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
CH3CH2OH
CH3-CH3
Cl-CH2-CH2-Cl
C6H6
| Assertion (A): | Toluene on Friedel Crafts methylation gives o- and p- xylene. |
| Reason (R): | -group bonded to benzene ring increases electron density at o- and p- position. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True and (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | (A) is False but (R) 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. Isopentane | 2. 309 K |
| C. Neopentane | 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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