Q. No.Match the reactions given in Column I with the type of reaction given
in Column II and mark the appropriate option.
Column I
Column II
A.
CH2=CH2 + H2O \(\xrightarrow[]{H^{+}}\)
CH3CH2OH
1.
Hydrogenation
B.
CH2=CH2 + H2 \(\xrightarrow[]{Pd}\)
CH3-CH3
2.
Halogenation
C.
CH2=CH2 + Cl2 →
Cl-CH2-CH2-Cl
3.
Polymerisation
D.
3CH≡CH \(\xrightarrow[heat]{Cu \ tube}\)
C6H6
4.
Hydration
5.
Condensation
Codes
Options:
A
B
C
D
1.
2
3
4
1
2.
1
2
3
5
3.
5
4
3
2
4.
4
1
2
3
in Column II and mark the appropriate option.
CH3CH2OH
CH3-CH3
Cl-CH2-CH2-Cl
C6H6
Assertion: Toluene on Friedel Crafts methylation gives o- and p- xylene.
Reason: -group bonded to benzene ring increases electron density at o- and p- position.
1. Both assertion and reason are true and the reason is the correct explanation of assertion.
2. Both assertion and reason are true and the reason is not the correct explanation of assertion.
3. Assertion is true but the reason is false.
4. Assertion is false but the reason is true.
| Assertion (A): | Nitration of benzene with nitric acid requires the use of concentrated sulphuric acid. |
| Reason (R): | The mixture of concentrated sulphuric acid and concentrated nitric acid produces the electrophile, NO2+ . |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | (A) is False but (R) is True. |
Given below are two statements:
| Assertion (A): | Among isomeric pentanes, 2,2-dimethylpropane has the highest boiling point. |
| Reason (R): | Branching does not affect the boiling point. |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 3. | Both (A) and (R) are false. |
| 4. | (A) is true but (R) is false. |
Match the hydrocarbons in Column I with the boiling points given in Column II.
| A. n-pentane | 1. 282.5 K |
| B. iso-pentane | 2. 309 K |
| C. neo-pentane | 3. 301 K |
Codes
| Options: | A | B | C |
| 1. | 2 | 3 | 1 |
| 2. | 1 | 2 | 3 |
| 3. | 2 | 1 | 3 |
| 4. | 3 | 2 | 1 |
Which of the following is a free radical substitution reaction?
1. Benzene with Br2/AlCl3
2. Acetylene with HBr
3. Methane with Br2/hv
4. Propene with HBr/(C6H5COO)2
The products of ozonolysis of 1,2-dimethyl benzene (o-xylene) are -
1. Methylglyoxal, 1, 2-dimethylglyoxal, and glyoxal
2. Methylglyoxal, 1, 3-dimethylglyoxal, and glyoxal
3. Methylglyoxal, 1, 4-dimethylglyoxal, and glyoxal
4. Methylglyoxal, 1, 5-dimethylglyoxal, and glyoxal
The correct order of decreasing reactivity of the following compounds:
Chlorobenzene, 2,4-Dinitrochlorobenzene, and p-Nitrochlorobenzene
with an electrophile (E+) is :
| 1. | Chlorobenzene > p–Nitrochlorobenzene > 2,4-Dinitrochlorobenzene |
| 2. | p – Nitro chlorobenzene > 2, 4-Dinitrochlorobenzene > Chlorobenzene |
| 3. | Chlorobenzene > 2, 4-Dinitrochlorobenzene > p-Nitrochlorobenzene |
| 4. | 2, 4-Dinitrochlorobenzene > Chlorobenzene > p-Nitrochlorobenzene |
Out of the above alkenes, the ones that can give 2-methyl butane on hydrogenation are-
| 1. | a, b | 2. | b, c |
| 3. | a, c | 4. | a, b, c |
The reagent used in the above conversion is:
1. Cr2O3
2. Alc. KOH
3. Red hot Fe
4. NaNH2/liq.NH3
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