of potassium succinate, the total volume of gases (at both cathode and anode) at STP (1 atm and 273 K) is :

28 / 30

If the shortest wavelength in Lyman series of hydrogen atom is A, then the longest wavelength in Paschen series of He+ is :

29 / 30

A solution containing As3+, Cd2+, Ni2+ and Zn2+ is made alkaline with dilute NH4OH and treated with H2S. The precipitate obtained will consist of

30 / 30

Di-n-propyl ether and diallyl ether can be distinguished by

Your score is

The average score is 18%

0%

IIT-JEE MAIN: CHEMISTRY TEST-9

2

TEST SYLLABUS : COMPLETE CHEMISTRY

Your Target is to secure Good Rank in IIT-JEE - 2020

Important Instructions:

(1) There is only one correct option.

(2) Duration of Test is 1 Hour and Questions Paper Contains 30 Questions. The Max. Marks are 120.

(3) Each correct answer carries 4 marks, while 1 mark will be deducted for every wrong answer. Guessing of answer reduces your effort. 

1 / 30

The threshold frequency of a metal is 1 x 1015s–1. The ratio of maximum kinetic energies of the photoelectrons when the metal is irradiated with radiations of frequencies 1.5 x  1015 s–1 and 2 x 1015 s–1 respectively would be

2 / 30

A mixture of two aromatic compounds A and B is separated by dissolving in chloroform followed by extraction with aq. KOH solution. The alkaline aqueous layer gives a mixture of two isomeric compounds on treatment with carbon tetrachloride. The organic layer containing compound A gives an unpleasant odour on treatment with alcoholic solution of KOH. Compounds A and B respectively are

3 / 30

Which of the metal is extracted by Hall-Heroult process?

4 / 30

The molar specific heat of air at room temperature and 1atm pressure is 25 J K–1mol–1. How much heat is required to heat the room through 10 Kelvin at room temperature if 144g of air is present in room. Vapour density of air = 14.4.

5 / 30

The half life of a first order reaction is 10 min. If initial amount is 0.08 mol L-1 and concentration at some instant is 0.01 mol L-1. What is the time elapsed ?

6 / 30

The hybridization states of the central atoms in the complexes [Fe(CN)6]3–, [Fe(CN)6]4– and [Co(NO2)6]3– are

7 / 30

Consider the reaction sequence below :

 

8 / 30

In order to convert R – X to R – R’ which reaction is most suitable

9 / 30

A hydrocarbon with five carbon atoms in the molecule, decolourizes alkaline KMnO4, but does not give a precipitate with ammonical Cu2Cl2 solution. The hydrocarbon is possibly

10 / 30

Consider the reaction CaCO3(s)  ⇌ CaO(s) + CO2 in a closed container at equilibrium. What would be the effect of addition of CaCO3 on the equilibrium concentration of CO2 ?

11 / 30

Lithium chloride has a cubic structure as shown below. If the edge length is 400 pm., then the radii of Cl– ions is

 

12 / 30

Bond distance in HF is 9.17 × 10–11 m. Dipole moment of HF is 6.104 × 10–30 Cm. The percentage ionic character in HF will be : (electron charge = 1.60 × 10–19 C)

13 / 30

In the Freundlich adsorption isotherm equation graph. The slope is equal to

 

14 / 30

How many P–H and O–H bonds respectively, are present in H4P2O7 molecule?

 

15 / 30

Normality of a mixed solution of sulphuric acid and hydrochloric acid is 0.6 N. 20 mL of this solution gives 0.4305 g of AgCl on reacting with AgNO3 solution. The strength of H2SO4 in g/ L in the mixed solution is

16 / 30

Which series of reactions correctly represents chemical reactions related to iron and its compound?

17 / 30

Which of the following gives n-nitrosoamine on reaction with nitrous acid?

18 / 30

19 / 30

Which of the following represents the correct order of stability?

20 / 30

Among the acids given below CH3CH2COOH (X); CH2 = CHCOOH (Y) and CH ≡C-COOH (Z) The correct order of increasing acid strength is

21 / 30

The major product of the following reaction is :

22 / 30

A solution containing a group–IV cation gives a precipitate on passing H2S. A solution of this precipitate in dil.HCl produces a white precipitate with NaOH solution and bluish–white precipitate with basic potassium ferrocyanide. The cation is :

23 / 30

The complexes of Nickel (II) can be

24 / 30

Identify the feasible reaction among the following:

25 / 30

Which of the following is a high-spin (spin-free) complex?

