Preparation of Methane from Aluminium Carbide

Q.

what is baking powders formula?

Q.

Marsh gas mainly contains

Q. Give chemical equation for :
(i) The laboratory preparation of methane from sodium acetate.
(ii) The industrial preparation of methanol from water gas.
(iii) The reaction of one mole of ethene with one mole of chlorine gas.
(iv) The preparation of ethyne from 1, 2-dibromoethane.

[4 MARKS]

Q.

Write down the chemical formula of the simplest hydrocarbon.

Q.

Convert :
(a) Methane into chloroform,
(b) Sodium acetate into methane,
(c) Methyl iodide into ethane,
(d) Aluminium carbide into methane.

Q. (a) Give the general formula of alkanes. Write the name, structural formula and physical state of the compound containing:
(i) 3 carbon atoms
(ii) 8 carbon atoms

(b) Which of the compounds named in (a) would show :
(i) Isomerism
(ii) Higher melting point
(iii) Higher density
(v) Lower boiling point? [5 MARKS]

Q.

The product of the following reaction

${\text{C}}_{\text{6}}{\text{H}}_{\text{6}}{\text{+ Cl}}_{\text{2}}\stackrel{\text{sunlight}}{\to }$

Q. How is:
(a) methane and (b) ethane prepared in the laboratory?

[2 MARKS]

Q.

The methane molecule has a pyramidal shape.

1. True

2. False

Q. Give equations to carry out the following conversions. Also, state the necessary conditions for each conversation: [5 MARKS]
i) Ethane to Ethylene
ii) Methyl iodide to Methane
iii) Methane to Methanol
iv) Methane to Methyl chloride
v) Methane to Carbon tetrachloride
vi) Sodium acetate to Methane
vii) Acetaldehyde to Ethane
viii) Ethane to Acetaldehyde
ix) Ethane to Acetic acid
x) Methane to Chloroform.

Q.

Which chemical substance is added to LPG to help in detection of its leakage?

1. Propane

2. Hydrogen sulphide

3. Isobutane

4. Ethanethiol

Q.

What is a substitution reaction?

Q.

When carbon combines with hydrogen in the presence of nickel, ———(methane, ammonia) is formed.

Q. What are the major reactions of catalytic oxidation of alkene ?

Q. How would you convert the following?
Acetic acid to Methane

Q.

Which of the following is not isomeric with diethyl ether?

1. 2-Methyl-2-propanol
2. Butanone
3. 1-Butanol
4. n-propyl methyl ether

Q. A balloon filled with metane $C{H}_4$ is pricked with a sharp poiny and quickly plunge hydrogen at the same preasure.After sometime the balloon will have:

1. Enlarged
2. Collapsed
3. Ethylene $\left(C_2{H}_4\right)$ inside it
4. Remained unchanged in size

Q. The reaction, $H_{2}C=C{H}_2+H_2\underset{250-{300}^{\circ }C}{\overset{Ni}{\to }}C{H}_3-C{H}_3$ is called:

1. Wurtz's reaction
2. Kolbe's synthesis
3. Sabatier and Senderen's reaction
4. Carbylamine reaction

Q. Methane is prepared in the laboratory by heating a mixture of sodium acetate and______.

1. water
2. soda lime
3. lime stone
4. sodium carbonate

Q. Which of the following reactions can be used to prepare methane?

1. Decarboxylation of sodium acetate
2. Kolbe's electrolysis of sodium acetate
3. Wurtz reaction
4. Hydrogenation of alkenes

Q. What are the names of the elements present in Methane?

1. Carbon and Hydrogen
2. Hydrogen and Chlorine
3. Oxygen and Hydrogen
4. Carbon and Chlorine

Q. 62.Which of the following is the most reactive towards electrophilic substitution? a)1-ethylcyclohexane b)Benzene c)1-isopropylcyclohexane d)1-tertbutylcyclohexane

Q. Why baking of bread is a practical application of Charle's law? [3 marks]

Q. The treatment of $C{H}_{3}MgX$ with $C{H}_3-C\equiv C-H$ produces:

1. $C{H}_4$
2. $C{H}_{3}HC=C{H}_2$
3. $C{H}_3-C\equiv C-C{H}_3$
4. $C{H}_{3}HC=CHC{H}_3$

Q. Metane is produced during the hydrolysis of ___________.

1. $Ca{C}_2$
2. $A{l}_4{C}_3$
3. $Mg{C}_2$
4. $SiC$

Q. Which among the following is the main constituent of Biogas?

1. Methane
2. Propane
3. Butane
4. Ethane

Q. The compound that reacts with $C{H}_{3}MgBr$ to yield methane as one of the products is?

1. $C{H}_{3}CHO$
2. $C{H}_{3}COO{H}_3$
3. $C{H}_{3}COOC{H}_3$
4. $C{H}_{3}C{H}_{2}OH$

Q. The compressed natural gas (CNG) mainly consists of

1. Methane
2. Butane
3. Propane
4. Hydrogen

Q. Main constituent of marsh gas is:

1. ethane
2. acetylene
3. ethyne
4. methane

Q. Fill in the blanks in the following:
Soda-lime is a mixture of NaOH and _______