1. A
   Novolac
2. B
   Buna-s
3. C
   Dacron
4. D
   PHBV

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1. A
   2
2. B
   4
3. C
   6
4. D
   8

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1. A
   $O_{2}\ ^{+}$
2. B
   $O_{2}\ ^{-}$
3. C
   $\left\lbrack Cu\left( {NH}_{3} \right)_{4} \right\rbrack{Cl}_{2}$
4. D
   $CuI$

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1. A
   1.595
2. B
   1.095
3. C
   2.904
4. D
   2.945

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1. A
   $0.08{\text{ }\min}^{- 1}$
2. B
   $0.16{\text{ }\min}^{- 1}$
3. C
   $0.24{\text{ }\min}^{- 1}$
4. D
   $0.02{\text{ }\min}^{- 1}$

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

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1. A
   4.90
2. B
   1.73
3. C
   2.80
4. D
   0

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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
   88
2. B
   64
3. C
   100
4. D
   80

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1. A
   $\frac{- 181}{69}$
2. B
   $\frac{220}{21}$
3. C
   $\frac{- 291}{76}$
4. D
   $\frac{151}{63}$

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1. A
   3
2. B
   11
3. C
   5
4. D
   7

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1. A
   (A) is false, but (B) and (C) are true
2. B
   (A) and (C) are true while (B) is false
3. C
   (A) is true while (B) and (C) are false
4. D
   (A) and (B) are false while (C) is true

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1. A
   $b = 1,a \in R - \{ 0\}$
2. B
   $a = 1,\text{ }b \in R - \{ 0\}$
3. C
   $a = 2,b = 2$
4. D
   $a = 2,b = 3$

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1. A
   $- \pi$
2. B
   $\pi$
3. C
   0
4. D
   1

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

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1. A
   No such $\alpha$ exists
2. B
   5
3. C
   8
4. D
   6

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

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1. A
   greater than $\frac{1}{8}$ but less than $\frac{1}{4}$
2. B
   greater than $\frac{1}{2}$
3. C
   greater than $\frac{1}{4}$ but less than $\frac{1}{2}$
4. D
   exactly equal to $\frac{1}{2}$

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1. A
   -22
2. B
   5
3. C
   -27
4. D
   0

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

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

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1. A
   $( - 1,1,2)$
2. B
   $(1,1,1)$
3. C
   $(1,1,2)$
4. D
   $(1,2,2)$

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1. A
   9
2. B
   11
3. C
   7
4. D
   1

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1. A
   $(3x - y)^{2} + (x - 3y) + 2 = 0$
2. B
   $2(3x - y)^{2} + (x - 3y) + 2 = 0$
3. C
   $(3x - y)^{2} + 2(x - 3y) + 2 = 0$
4. D
   $2(x - 3y)^{2} + (3x - y) + 2 = 0$

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