26 / 30

What is the standard reduction potential (E°) for Fe3+ → Fe ? Given that

Fe2+ + 2e → Fe; E0Fe2+ / Fe  = – 0.47 V

Fe3+ +e → Fe2+; E0Fe3+ / Fe2+  = + 0.77 V

27 / 30

Which of the following order of root mean square speed of different gases at same temperature is true?

28 / 30

Which one of the following on treatment with 50% aqueous sodium hydroxide yields the corresponding alcohol and acid?

29 / 30

Oxidising power of chlorine in aqueous solution can be determined by the parameters indicated below:

30 / 30

 

 

 

The product B is

Your score is

The average score is 18%

0%

IIT-JEE MAIN: CHEMISTRY TEST-8

2

TEST SYLLABUS : COMPLETE CHEMISTRY

Your Target is to secure Good Rank in IIT-JEE - 2020

Important Instructions:

(1) There is only one correct option.

(2) Duration of Test is 1 Hour and Questions Paper Contains 30 Questions. The Max. Marks are 120.

(3) Each correct answer carries 4 marks, while 1 mark will be deducted for every wrong answer. Guessing of answer reduces your effort. 

1 / 30

The hydrogen electrode is dipped in a solution of pH = 3 at 25ºC. The potential of the cell would be

2 / 30

AgBr dissolves in Na2S2O3 solution and forms (A). On boiling an aquous solution of (A), a ppt. (B) is obtained. The colour of B is

3 / 30

In the preparation of p-nitro acetanilide from aniline titration is not done by nitrating mixture (a mixture of conc. H2SO4 and conc. HNO3) because

 

4 / 30

Dipole moment is shown by

5 / 30

An alloy of copper, silver and gold is found to have copper constituting the ccp lattice. If silver atoms occupy the edge centres and gold is present at body centre the alloy has a formula

6 / 30

What is the structure of the major product when phenol is treated with bromine water ?

7 / 30

p-Chloroaniline and anilinium hydrochloride can be distinguished by

8 / 30

The rate of a reaction quadruples when the temperature changes from 300 to 310 K. The activation energy of this reaction is : (Assume activation energy and pre-exponential factor are independent of temperature; ln 2 = 0.693; R = 8.314 J mol–1 K–1)

9 / 30

10 / 30

KMnO4 reacts with oxalic acid as : MnO4- + H+  → Mn2+ + CO2 + H2O Hence, 50 ml of 0.04 M KMnO4 is acidic medium is chemically equivalent to

11 / 30

12 / 30

Which of the following is non-aromatic?

13 / 30

Which of the following compounds is most reactive to an aqueous solution of sodium carbonate ?

14 / 30

What is the value of x in the following complex?

Consider the oxidation state of Cobalt in the complex same as that of iron in K3[Fe(CN)6]?

15 / 30

Which of the following does not give effervescences of CO2 with aq. NaHCO3 solution?

16 / 30

Which is the only compound which is deactivating yet ortho-para directing when attached to benzene ring?

17 / 30

50 mL of 0.2 M ammonia solution is treated with 25 mL of 0.2 M HCl. If pKb of ammonia solution is 4.75, the pH of the mixture will be :

18 / 30

For a reaction, A(g) → A(l); ΔH= –3RT. The correct statement for the reaction is :

19 / 30

At 300 K, the density of a certain gaseous molecule at 2 bar is double to that of dinitrogen (N2) at 4 bar. The molar mass of gaseous molecule is :

20 / 30

Which of the following has highest boiling point?

21 / 30

Which of the following will be most reactive towards nucleophillic substitution.

