Hydrocarbons · Question 42

Nitrobenzene can be prepared from benzene by using a mixture of conc. HNO3 and conc. H2SO4. In the mixture, nitric acid acts as a/an

1. acid
2. base
3. catalyst
4. reducing agent

H3C- CH3 |CH-CH=CH2 + HBr A A (predominantly) is

1. CH3- Br |CH- CH3 |CH-CH3
2. CH3- CH3 |CH- Br |CH-CH3
3. CH3- CH3 |CH-CH2-CH2Br
4. CH3- Br | CH3 |C-CH2CH3

The order of decreasing reactivity towards an electrophilic reagent, for the following would be (i) benzene (ii) toluene (iii) chlorobenzene (iv) phenol

1. (ii) > (iv) > (i) > (iii)
2. (iv) > (iii) > (ii) > (i)
3. (iv) > (ii) > (i) > (iii)
4. (i) > (ii) > (iii) > (iv)

Predict the product C obtained in the following reaction of 1-butyne. CH3CH2-C CH + HCl B HI C

1. CH3-CH2-CH2- Cl | I |C-H
2. CH3-CH2- I |CH-CH2Cl
3. CH3CH2- Cl | I |C-CH3
4. CH3- Cl |CH-CH2CH2I

Which of the compound with molecular formula C5H10 yields acetone on ozonolysis?

1. 3-Methyl-1-butene
2. Cyclopentane
3. 2-Methyl-1-butene
4. 2-Methyl-2-butene

The correct order regarding the electronegativity of hybrid orbitals of carbon is

1. sp < sp2 < sp3
2. sp > sp2 < sp3
3. sp > sp2 > sp3
4. sp < sp2 > sp3

Which one of the following alkenes will react faster with H2 under catalytic hydrogenation conditions ?

1. [figure]
2. [figure]
3. [figure]
4. [figure]

Products of the following reaction : CH3C CCH2CH3 [(ii) hydrolysis](i) O3 are

1. CH3COOH + CO2
2. CH3COOH + HOOC.CH2CH3
3. CH3CHO + CH3CH2CHO
4. CH3COOH + CH3COCH3

Using anhydrous AlCl3 as catalyst, which one of the following reactions produces ethylbenzene (PhEt)?

1. H3C-CH2OH + C6H6
2. CH3-CH=CH2 + C6H6
3. H2C=CH2 + C6H6
4. H3C-CH3 + C6H6

Reaction of HBr with propene in the presence of peroxide gives

1. isopropyl bromide
2. 3-bromopropane
3. allyl bromide
4. n-propyl bromide