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1. A
   +4
2. B
   +5
3. C
   +4, +5
4. D
   +2, +3

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1. A
   546 K
2. B
   273 K
3. C
   2730 K
4. D
   5460 K

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1. A
   Phenylhydrazone
2. B
   Ethyl benzene
3. C
   n-propyl benzene
4. D
   Isopropyl benzene

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1. A
   $CH_3COONa$
2. B
   $Na_2SO_4$
3. C
   $CuSO_4$
4. D
   $Na_2CO_3$

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1. A
   25%
2. B
   50%
3. C
   75%
4. D
   12.5%

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1. A
   AB
2. B
   $AB_2$
3. C
   $AB_3$
4. D
   $A_2B$

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1. A
   $1.08\times10^{-13}$
2. B
   $8.1\times10^{-15}$
3. C
   $2.7\times10^{-15}$
4. D
   $2.0\times10^{-13}$

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1. A
   Benzoquinone
2. B
   Cyclohexane
3. C
   Benzene
4. D
   Cyclohexanol

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1. A
   0.03 M
2. B
   0.04 M
3. C
   0.05 M
4. D
   0.06 M

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1. A
   $+52.7^\circ$
2. B
   $-92.4^\circ$
3. C
   $+66.5^\circ$
4. D
   $+40.3^\circ$

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1. A
   Polyacrylonitrile
2. B
   Glyptal
3. C
   Polycarbonate
4. D
   Buna-S

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1. A
   Ammine
2. B
   Nitrato
3. C
   Cyano
4. D
   Chloro

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1. A
   Condensation reaction
2. B
   Addition reaction
3. C
   Substitution reaction
4. D
   Elimination reaction

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1. A
   $n$
2. B
   $2n$
3. C
   $0.5n$
4. D
   $0.1n$

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1. A
   Ethyldimethylamine
2. B
   N-Methylaniline
3. C
   N,N-dimethylmethanamine
4. D
   N,N-Dimethylaniline

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

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1. A
   $\frac{y}{x}$
2. B
   $-\frac{y}{x}$
3. C
   $\frac{x}{y}$
4. D
   $-\frac{x}{y}$

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1. A
   $p\vee q\vee\sim r$
2. B
   $p\wedge q\wedge\sim r$
3. C
   $\sim p\vee q\wedge r$
4. D
   $\sim p\vee\sim q\vee\sim r$

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1. A
   $\sqrt{\frac{340}{61}}$
2. B
   $\sqrt{\frac{341}{61}}$
3. C
   $\sqrt{\frac{341}{61}}$
4. D
   $\sqrt{\frac{341}{61}}$

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

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1. A
   $\frac{1}{2},\frac{3}{4\sqrt{2}}$
2. B
   $\frac{1}{2},-\frac{3}{4\sqrt{2}}$
3. C
   $\frac{1}{2},\frac{3}{2\sqrt{2}}$
4. D
   $\frac{1}{2},-\frac{3}{2\sqrt{2}}$

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1. A
   $-\frac{1}{\sqrt{3}}$
2. B
   $\frac{1}{\sqrt{3}}$
3. C
   $-\sqrt{3}$
4. D
   $\sqrt{3}$

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1. A
   $3x+4y\geq12,\; y-x\geq0,\; y\leq3,\; x,y\geq0$
2. B
   $3x+4y\leq12,\; y-x\leq0,\; y\geq3,\; x,y\geq0$
3. C
   $3x+4y\leq12,\; y-x\geq0,\; y\leq3,\; x,y\geq0$
4. D
   $3x+4y\geq12,\; y-x\leq0,\; y\geq3,\; x,y\geq0$

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1. A
   $\frac{-\sqrt{5}+1}{8}$
2. B
   $\frac{\sqrt{5}-1}{8}$
3. C
   $\frac{\sqrt{5}+1}{8}$
4. D
   $\frac{-1-\sqrt{5}}{8}$

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1. A
   $5$
2. B
   $\sqrt{13}$
3. C
   $\sqrt{12}$
4. D
   $\sqrt{15}$

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