22 / 30

A laboratory reagent imparts green colour to the flame. On heating with solid K2Cr2O7 and conc. H2SO4 it evolves a red gas. Identify the reagent

23 / 30

The relationship between the values of osmotic pressures of solutions obtained by dissolving 6.00 g L–1 of CH3COOH (p1) and 7.45 g L–1 of KCl (π2) is

24 / 30

Ozone reacts with dry iodine to give

25 / 30

If the energy of an electron moving in orbit no. 1 is given by ‘E’, then energy of an electron in orbit no. 2 of Li2+ (z = 3) is given by

26 / 30

In the reaction I+  I-  →  I3-  the Lewis acid is

27 / 30

Match the items in Column I with its main use listed in Column II:

Column I_______ Column II
(A) Silica gel ........(i) Transistor
(B) Silicon ...........(ii) Ion–exchanger
(C) Silicone........ (iii) Drying agent
(D) Silicate .........(iv) Sealant

28 / 30

The amount of arsenic pentasulphide that can be obtained when 35.5 g arsenic acid is treated with excess H2S in the presence of conc. HCl (assuming 100% conversion) is :

29 / 30

Reduction of esters with sodium and alcohol is referred to as

30 / 30

In what manner will increase of pressure effect the following equilibrium?

C(s) + H2O(g) ⇌ CO(g) + H2 (g)

Your score is

The average score is 18%

0%

IIT-JEE MAIN: CHEMISTRY TEST-7

2

TEST SYLLABUS : COMPLETE CHEMISTRY

Your Target is to secure Good Rank in IIT-JEE - 2020

Important Instructions:

(1) There is only one correct option.

(2) Duration of Test is 1 Hour and Questions Paper Contains 30 Questions. The Max. Marks are 120.

(3) Each correct answer carries 4 marks, while 1 mark will be deducted for every wrong answer. Guessing of answer reduces your effort. 

1 / 30

A white sodium salt dissolves readily in water to give a solution which is neutral to litmus. When silver nitrate solution is added to the solution, a white precipitate is obtained which does not dissolve in dil. HNO3. The anion could be

2 / 30

What is the molarity of H2SO4 solution if 25ml is exactly neutralized with 32.63 ml of 0.164 M, NaOH ?

3 / 30

Which of the given sets of temperature and pressure will cause a gas to exhibit the greatest deviation from ideal gas behaviour ?

4 / 30

When ethanal reacts with CH3MgBr and C2H5OH/dry HCl, the product formed are

5 / 30

Moissan boron is

6 / 30

Addition of sodium hydroxide solution to a weak acid (HA) results in a buffer of pH 6. If ionisation constant of HA is 10–5, the ratio of salt to acid concentration in the buffer solution will be :

7 / 30

Which reaction characteristics are changed by the addition of a catalyst to a reaction at constant temperature ?
(i) Activation energy
(ii) Equilibrium constant
(iii) Reaction enthalpy

8 / 30

How many H-atoms are present in 0.046 g of ethanol ?

9 / 30

Which of the following compounds are not arranged in order of decreasing reactivity towards electrophilic substitution?

10 / 30

Which is not true for beryllium ?

11 / 30

The enthalpy change on freezing of 1 mole of water at 5°C to ice at –5°C is : (Given ΔfusH = 6 kJ mol–1 at 0°C, Cp(H2O, l) =75.3 J mol–1 K–1, Cp(H2O, s) = 36.8 J mol–1 K–1)

12 / 30

In  O2, O20 and O22- molecular species, the total number of antibonding electrons respectively are :

13 / 30

In Kjeldahl’s method, nitrogen present in the organic compound is quantitatively converted into

14 / 30

Polyethylene is

15 / 30

With a change in hybridization of the carbon bearing the charge, the stability of a carbanion decreases in the order :

16 / 30

A metal M reacts with N2 to give a compound ‘A’ (M3N). ‘A’ on heating at high temperature gives back ‘M’ and ‘A’ on reacting with H2O gives a gas ‘B’. ‘B’ turns CuSO4 solution blue on passing through it. M and B can be :

17 / 30

Given the molecular formula of the hexacoordinated complexes (i) CoCl3.6NH3, (ii) CoCl3.5NH3, (iii) CoCl3.4NH3 .If the number of co-ordinated NH3 molecules in i, ii and iii respectively are 6, 5, 4, the primary valencies in (i), (ii) and (iii) are :

18 / 30

The electron in the hydrogen atom undergoes transition from higher orbitals to orbital of radius 211.6 pm. This transition is associated with :

19 / 30

An organic amino compound reacts with aqueous nitrous acid at low temperature to produce an oily nitrosoamine. The compound is:

20 / 30

What quantity (in mL) of a 45% acid solution of a mono-protic strong acid must be mixed with a 20% solution of the same acid to produce 800 mL of a 29.875% acid solution?

