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1. A
   $R_2C=CHR > R_2C=CH_2 > R_2C=CR_2$
2. B
   $R_2C=CR_2 > R_2C=CHR > R_2C=CH_2$
3. C
   $R_2C=CH_2 > R_2C=CR_2 > R_2C=CHR$
4. D
   $R_2C=CR_2 > R_2C=CH_2 > R_2C=CHR$

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1. A
   $22.4\text{ dm}^3$
2. B
   $25.0\text{ dm}^3$
3. C
   $33.6\text{ dm}^3$
4. D
   $56.0\text{ dm}^3$

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1. A
   Group-14
2. B
   Group-15
3. C
   Group-16
4. D
   Group-13

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1. A
   $2.5 \times 10^{-6}\text{ mol dm}^{-3}\text{sec}^{-1}$
2. B
   $3.75 \times 10^{-6}\text{ mol dm}^{-3}\text{sec}^{-1}$
3. C
   $5.0 \times 10^{-6}\text{ mol dm}^{-3}\text{sec}^{-1}$
4. D
   $7.5 \times 10^{-6}\text{ mol dm}^{-3}\text{sec}^{-1}$

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1. A
   It is aldohexose.
2. B
   It is nonreducing sugar.
3. C
   It contains three chiral carbon atoms.
4. D
   Its ring structure is hemiketal.

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1. A
   $A_2B$
2. B
   $AB_2$
3. C
   $A_2B_3$
4. D
   $AB$

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1. A
   26.45 pm
2. B
   13.23 pm
3. C
   48.62 pm
4. D
   39.46 pm

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1. A
   $\xrightarrow{\text{dil. HCl, }\Delta}$
2. B
   $\xrightarrow{\text{NaNO}_2 + \text{HCl, low temp.}}$
3. C
   $\xrightarrow{H_3O^+, \Delta}$
4. D
   NaOH, 623 K

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1. A
   strong acid and its salt with weak base.
2. B
   strong base and its salt with weak acid.
3. C
   weak acid and its salt with strong base.
4. D
   weak base and its salt with strong acid.

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1. A
   Single step mechanism.
2. B
   Backside attack of nucleophile.
3. C
   Formation of planar carbocation intermediate.
4. D
   Involves simultaneous bond breaking and bond forming.

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1. A
   $1.247 \times 10^2\text{ kPa}$
2. B
   $2.431 \times 10^3\text{ kPa}$
3. C
   $1.031 \times 10^5\text{ kPa}$
4. D
   $3.247 \times 10^5\text{ kPa}$

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1. A
   Nichrome
2. B
   Cupra-nickel
3. C
   Stainless steel
4. D
   Bronze

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1. A
   4.0%
2. B
   3.5%
3. C
   2.5%
4. D
   10.0%

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1. A
   LDPE
2. B
   Polypropylene
3. C
   HDPE
4. D
   Polystyrene

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1. A
   Na
2. B
   Mg
3. C
   Al
4. D
   Si

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1. A
   Acetophenone
2. B
   Butanone
3. C
   Benzophenone
4. D
   Pentan-2-one

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1. A
   $90\text{ g mol}^{-1}$
2. B
   $120\text{ g mol}^{-1}$
3. C
   $164\text{ g mol}^{-1}$
4. D
   $180\text{ g mol}^{-1}$

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1. A
   methyl carbinol
2. B
   ethyl carbinol
3. C
   propyl carbinol
4. D
   trimethyl carbinol

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1. A
   $-15\text{ kJ}$
2. B
   $-17\text{ kJ}$
3. C
   $13\text{ kJ}$
4. D
   $19\text{ kJ}$

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1. A
   4s
2. B
   4p
3. C
   4d
4. D
   4f

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1. A
   These are generally hard.
2. B
   These form alloys with other metals.
3. C
   These do not conduct heat.
4. D
   These are malleable and ductile.

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1. A
   $3.6\text{ mol}^{-2}\text{dm}^6\text{sec}^{-1}$
2. B
   $1.8\text{ mol}^{-2}\text{dm}^{-6}\text{sec}^{-1}$
3. C
   $18\text{ mol}^{-2}\text{dm}^6\text{sec}^{-1}$
4. D
   $36\text{ mol}^{-2}\text{dm}^{-6}\text{sec}^{-1}$

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1. A
   PAN
2. B
   Nylon 6
3. C
   Nylon 6,6
4. D
   Nylon 2,6

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1. A
   Simple cubic close packed
2. B
   Body centred cubic
3. C
   Face centred cubic
4. D
   Hexagonal close packed

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1. A
   $\text{SO}_2$
2. B
   $\text{Cl}_2$
3. C
   $\text{NH}_3$
4. D
   $\text{O}_2$

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