Action of Water on Calcium Carbide

Q. Write a balanced chemical equation of decomposition of vegetable matter into compost.

Q. Ethyne and hydrogen in the presence of Raney Nickel catalyst react to produce

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

Q. CaOcl2+H2SO4---?
WHAT HAPPENS WHEN CALCIUM OXYCHLORIDE REACTS WITH SULPHURIC ACID?

Q.

Which hydrocarbon is formed, when calcium carbide reacts with cold water?

1. Ethane

2. Ethyne

3. Alcohol

4. Ethene

Q.

Do calcium react with oxygen

Q.

The polymer of ethene is known as

1. Tetrafluroethene

2. Polyvinylchloride

3. Polyisoprene

4. Polyethene

Q. what is hydrogeneration and explain its industrial application

Q.

Give a chemical tests to identify hydrogen sulphide and carbon dioxide.

Q.

How is acetylene prepared in the laboratory ?
(a) Draw a diagram. (b) Give an equation.
(c) How is pure dry gas collected ?

Q.

Butanone is a four-carbon compound with the functional group

1. CO₂

2. CO

3. C₂H₂

4. CH₄

Q.

Equal volumes of ethene and hydrogen at same temperature and pressure are passed through catalyst maintained at 300⁰C, an addition reaction takes place. The catalyst used is:

1. Chromium

2. Iron (II) oxide

3. Vanadium pentoxide

4. Nickel

Q. Which of the following reaction will give acetylene as a major product?

1. $2\left[C{H}_3\right]\underset{△}{\stackrel{Ag}{\to }}$
2. $H_{3}C-C{H}_2-Br\underset{KOH}{\stackrel{alc.}{}}$
3. $\underset{\underset{Br}{|}}{C{H}_2}-\underset{\underset{Br}{|}}{C{H}_2}\underset{△}{\stackrel{Zn}{\to }}$
4. All of these

Q. Calcium carbide reacts with water to produce:

1. ethane
2. ether
3. acetylene
4. alcohol

Q. ................... carbide reacts with water to produce methane.

1. Aluminum
2. A & B
3. Calcium
4. None of the above

Q.

What is the by-product formed when calcium carbide reacts with cold water?

1. Calcium hydroxide
2. Calcium oxide
3. Carbon dioxide
4. Calcium hydride

Q.

The polymer of ethene is known as

1. Tetrafluroethene

2. Polyisoprene

3. Polyvinylchloride

4. Polyethene

Q. The process of converting hydrated alumina into anhydrous alumina is called :

1. calcination
2. roasting
3. smelting
4. dressing

Q. Chloroform on reduction with zinc and water gives:

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

Q. Acetylene may be prepared by electrolysis of:

1. potassium oxalate
2. potassium acetate
3. potassium hydroxide
4. potassium succinate

Q. Tetra bromoethane on heating with $Zn$ gives:

1. Ethyl bromide
2. Ethane
3. Ethene
4. Ethyne

Q. Name the hydrocarbon which;
Is a linear molecule

Q.

Which hydrocarbon is formed, when calcium carbide reacts with cold water?

1. Ethane

2. Ethene

3. Alcohol

4. Ethyne

Q. State the conditions required for the following reactions to take place:
Preparation of ethyne from ethylene dibromide

Q. Which of the following compounds is an aldehyde with three carbon atoms?

1. Butanol
2. Butanal
3. Propanal
4. Propanol

Q. Chemical equations of preparing some substance are given. Which of the given chemical equation is used for the preparation of ethyne?

1. $\left(1\right)$ and $\left(2\right)$
2. $\left(2\right)$
3. $\left(3\right)$
4. $\left(1\right)$

Q.

$Ca{C}_2\stackrel{H_{2}O}{\to }A\underset{N{H}_{4}OH}{\overset{C{u}_{2}C{l}_2}{\to }}B.$ Incorrect statement is

1. Pure form of 'A' has garlic smell

2. 'A' is used in Hawker's lamp and Holme's signal

3. 'B' is red ppt

4. Oxidation state of 'Cu' in Cu₂Cl₂ and 'B' is same

Q. Ethyne + hydrogen in presence of nickel gives what ?

Q. Write the balanced chemical equation for the preparation of benzene from any suitable alkaline.