21 / 30

Extraction of copper by smelting uses silica as an additive to remove :

22 / 30

The reason for “drug induced poisoning” is :

23 / 30

If the solutions of NaCl and NaNO3 are mixed in one beaker and the temperature adjusted to 383° K, the contents of the beaker will most likely:

24 / 30

By what ratio the average velocity of the molecule in gas changes when the temperature is raised from 50 to 200ºC ?

25 / 30

Asthma patient use a mixture of .... for respiration

26 / 30

Ethylene dicholoride and ethylidine chloride are isomeric compounds. The false statement about these isomers is that they :

27 / 30

Excess of NaOH (aq) was added to 100 mL of FeCl3 (aq) resulting into 2.14 g of Fe(OH)3. The molarity of FeCl3 (aq) is : (Given molar mass of Fe=56 g mol–1 and molar mass of Cl=35.5 g mol–1)

28 / 30

Which one of the following is an oxide ?

29 / 30

Which of the following pairs show reverse properties on moving along a period from left to right and from up to down in a group :

30 / 30

An ‘fcc’ in a unit cell of aluminium contains the equivalent of how many atoms ?

Your score is

The average score is 25%

0%

IIT-JEE MAIN: CHEMISTRY TEST-6

2

TEST SYLLABUS : COMPLETE CHEMISTRY

Your Target is to secure Good Rank in IIT-JEE - 2020

Important Instructions:

(1) There is only one correct option.

(2) Duration of Test is 1 Hour and Questions Paper Contains 30 Questions. The Max. Marks are 120.

(3) Each correct answer carries 4 marks, while 1 mark will be deducted for every wrong answer. Guessing of answer reduces your effort. 

1 / 30

The appearance of colour in solid alkali meta halides is generally due to:

2 / 30

Which of the following undergoes hydrolysis by SN1 mechanism :

3 / 30

The process of the extraction of Au and Ag is based on their solubility in

4 / 30

Silver bromide when dissolve in hypo solution gives complex ..... in which oxidation state of silver is ....

5 / 30

Which of the following compounds having
highest and lowest melting point respectively ?
(1) CsF (2) LiF
(3) HCl (4) HF
Correct answer is

6 / 30

The freezing point of a solution, prepared from 1.25 gm of a non-electrolyte and 20 gm of water, is 271.9 K. If molar depression constant is 1.86 K mole–1, then molar mass of the solute will be

7 / 30

One desires to prepare a positively charged sol of silver iodide. This can be achieved by

8 / 30

Which one of the following esters cannot undergo Claisen self-condensation?

9 / 30

is

10 / 30

(i) HCN(aq) + H2O(l) ⇌  H3O+(aq)  + CN –(aq)  Ka = 6.2 × 10–10

(ii) CN(aq)  + H2O(l) ⇌  HCN(aq)   + OH (aq) Kb = 1.6 × 10–5.

These equilibria show the following order of the relative base strength,

11 / 30

Four species are listed below:

i. HCO3ii. H3Oiii. HSO4iv. HSO3F

Which one of the following is the correct sequence of their acid strength?

12 / 30

In recovery of silver from photographic film, you have decided to dissolve the silver ion with dilute nitric acid. Addition of dilute HCl to precipitate AgCl seems to result in unacceptable losses. You might improve recovery by addition of_______ in the latter step.

13 / 30

Consider the reaction: H2SO3(aq) + Sn4+(aq) +H2O(l )→Sn2+(aq)+ HSO4-(aq) +3H+ (aq)

Which of the following statements is correct?

14 / 30

Lassaigne’s test for nitrogen is positive for which compound?

