CHEMISTRY 2022

Q.1 Among the following statements, choose the correct statements.

(A) In Ionic solid, ions are the constituent particles.

(B) Ionic solids are soft.

(C) Ionic solid are electrical insulators in the solid state.

(D) Ionic solid conduct electricity in molten state.

(E) Tonic solid have low melting and boiling points.

Choose the correct answer from the options given below:

(A) A, C & D only

(B) A, D & E only

(C) A, B & C only

(D) A, C &E only

ANS A

Q.2 Atoms of element B form hep lattice and those of the element A occupy 2/3rd of tetrahedral voids. What is the formula of the compound formed by the elements A and B?

(A) A₃ B₄

(B) A₄ B₃

(C) A₂ B₃

(D) A₃ B₂

ANS B

Q.3 Consider the 1M aqueous solution of the following compounds and arrange them in the increasing order of elevation in the boiling points.

(A) C₆ H₁₂ O₆

(B) NaCl

(C) MgCl₂

(D) Al₂ (SO₄)₃

(E) A l₂ (SO₄)₃

Choose the correct answer from the options given below:

(A) B<C<D<E<A

(B) A<E<D<C<B

(C) A<B<C<D<E

(D) E<D<C<B<A 

ANS C

Q.4 Calculate the molarity of a solution containing 5g of NaOH in 450 mL solution

(A) 0.278X10^-3

(B) 0.278

(C) 0.278X10^-3M

(D) 0.278M

ANS D

Q.5 Among the following statements related to ionic conductance, choose the correct statements.

(A) Tonic conductance depends on the nature of electrolyte.

(B) Ionic conductance is due to the movements of electrons

(C) Ionic conductance is also called electronic conductance

(D) Ionic conductance depends on temperature

(E) Ionic conductance also depends on the nature of solvent

Choose the correct answer from the options given below:

(A) A, B and C only

(B) B, C and D only

(C) B, C and E only

(D) A, D and E only

ANS D

Q.6 A degree m NaCL, HCl and NaOAc are 126.4, 425.9 and 91.0 S em² mol ^-1 respectively. Calculate A° for HOAc

(A) 390.5 S cm² mol^-1

(B) 643.3 S em² mol^-1

(C) 461.3 S cm² mol^-1

(D) 208.5 S em² mol^-1

ANS A

Q.7 How much charge is required for the reduction of 1 mol of MnO₄^-; to Mn²⁺?

(A) 1F

(B) 5E

(C) 3R

(D) 6F

ANS B

Q.8 The products formed at cathode and anode by electrolysis of aqueous NaCl solution respectively are

(A) Na, Cl₂

(B) Na, O₂

(C) H₂ Cl₂

(D) H₂ Cl₂

ANS C

Q.9 The artificial sweetner used only for cold food is

(A) Alitame

(B) Sucralose

(C) Aspartame

(D) Saccharin

ANS C

Q.10 Rate constant ‘k’ for a certain reaction is k=2.3x10^-5

L mol^-1₂^-1Order of the reaction is:

(A) 0

(B) 1

(C) 2

(D) 3

ANS C

Q.11 The decomposition of NH₃ on platinum surface is zero order reaction. If k=2.5 x10^-4 mol L^-1_s^-1 the rate of production of H₂ is

(A) 2.5x107^-4 mol L^-1_s^-1

(B) 7.5x107* mol L^-1_s^-1

(C) 5.0x10^-4 mol L^-1_s^-1

(D) 10.0x107 mol L^-1_s^-1

ANS B

Q.12 The molecularity of the following elementary reaction is

NH₄NO_{2  →} N₂+2H₂O

(A) Zero

(B) One

(C) Two

ANS B

Q.13 Which of the following is not the characteristic of physisorption?

(A) It arises because of vander Waals forces.

(B)  It is not specific in nature.

(C) Enthalpy of adsorption is high.

(D) It results into multi molecular layers on adsorbent surface under high pressure.

ANS C

Q.14 Which one of the following is an emulsion?

(A) Smoke

(B) Hair cream

(C) Paint

ANS A

Q.15 Caprolactam is the starting material for

(A) Nylon 6.6

(B0 Nylon 6

(C) Nylon 2.6

(D) Dacron

ANS B

Q.16 Which of the following is a positively charged Sol?

