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. |
Given below are two statements:
Assertion (A): | The compound tetraene has the following structural formula. It is a cyclic and has conjugated 8π electrons system but it is not an aromatic compound. |
Reason (R): | ( 4 n + 2 ) π electrons rule does not hold good for this compound and the ring is not planar. |
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. |
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 |
Match the following reactants in Column I with the corresponding reaction products in Column II.
Column I |
Column II |
A. |
1. Benzoic acid |
B. |
2. Methyl phenyl ketone |
C. |
3. Toluene |
D. |
4. Chlorobenzene |
5. Benzene hexachloride |
Options: | A | B | C | D |
1. | 4 | 3 | 2 | 1 |
2. | 1 | 2 | 3 | 5 |
3. | 5 | 4 | 3 | 2 |
4. | 4 | 5 | 3 | 2 |
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 |
Among the following reactions, incomplete combustion of methane is:
1. | \(2 \mathrm{CH}_4+\mathrm{O}_2 \xrightarrow[]{\mathrm{Cu/523 \ K/100 \ atm}} 2 \mathrm{CH}_3 \mathrm{OH}\) |
2. | \(\mathrm{CH}_4+\mathrm{O}_2 \xrightarrow[]{\mathrm{Mo_{2}O_{3}}} \mathrm{HCHO}+\mathrm{H}_2 \mathrm{O}\) |
3. | CH4 + O2 → C + 2H2O |
4. | CH4 + 2O2 → CO2 + 2H2O |
Arrange the following alkyl halides in decreasing order of the rate of -elimination reaction with alcoholic KOH.
A. | |
B. | CH3-CH2-Br |
C. | CH3-CH2-CH2-Br |
1. A > B > C
2. C > B > A
3. B > C > A
4. A > C > B
Arrange the following hydrogen halides in order of their increasing reactivity with propene:
1. | HCl > HBr > HI | 2. | HBr > HI > HCl |
3. | HI > HBr > HCl | 4. | HCl > HI > HBr |