15 / 30

An azeotropic mixture of two liquids boil at a lower temperature than either of them when

16 / 30

Which one of the following substituents at para-position is most effective in stabilizing the phenoxide

17 / 30

Among the following compounds (I-III) the correct order of reactivity with electrophile is

 

18 / 30

In the reaction of KMnO4 with an oxalate in acidic medium, MnO4- is reduced to Mn2+ and  C2O42-    is oxidised to CO2. Hence, 50 mL of 0.02 M KMnO4 is equivalent to

19 / 30

An unknown alochol is treated with the “Lucas reagent” to determine whether the alcohol is primary, secondary or tertiary. Which alcohol reacts fastest and by what mechanism :

20 / 30

Which of the following is true?

21 / 30

In an atom how many orbital(s) will have the quantum numbers; n = 3, l = 2 and ml = + 2 ?

22 / 30

At very high pressures, the compressibility factor of one mole of a gas is given by :

23 / 30

Which of the following statement is wrong ?

24 / 30

The enthalpy of combustion of H2(g), to give H2O(g) is –249 kJ mol–1 and bond enthalpies of H – H and O = O are 433 kJ mol–1 and 492 kJ mol–1 respectively. The bond enthalpy of O – H is

25 / 30

In the reaction,

26 / 30

An organic compound (A) reacts with sodium metal and forms (B). On heating with conc. H2SO4, (A) gives diethyl ether, (A) and (B) are

27 / 30

Which of the following complexes will give white precipitate with BaCl2 (aq)?

28 / 30

The electrode potential of Mg2+/ Mg electrode, in which conc. of Mg2+ is 0.01M, is (E0Mg2+/Mg = -2.36V)

29 / 30

Alkali metals dissolve in liquid NH3 then which of the following observations is not true?

30 / 30

Which of the following species involves sp3 hybridisation?

Your score is

The average score is 32%

0%

IIT-JEE MAIN: CHEMISTRY TEST-5

2

TEST SYLLABUS : COMPLETE CHEMISTRY

Your Target is to secure Good Rank in IIT-JEE - 2020

Important Instructions:

(1) There is only one correct option.

(2) Duration of Test is 1 Hour and Questions Paper Contains 30 Questions. The Max. Marks are 120.

(3) Each correct answer carries 4 marks, while 1 mark will be deducted for every wrong answer. Guessing of answer reduces your effort. 

1 / 30

The rate of SN1 reaction is fastest in the hydrolysis of which of the following halides ?

2 / 30

Statement-1 : Amines are basic in nature.
Statement-2 : Presence of lone pair of electron on nitrogen atom

3 / 30

Copper crystallises in fcc with a unit length of 361pm. What is the radius of copper atom ?

4 / 30

An organic compound ‘X’ on ozonolysis followed by reduction with Zn/H2O gives 2 moles

5 / 30

Given
(A) n = 5, ml = + 1
(B) n = 2, l =1, ml = –1, ms = –l/2
The maximum number of electron(s) in an atom
that can have the quantum numbers as given in
(A) and (B) are respectively:

6 / 30

7 / 30

An ideal gas undergoes isothermal expansion at constant pressure. During the process :

8 / 30

An organic compound A (C4H10O) has two enantiomeric forms and on dehydration it gives B(major product) and C (minor product). B and C are treated with HBr/ Peroxide and the compounds so produced were subjected to alkaline hydrolysis then-

9 / 30

A 1.0 M solution with respect to each of the metal halides AX3 , BX2 , CX3 and DX2 is electrolysed using platinum electrodes. If E°A3+/A  = 1.50 V, E°B2+/B  = 0.3V , E°C3+/C  = – 0. 74 V, E°D2+/D  = – 2.37 V.The correct sequence in which the various metals are deposited at the cathode is

10 / 30

The pair of compounds having metals in their highest oxidation state is:

11 / 30

Concentration of NH4Cl and NH4OH in a buffer solution is in the ratio of 1 : 1, Kb for NH4OH is 10–10. The pH of the buffer is

12 / 30

Which of the following ions are optically active?

