1. A
   1, 0
2. B
   0, 1
3. C
   1, 2
4. D
   2, 1

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1. A
   Statement I is correct but Statement II is incorrect
2. B
   Statement I is incorrect but Statement II is correct
3. C
   Both Statement I and Statement II are correct
4. D
   Both Statement I and Statement II are incorrect

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1. A
   Acidic potassium permanganate solution
2. B
   Acidic potassium dichromate solution
3. C
   Cold, dilute, aqueous solution of potassium permanganate
4. D
   Hot, concentrated solution of potassium permanganate

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1. A
   $CCl_4$
2. B
   HI
3. C
   $CO_2$
4. D
   $BF_3$

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1. A
   (structure 1)
2. B
   (structure 2)
3. C
   (structure 3)
4. D
   (structure 4)

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1. A
   Phenolphthalein, pink to yellow
2. B
   Alkaline $KMnO_4$, colourless to pink
3. C
   Phenolphthalein, colourless to pink
4. D
   Methyl orange, yellow to pinkish red colour

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1. A
   A-III, B-I, C-IV, D-II
2. B
   A-I, B-IV, C-III, D-II
3. C
   A-II, B-IV, C-I, D-III
4. D
   A-III, B-IV, C-I, D-II

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1. A
   Rusting of iron object
2. B
   Production of hydrogen by electrolysis of water
3. C
   Tarnishing of silver
4. D
   Development of green coating on copper and bronze ornaments

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1. A
   C and D only
2. B
   A and D only
3. C
   A and B only
4. D
   B and C only

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1. A
   $K_1^2 = 2K_2$
2. B
   $K_2 = \dfrac{K_1}{2}$
3. C
   $K_1 = \dfrac{1}{\sqrt{K_2}}$
4. D
   $K_2 = \dfrac{1}{\sqrt{K_1}}$

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1. A
   $NaCl < CH_3CN < CH_3OH < Cyclohexane$
2. B
   $CH_3OH < CH_3CN < NaCl < Cyclohexane$
3. C
   $NaCl < CH_3OH < CH_3CN < Cyclohexane$
4. D
   $Cyclohexane < CH_3CN < CH_3OH < NaCl$

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1. A
   $PCl_5$ possesses two different Cl – P – Cl bond angles
2. B
   All five P – Cl bonds are identical in length
3. C
   $PCl_5$ exhibits $sp^3d$ hybridisation
4. D
   $PCl_5$ consists of five P – Cl (sigma) bonds

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1. A
   Both the heat and work done will be greater than zero
2. B
   Heat absorbed will be less than zero and work done will be positive
3. C
   Work done will be zero and heat will also be zero
4. D
   Work done will be greater than zero and heat will remain zero

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1. A
   4-ethyl-1-fluoro-2-nitrobenzene
2. B
   4-ethyl-1-fluoro-6-nitrobenzene
3. C
   3-ethyl-6-fluoro-1-nitrobenzene
4. D
   1-ethyl-4-fluoro-3-nitrobenzene

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1. A
   $Ce^{4+}$ and $Tb^{4+}$
2. B
   $La^{3+}$ and $Lu^{3+}$
3. C
   $Eu^{2+}$ and $Yb^{2+}$
4. D
   $Eu^{2+}$ and $Tb^{4+}$

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1. A
   $CH_3COCl \xrightarrow{H_2O,\ \Delta} CH_3COOH$
2. B
   Benzamide ($C_6H_5CONH_2$) $\xrightarrow{(i)\ LiAlH_4\ (ii)\ H_2O}$ benzoic acid ($C_6H_5COOH$) [structure]
3. C
   $CH_3CH_2OH \xrightarrow{(i)\ KMnO_4/OH^-\ (ii)\ H_3O^+} CH_3COOH$
4. D
   $CH_3CH_2CH_2OH \xrightarrow{CrO_3-H_2SO_4} CH_3CH_2COOH$

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1. A
   Broad and f orbitals
2. B
   Narrow and f orbitals
3. C
   Broad and d and f orbitals
4. D
   Narrow and d and f orbitals

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1. A
   hexadentate ligand
2. B
   ambidentate ligand
3. C
   monodentate ligand
4. D
   bidentate ligand

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1. A
   2.25 g
2. B
   4.5 g
3. C
   0.44 g
4. D
   1.125 g

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1. A
   The acidic strength of HX (X = F, Cl, Br and I) follows the order : HF > HCl > HBr > HI.
2. B
   Fluorine exhibits –1 oxidation state whereas other halogens exhibit +1, +3, +5 and +7 oxidation states also.
3. C
   The enthalpy of dissociation of $F_2$ is smaller than that of $Cl_2$.
4. D
   Fluorine is stronger oxidising agent than chlorine.

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1. A
   use of catalyst
2. B
   decreasing concentration of $N_2$
3. C
   low pressure, high temperature and high concentration of ammonia
4. D
   high pressure, low temperature and higher concentration of $H_2$

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1. A
   $CH_3CHO$ (acetaldehyde)
2. B
   $CH_3CONH_2$ (acetamide)
3. C
   $CH_3CH_2OH$
4. D
   $CH_3CH_2Cl$

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1. A
   A-I, B-II, C-IV, D-III
2. B
   A-I, B-IV, C-III, D-II
3. C
   A-I, B-IV, C-II, D-III
4. D
   A-IV, B-I, C-II, D-III

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1. A
   $C_2O_4^{2-}$
2. B
   $SCN^-$
3. C
   $NO_2^-$
4. D
   $CN^-$

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1. A
   IV > II > III > I
2. B
   I > III > II > IV
3. C
   III > I > II > IV
4. D
   I > II > III > IV

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