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

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1. A
   $\left\lbrack {LC}^{- 1} \right\rbrack$
2. B
   $\left\lbrack M^{0}L^{0}T^{0} \right\rbrack$
3. C
   $\left\lbrack MLT^{0} \right\rbrack$
4. D
   $\left\lbrack MLT^{- 1} \right\rbrack$

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1. A
   Both statement I and statement II are true
2. B
   Both statement I and statement II are false
3. C
   Statement I is false but statement II is true
4. D
   Statement I is true but statement II is false

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

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1. A
   $F_{2} > {Cl}_{2} > {Br}_{2} > I_{2}$
2. B
   ${Cl}_{2} > F_{2} > {Br}_{2} > I_{2}$
3. C
   ${Cl}_{2} > {Br}_{2} > F_{2} > I_{2}$
4. D
   $I_{2} > {Br}_{2} > {Cl}_{2} > F_{2}$

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1. A
   These sols are reversible in nature
2. B
   The sols cannot be easily coagulated
3. C
   They do not require electrolytes for stability.
4. D
   Their viscosity is of the order of that of $H_{2}O$

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1. A
   $C_{3}H_{8}$
2. B
   $C$
3. C
   ${CH}_{4}$
4. D
   ${CO}_{2}$

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

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1. A
   (ii) $>$ (i) $>$ (iii) $>$ (iv)
2. B
   (iii) $>$ (iv) $>$ (ii) $>$ (i)
3. C
   (ii) $>$ (iii) $>$ (i) $>$ (iv)
4. D
   (i) $>$ (iii) $>$ (iv) $>$ (ii)

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

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1. A
   ${CH}_{3}COCl/{AlCl}_{3},{Br}_{2}/{AlBr}_{3},{HNO}_{3}/H_{2}{SO}_{4},Zn/HCl$
2. B
   ${CH}_{3}COCl/{AlCl}_{3},Zn - Hg/HCl,{Br}_{2}/{AlBr}_{3},{HNO}_{3}/H_{2}{SO}_{4}$
3. C
   ${Br}_{2}/{AlBr}_{3},{CH}_{3}COCl/{AlCl}_{3},{HNO}_{3}/H_{2}{SO}_{4},Zn/HCl$
4. D
   ${HNO}_{3}/H_{2}{SO}_{4},{Br}_{2}/{AlCl}_{3},{CH}_{3}COCl/{AlCl}_{3},Zn - Hg/HCl$

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1. A
   $Cu,Zn$ and $Ag$
2. B
   Ge, Cu and Ag
3. C
   Zn, Ni and Ag
4. D
   $Cu,Zn$ and $Ni$

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1. A
   van Arkel method
2. B
   vapour phase refining
3. C
   zone refining
4. D
   Liquation

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

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

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

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1. A
   ${XeF}_{4}$
2. B
   ${SiF}_{4}$
3. C
   $BF_{4}^{-}$
4. D
   ${SF}_{4}$

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1. A
   Both statement I and statement II are false
2. B
   Statement I is true but statement II is false
3. C
   Both statement I and statement II are true
4. D
   Statement I is false but statement II is true

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1. A
   Reaction is possible and compound (A) will be major product.
2. B
   The reaction will form sulphonated product instead of nitration.
3. C
   $- {NH}_{2}$ group is ortho and para directive, so product (B) is not possible.
4. D
   Reaction is possible and compound (B) will be the major product.

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1. A
   Nitric acid
2. B
   Sodium hydroxide
3. C
   Hydrochloric acid
4. D
   Ammonia

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1. A
   Statement I is false but Statement II is true
2. B
   Both statement I and statement II are true
3. C
   Both statement I and statement II are false
4. D
   Statement I is true but statement II is false

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1. A
   $1.11 \times 10^{- 6}$
2. B
   $1.77 \times 10^{- 6}$
3. C
   $1.77 \times 10^{- 2}$
4. D
   $1.11 \times 10^{- 2}$

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1. A
   $\sqrt{\frac{2}{5}}$
2. B
   $\sqrt{\frac{2}{3}}$
3. C
   $\sqrt{\frac{2}{11}}$
4. D
   $\sqrt{\frac{2}{7}}$

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1. A
   If you will not earn money, you will not work
2. B
   You will earn money, if you will not work
3. C
   If you will earn money, you will work
4. D
   To earn money, you need to work

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1. A
   7
2. B
   -3
3. C
   3
4. D
   -7

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