Isomerisation and Aromatization of Alkanes

Q.

n - hexane and n - heptane, when passed through $C{r}_2{O}_3$ supported over alumina at ${600}^0$ C respectively give

1. Benzene and heptane

2. Heptane and toluene

3. Benzene and toluene

4. Benzne and benzene

Q. What is the hybridisation of borazine.

Q.

Which acid does not show optical isomerism?

Q. How many aromatic amines can be represented by molecular formula C₇H₉N?

1. 2
2. 3
3. 4
4. 5

Q.

The hydrocarbon with highest boiling point is

1. (a) hexane

2. (b) pentane

3. (c) butane

4. (d) propane

Q.

define the following terms
A) catenation
b) homologous series of hydrocarbons
c) saponification
d) hydrogenation

Q. Draw the structures of the following compounds: [5 MARKS]
(a) Prop-1-ene
(b) 2, 3-Dimethylbutane
(c) 2-Methylpropane
(d) 3-Hexene
(e) Prop-1-yne

Q.

Select the odd one from the following:

${\mathrm{CH}}_4,{\mathrm{C}}_3{\mathrm{H}}_8,{\mathrm{C}}_2{\mathrm{H}}_4,{\mathrm{C}}_2{\mathrm{H}}_6,{\mathrm{C}}_4{\mathrm{H}}_{10}$

Q. Match the following aromatic compounds with the alkanes that underwent aromatisation to form these.

1. ${\mathrm{CH}}_3({\mathrm{CH}}_2{)}_5{\mathrm{CH}}_3$
2. ${\mathrm{CH}}_3({\mathrm{CH}}_2{)}_6{\mathrm{CH}}_3$
3. ${\mathrm{CH}}_3({\mathrm{CH}}_2{)}_4{\mathrm{CH}}_3$

Q.

Write the general formula of alkane.

Q.

Which of the following is an isomeric pair?

1. butane and 2-ethylpropane

2. butane and 2-methylpropane

3. propane and 1-methylbutane

4. Ethane and propane

Q. Why carbon does not have 4 bonds

Q. Are Propyl group, Butyl group also included in Alkyl group

Q. A bromine atom attached to the ethane molecule can be named as ___

1. Bromo-ethane
2. Ethan-omine
3. Ethane-Brom
4. Etho-Bromine

Q.

Which of the following do/does not fall under a single homologous series?

1. Propene

2. 2 - Butane

3. 1 - Butene

4. 2 - Butyne

Q. A bromine atom attached to the Ethane molecule can be named as ___

1. Etho-Bromine
2. Bromo-ethane
3. Ethane-Brom
4. Ethan-omine

Q.

Which of the following is an isomeric pair?

1. Ethane and propane

2. propane and 1-methylbutane

3. butane and 2-methylpropane

4. butane and 2-ethylpropane

Q. unsubsituted biphenyl is non-planar but so differently meta substituted biphenyl are also non-planar by that logic and should show optical activity but ONLY ortho differently substituted biphenyl are optically active why so?

Q.

Which is X, Y, and Z respectively?

Hexane \( \frac{ Z }{600^{\circ}}> \)