13 / 30

Two elements A & B form compounds having molecular formulae AB2 and AB4. When dissolved in 20.0 g of benzene 1.00g of AB2 lowers f.p. by 2.30C whereas 1.00g of AB4 lowers f.p. by 1.30C. The molal depression constant for benzene in 1000g is 5.1. The atomic masses of A and B are

14 / 30

In which reaction, there is change in oxidation number of N

15 / 30

The major product expected from the following reaction is :

16 / 30

A reaction is found to be second order w.r.t. one of the reactants & has rate constant of 0.5 mol–1 dm3 min–1. If initial concentration is 0.2 mol dm–3 then t1/2 of reaction is

17 / 30

The number of π electrons present in 6.4 g of calcium carbide is – (NA = Avagadro’s number)

18 / 30

The correct sequence of decreasing number of π-bonds in the structures of H2SO3, H2SO4 and H2S2Ois :

19 / 30

Potassium permanganate acts as an oxidant in neutral, alkaline as well as acidic media. The final products obtained from it in the three conditions are, respectively

20 / 30

21 / 30

The standard reduction potential of Li+/Li, Ba2+/Ba, Na+/Na and Mg2+/Mg are –3.05, –2.73, –2.71 and –2.37 volts respectively. Which one of the following is strongest oxidising agent?

22 / 30

Aluminothermy used for on the spot welding of large iron structure is based on the fact that-

23 / 30

An element (atomic mass =100 g/mol) having bcc structure has unit cell edge 400pm. The density (in g/cm3) of the element is

24 / 30

A metal gives two chlorides A and B. A gives black precipitate with NH4OH and B gives white. With KI, B gives a red precipitate soluble in excess of KI. A and B are respectively

25 / 30

Consider a 0.1M solution of two solutes A and B. A behaves as a non-electrolyte while 80% of B dimerises. Which of the following statement is correct regarding these solutions?

26 / 30

Among the reactions given below for B2H6, the one which does not take place is

27 / 30

To detect iodine in presence of bromine, the sodium extract is treated with NaNO2 + glacial acetic acid + CCl4. Iodine is detected by the appearance of

28 / 30

Which of the following shows the tendency to form peroxide?

29 / 30

In which of the following arrangements, the sequence is not strictly according to the property written against it?

30 / 30

Allyl phenyl ether can be prepared by heating:

Your score is

The average score is 28%

0%

IIT-JEE MAIN: CHEMISTRY TEST-4

2

TEST SYLLABUS : COMPLETE CHEMISTRY

Your Target is to secure Good Rank in IIT-JEE - 2020

Important Instructions:

(1) There is only one correct option.

(2) Duration of Test is 1 Hour and Questions Paper Contains 30 Questions. The Max. Marks are 120.

(3) Each correct answer carries 4 marks, while 1 mark will be deducted for every wrong answer. Guessing of answer reduces your effort. 

1 / 30

If the following half cells have E° values as

A3+ + e → A2+, E° = y2V

A2+ + 2e → A, E° = –y1V

The E° of the half cell A3+ + 3e → A will be

2 / 30

Which of the following structures does not contain any chiral C atom but represent the chirality in the structure.

3 / 30

Reduction with aluminium isopropoxide in excess of isopropyl alcohol is called Meerwein Ponndorff-Verley reduction (MPV). What will be the final product when cyclohex-2-enone is selectively reduced in MPV reaction ?

4 / 30

van der Waal’s equation for a gas is stated as, P = nRT/(V-nb) - a(n/V)2 This equation reduces to the perfect gas equation, P = nRT/V When,

5 / 30

A reaction rate constant is given by K = 1.2 x 1010 e-2500/RT . It means

6 / 30

Which reaction will not yield an amide?

7 / 30

Removal of Fe, Cu, W from Sn metal after smelting is by ............... because .............

8 / 30

9 / 30

Among  KO2 ,AlO2- ,BaO2 and NO2+ ,unpaired electron is present in

10 / 30

How many different dipeptides can be formed by two different amino acids ?

11 / 30

N2 and O2 are converted to mono cations N2+ and O2+ respectively, which of the following is wrong?

12 / 30

The vapour pressure of benzene at a certain temperature is 640 mm of Hg. A non volatile and non electrolyte solid weighing 2.175 g is added to 39.08 g of benzene. If the vapour pressure of the solution is 600mm of Hg, what is the molecular weight of solid substance?

13 / 30

When CO2 dissolves in water, the following equilibrium is established CO2 + 2H2O ⇌ H3O+ + HCO3- for which the equilibrium constant is 3.8 x 10–6 and pH = 6.0. What would be the ratio of concentration of bicarbonate ion to carbon dioxide?