(A) Starch

(B) Gum

(C) Gold Sol

(D) Blood

ANS D

Q.17 Match list I with list II

Choose the correct answer from the options given below:

(A) (A)-I, (B)-II, (C)-III, (D)-IV

(B) (A)-II, (B)-III, (C)-IV, (D)-I

(C) (A)-IV, (B)-III, (C)-II, (D)-I

(D) (A)-III, (B)-II, (C)-IV, (D)-I

ANS B

Q18 The metal refined by Van Arkel method is

(A) Ni

(B) Zr

(C) Cu

(D) Sn

ANS B

Q.19 Arrange the following hydrides in increasing order of thermal stability.

(A) H₂O

(B) H₂Se

(C) H₂Po

(D) H₂Te

(E) H₂S

Choose the correct answer from the options given below:

(A) A<B<C<D<E

(B) C<D<B<E<E

(C) C<D<E<B<A

ANS B

Q.20 Match list I with list II

Choose the correct answer from the options given below:

(A) (A)-IV, (B)-III, (C)-II, (D)-I

(B) (A)-IV, (B)-I, (C)-II, (D)-III

(C) (A)-IV, (B)-III, (C)-I, (D)-II

(D) (A)-Iv, (B)-I, (C)-III, (D)-II

ANS C

Q.21 The formula of a noble gas species which is isostructural with BrO₃^-

(A) XeOF₄

(B) XeF₂

(C) XeO₃

ANS C

Q.22 Match list I with list II

Choose the correct answer from the options given below:

(A) (A)-II, (B)-III, (C)-I, (D)-IV

(B) (A)-I, (B)-II, (C)-III, (D)-IV

(C) (A)-III, (B)-I, (C)-II, (D)-IV

(D) (A)-II, (B)-I, (C)-III, (D)-IV

ANS A

Q.23 The metal from first transition series having positive E M²⁺_M value:

(A) Cr

(B) V

(C) Cu

(D) Ni

ANS C

Q.24 Magnetic moment of a divalent ion in aqueous solution of an element with atomic number 25 is:

(A) 2.84 BM

(B) 3.87BM

(C) 4.90 BM

ANS D

Q.25 ‘Which one of the following transition metal ion is colourless?

(A) Sc³⁺

(B) V²⁺

(C) Mn²⁺

ANS A

Q.26 Among the following statements, choose the correct statements.

(A) SN reaction proceeds with stereo chemical inversion.

(B) The process of conversion of Racemic mixture into enantiomer is known as Racemisation

(C) A mixture containing 2 enantiomers in equal proportions is known as Racemic mixture.

(D) The stereoisomers related to each other as superimposable mirror image are called enantiomers.

(E) The objects which are non- superimposable on their mirror image are said to be chiral and this properly is known as chirality.

Choose the correct answer from the options given below:

(A) B and C only

(B)  A, C and E only

(C) B, C and E only

ANS B

Q.27 TUPAC name of neopentyl chloride is

1- Chloro — 2, 2 — dimethylpropane

2 - Chloro — 2, 2 — dimethylpropane

2 - Chloro — 2 – Methylbutane

ANS A

Q.28 The structure of major monohalo product in the following reaction is ……………..

(A) 

ANS C

Q.29 Among the following statements, choose the correct statements.

(A) Boiling point of alcohols increases with increase in the number of carbon atoms.

(B) In alcohols, boiling points increases with increase of branching in carbon chain.

(C) Boiling points of alcohols are lesser in comparison to haloalkanes of comparable molecular mass.

(D) Boiling points of alcohols are higher in comparison to hydrocarbons of comparable molecular mass.

(E) The high boiling points of alcohols are mainly due to the presence of intramolecular hydrogen bonding.