14 / 30

A crystal of ZnO is heated evolve O2 and forms defect; the type of defects formed will be

15 / 30

If a 0.1 M solution of glucose (Mol. wt 180) and 0.1 molar solution of urea (Mol. wt. 60) are placed on two sided semipermeable membrane to equal heights, then it will be correct to say that

16 / 30

Which reagent can be used to identify nickel ion?

 

17 / 30

Given
(A) n = 5, ml = + 1
(B) n = 2, l =1, ml = –1, ms = –l/2
The maximum number of electron(s) in an atom that can have the quantum numbers as given in (A) and (B) are respectively:

18 / 30

Dinitrogen and dioxygen are main constituents of air but these do not react with each other to form oxides of nitrogen because __________.

19 / 30

If s0, s1, s2 and s3 are the solubilities of AgCl in water, 0.01 M CaCl2, 0.01 M NaCl and 0.05 M AgNO3 solutions, respectively, then

20 / 30

Which of the following compounds exhibit tautomerism?

21 / 30

If m and e are the mass and charge of the revolving electron in the orbit of radius r for hydrogen atom, the total energy of the revolving electron will be:

22 / 30

When tert-butyl chloride is made to react with sodium methoxide, the major product is

23 / 30

In the form of dichromate, Cr (VI) is a strong oxidising agent in acidic medium but Mo (VI) in MoO3 and W (VI) in WO3 are not because____________ .

(i) Cr (VI) is more stable than Mo(VI) and W (VI).
(ii) Mo (VI) and W(VI) are more stable than Cr(VI).
(iii) Higher oxidation states of heavier members of group-6 of transition series are more stable.
(iv) Lower oxidation states of heavier members of group-6 of transition series are more stable.

24 / 30

Point out the incorrect statment among the following :

25 / 30

When pink [Co(H2O)6]2+ is dehydrated the colour changes to blue. The correct explanation for the change is :

26 / 30

In a set of reactions p-nitrotoluene yielded a product E.

The product E would be:

27 / 30

The reaction in which hydrogen peroxide acts as a reducing agent is

28 / 30

The correct statement among the following is :

29 / 30

‘a’ gm of element A reacts with ‘b’ gm of element B. Also ‘b’ gm of element B combines with 2c gm of C. If one gm equivalent of B weighs ‘b’ gm. Then the mass ratio in which A and C combine is

30 / 30

An organic compound is treated with NaNO2 and dil. HCl at 0°C. The resulting solution is added to an alkaline solution of b -naphthol where by a brilliant red dye is produced. It shows the presence of

Your score is

The average score is 28%

0%

IIT-JEE MAIN: CHEMISTRY TEST-3

2

TEST SYLLABUS : COMPLETE CHEMISTRY

Your Target is to secure Good Rank in IIT-JEE - 2020

Important Instructions:

(1) There is only one correct option.

(2) Duration of Test is 1 Hour and Questions Paper Contains 30 Questions. The Max. Marks are 120.

(3) Each correct answer carries 4 marks, while 1 mark will be deducted for every wrong answer. Guessing of answer reduces your effort. 

1 / 30

Precautions to be taken in the study of reaction rate for the reaction between potassium iodate (KIO3) and sodium sulphite (Na2SO3) using starch solution as indicator at different concentrations and temperature –

2 / 30

Which one of the following is the correct statement?

3 / 30

Match List I with List II and select the correct answer :

4 / 30

How many pairs of enantiomers are possible for following complex compound. [M (AB) (CD) ef](where AB, CD– Unsymmetrical bidentate ligand, e, f–Monodentate ligands)

5 / 30

Me – CH = CH2 + CHCl3  (aq.KOH excess, Δ)→ A (Major products) is –

6 / 30

Number of α-H in alkene which is major product in this reaction is –

7 / 30

In the given molecule choose the correct order of their angle.

8 / 30

End product (B) of above reaction is –

9 / 30

Which statement is incorrect regarding thermite process –

10 / 30

This question contains Statement-1 and Statement-2. Of the four choices given after the statements, choose the one that best describes the two statements.

Statement 1 : [HeH]+ is more stable as compared to H2+.

Statement 2 : Both the above species are having equal bond order.