Choose the correct answer from the options given below:

(A) A, D and E only

(B) A, B and C only

(C) B, C and D only

(D) C, D and E only

ANS A

Q.30 Arrange the following compounds in increasing order of their acid strength:

(A) Propan-1- o 1

(B) 3-nitrophenol

(C) 3. 5-dinitrophenol

(D) Phenol

(E) 4-Methylphenol

Choose the correct answer from the options given below:

(A) A<B<C<D<E

(B) C<B<D,E<A

(C) A<B<C<D<A

(D) A<E<D<B<C

ANS D

Q.31 The structure of the product of the following reaction is:

(A) 

(B) 

(C)

(D)   

ANS B

Q.32 The product of the following   is

(A)  

(B) 

(C) 

(D) 

ANS A

Q.33 Amino acid in zwitter ionic form show

(A) Acid Behaviour

(B) Basic Behaviour

(C) Amphoteric Behaviour

ANS C

Q.34 Match list I with list II

List I (Nomenclature)	List IT (Sturucture)
A. Acetophenone
B. Benzaldehyde
C. Benzoic acid
D. Benzophenone

Choose the correct answer from the options given below:

(A) (A)-III, (B)-I, (C)-II, (D)-IV

(B) (A)-II, (B)-I, (C)-IV, (D)-III

(C) (A)-I, (B)-II, (C)-III, (D)-IV

(D) (A)-IV, (B)-III, (C)-II, (D)-I

ANS B

Q.35 Which simple chemical test is used to distinguish between ethanal & propanal?

(A) Todoform test

(B) Tollen’s test

(C) Fehling’s test

(D) Lucas test

ANS A

Q.36 ‘Which of the following compound would undergo Aldol condensation?

(A) Methanal

(B) Benzaldehyde

(C) 2, 2- Dimethylbutanal

ANS D

Q.37 Among the following statements choose the correct statements

(A) Analgesics reduce or abolish pain without causing impairment of consciousness, mental confusion.

(B) Tranquilizers are neurological inactive drugs.

(C) Morphine is the example of non- narcotic analgesics.

(D) Disinfectants are applied to inanimate objects whereas antiseptics are applied to the living tissues.

(E) Same substance can act as an antiseptic as well as disinfectant by varying the concentration.

Choose the correct answer from the options given below:

(A) A, D and E only

(B) B, C and D only

(C) A, C and E only

ANS A

Q.38 Out of the following artificial sweetning agents, which one has highest sweetness value in comparison to cane sugar?

(A) Saccharin

(B) Alitame

(C) Sucralose

ANS B

Q.39 Among the following polymers, which one is the copolymer?

(A) Polypropene

(B) Polystyrene

(C) Polyvinyl chloride

(D) Glyptal

ANS B

Q.40 Among the following, which one is a disaccharide?

(A) Glucose

(B) Glycogen

(C) Maltose

ANS C

Q.41 The reaction of amines with mineral acids to form ammonium salt shows that these are basic in nature. Amines have an unshared pair of electron on nitrogen atom due to which they behave as lewis base. Basicity of amines is related to their structure. Basic character of an amine depends upon the ease of formation of cation by accepting a proton from the acid. The more stable the cation is relative to the amine, more basic is the amine.

Structure of ammonium salt when ethylamine reacts with one mole of HCI?:

(A) C₂H₅ - NH⁺₃ Cl^-

(B) (C₂H₅)₂- NH⁺₂ Cl^-

(C) (C₂H₅)3-NH⁺ Cl^-

(D) (C₂H₅)₄- N⁺ Cl^-

ANS A

Q.42 The reaction of amines with mineral acids to form ammonium salt shows that these are basic in nature. Amines have an unshared pair of electron on nitrogen atom due to which they behave as lewis base. Basicity of amines is related to their structure. Basic character of an amine depends upon the ease of formation of cation by accepting a proton from the acid. The more stable the cation is relative to the amine, more basic is the amine.

Among the following amines, which one is most basic (in aqueous solution)?

(A) NH₃

(B) C₂H₅NH₂

(C) (C₂H₅)₂NH

ANS C

Q.43 The reaction of amines with mineral acids to form ammonium salt shows that these are basic in nature. Amines have an unshared pair of electron on nitrogen atom due to which they behave as lewis base. Basicity of amines is related to their structure. Basic character of an amine depends upon the ease of formation of cation by accepting a proton from the acid. The more stable the cation is relative to the amine, more basic is the amine.

The correct order of basicity of amines in gas phase

(A) 1degree < 3 degree < 2 degree

(B) 3 degree < 1 degree < 2 degree

(C) 2 degree < 3 degree < 1 degree

(D) 1 degree < 2 degree  < 3 degree

ANS D

Q.44 The reaction of amines with mineral acids to form ammonium salt shows that these are basic in nature. Amines have an unshared pair of electron on nitrogen atom due to which they behave as lewis base. Basicity of amines is related to their structure. Basic character of an amine depends upon the ease of formation of cation by accepting a proton from the acid. The more stable the cation is relative to the amine, more basic is the amine.

Among the following, which one has the highest pK₆, value?

(A) C₂H₅NH₂

(B) C₆H₅NHCH₃

(C) (C₂H₅)₂NH

(D) (C₂H₅)₃N

ANS B

Q.45 The reaction of amines with mineral acids to form ammonium salt shows that these are basic in nature. Amines have an unshared pair of electron on nitrogen atom due to which they behave as lewis base. Basicity of amines is related to their structure. Basic character of an amine depends upon the ease of formation of cation by accepting a proton from the acid. The more stable the cation is relative to the amine, more basic is the amine.

The correct order of basicity of amines in gas phase

 (A) C₂H₅NH₂

(B) C₆H₅N(CH₃)₂

(C) (C₂H₅)₂NH

ANS C

Q.46 According to the valence bond theory, the metal atom or ion under the influence of ligands can use its (n-1) d, ns, np, nd orbitals for hybridisation to yield a set of equivalent orbitals of definite geometry. These hybridised orbitals are allowed to Passage: overlap with ligand orbitals that can donate electron pairs for bonding. It is usually possible to predict the geometry of a complex from the knowledge of its magnetic behaviour on the basis of the valence bond theory. Consider the formation of [Co (NH₃)₅Cl] Cl₂ answer the following question:

The IUPAC name of the above coordination entity is

(A) Chloridopentaamminecobaltate (II) chloride

(B) Chloridopentaamminecobaltate (II) dichloride

(C) Pentaamminechloridocobaltate (IIT) chloride

ANS D

Q.47 According to the valence bond theory, the metal atom or ion under the influence of ligands can use its (n-1) d, ns, np, nd orbitals for hybridisation to yield a set of equivalent orbitals of definite geometry. These hybridised orbitals are allowed to Passage: overlap with ligand orbitals that can donate electron pairs for bonding. It is usually possible to predict the geometry of a complex from the knowledge of its magnetic behaviour on the basis of the valence bond theory. Consider the formation of [Co (NH₃)₅Cl] Cl₂ answer the following question:

The spin only magnetic moment of the complex [Co(NH₃)₅C l] Cl₂ in BM is

(A) 1.7

(B) 0.0

(C) 3.8

(D) 4.9

ANS B

Q.48  According to the valence bond theory, the metal atom or ion under the influence of ligands can use its (n-1) d, ns, np, nd orbitals for hybridisation to yield a set of equivalent orbitals of definite geometry. These hybridised orbitals are allowed to Passage: overlap with ligand orbitals that can donate electron pairs for bonding. It is usually possible to predict the geometry of a complex from the knowledge of its magnetic behaviour on the basis of the valence bond theory. Consider the formation of [Co (NH₃)₅Cl] Cl₂ answer the following question:

The hybridization of cobalt in the above coordination entity is

(A) sp³d²

(B) d²sp³

(C) sp²d

ANS B

Q.49 According to the valence bond theory, the metal atom or ion under the influence of ligands can use its (n-1) d, ns, np, nd orbitals for hybridisation to yield a set of equivalent orbitals of definite geometry. These hybridised orbitals are allowed to Passage: overlap with ligand orbitals that can donate electron pairs for bonding. It is usually possible to predict the geometry of a complex from the knowledge of its magnetic behaviour on the basis of the valence bond theory. Consider the formation of [Co (NH₃)₅Cl] Cl₂ answer the following question:

The coordination number of cobalt in the above coordination entity is

(A) 2

(B) 4

(C) 5

(D) 6

ANS D

Q.50 According to the valence bond theory, the metal atom or ion under the influence of ligands can use its (n-1) d, ns, np, nd orbitals for hybridisation to yield a set of equivalent orbitals of definite geometry. These hybridised orbitals are allowed to Passage: overlap with ligand orbitals that can donate electron pairs for bonding. It is usually possible to predict the geometry of a complex from the knowledge of its magnetic behaviour on the basis of the valence bond theory. Consider the formation of [Co (NH₃)₅Cl] Cl₂ answer the following question:

The primary valence of Co in above coordination entity is

(A) 1

(B) 2

(C) 3

ANS C