11 / 30

NH4ClO4 + HNO3 (dilute) →X + HClO4

X→Y (gas) Gas (Y) is –

12 / 30

pH of a saturated solution of silver salt of monobasic acid HA is found to be 9. Find the Ksp of sparingly soluble salt Ag A (s). Given Ka (HA) = 10–10.

13 / 30

The instantaneous rate of disappearance of MnO4 ion in the following reaction is 4.56 × 10–3 Ms–1

2MnO4– + 10I + 16H+ → 2Mn2+ + 5I2 + 8H2O

The rate of appearance I2 is :

14 / 30

For the reaction takes place at certain temperature NH4HS ⇌ NH3 (g) + H2S (g), if equilibrium pressure is X bar, then ΔG° would be –

15 / 30

Which of the following is/are formed when ozone reacts with the unburnt hydrocarbons in polluted air ?

(i) Formaldehyde (ii) Acrolein
(iii) Peroxyacetyl nitrate (iv) Formic acid

16 / 30

Which of the following xenon-oxo compounds may not be obtained by hydrolysis of xenon fluorides?

17 / 30

Amongst the following alcohols which would react fastest with conc. HCl and ZnCl2 ?

18 / 30

The conductivity of a saturated solution of Ag3POis 9 × 10–6 Sm–1 and its equivalent conductivity is 1.50 × 10–4 Sm2 equivalent–1. The Ksp of Ag3PO4 is –

19 / 30

At 675K, H2(g) and CO2(g) react to form CO(g) and H2O (g), Kp for the reaction is 0.16. If a mixture of 0.25 mole of H2(g) and 0.25 mol of CO2 is heated at 675K, mole % of CO(g) in equilibrium mixture is –

20 / 30

For the extraction of Pb when impurity content is very high, then during roasting of galena, the formation of which compound (s) is/are prevented by lime –

21 / 30

Structure of some important polymers are given. Which one represents Buna-S?

22 / 30

Calculate the millimoles of SeO32– in solution on the basis of following data :

70 ml of M/60 solution of KBrO3 was added to SeO32– solution. The bromine evolved was removed by boiling and excess of KBrO3 was back titrated with 12.5 mL of M/25 solution of NaAsO2.

The reactions are given below.

(1) SeO32- +  BrO3- +  H+ → SeO42- + Br2 + H2O

(2) BrO3+  AsO2- + H2O +Br- +  AsO43- +  H+

23 / 30

What would be the reduction potential of an electrode at 298 K, which originally contained 1M K2Cr2Osolution in acidic buffer solution of pH = 1.0 and which was treated with 50% of the Sn necessary to reduce all Cr2O72– to Cr3+. Assume pH of solution remains constant. Given : E0Cr2O72- /Cr3+ ,H+  = 1.33 V, log2 = 0.3, 2.303RT/F = 0.06

24 / 30

Aqueous solution of (M) + (NH4)2S → yellow ppt (B)+(NH4)2S2 → insoluble.

25 / 30

Choose the correct option for

26 / 30

Let n1 be the frequency of the series limit of the Lyman series, n2 be the frequency of the first line of the Lyman series, and n3 be the frequency of the series limit of the Balmer series, then –

27 / 30

1 mole of gas X is present in a closed adiabatic vessel fitted with a movable frictionless piston. The initial temperature of gas X is 300 K. The vessel is maintained at constant pressure of 1 atm. Keeping the pressure constant at 1atm the reaction (3X (g) → 2Y(g) ; DH = –30 kJ/mol) is started with the help of negligible amount of electric energy. If finally 75 mole % of X undergone reaction at constant pressure of 1 atm, find the final temperature (in K) of reaction vessel. Given : Cp,m (X) = 40 J/K mole, Cp,m(Y) = 30 J/K mole.

28 / 30

The variation of concentration of A with time in two experiments starting with two different initial concentration of A is given in the following graph. The reaction is represented as A (aq)→ B (aq). What is the rate of reaction (M/min) when concentration of A in aqueous solution was 1.8 M ?

29 / 30

Which of the following carbide does not release any hydrocarbon on reaction with water.

30 / 30

Which of the following option is having maximum number of unpaired electrons –

Your score is

The average score is 28%

0%