Chemical Properties of Carbon

Q.

Question 3.2

Write a balanced chemical equation and state symbols for the reaction:
Sodium hydroxide solution (in water) reacts with hydrochloric acid solution (in water) to produce sodium chloride solution and water.

Q.

Write the balanced chemical equations for the following reactions-

(a) Sodium carbonate on reaction with hydrochloric acid in equal molar concentration gives sodium chloride and sodium hydrogen carbonate.

(b) Sodium hydrogen carbonate on reaction with hydrochloric acid gives sodium chloride, water and liberates carbon dioxide.

(c) Copper sulphate on treatment with potassium iodide precipitates cuprous iodide $\left({\text{Cu}}_2{\text{I}}_2\right)$, liberates iodine gas and also forms potassium sulphate.

Q. Question 19.1

Write the balanced chemical equation for the following reaction and identify the type of reaction.

Nitrogen gas is treated with hydrogen gas in the presence of a catalyst at 773K to form ammonia gas.

Q. Write the formulae of the compounds formed from the sets of carbon and oxygen.

Q. What is the atomicity of carbon? Explain.

Q.

The ratio in which hydrogen and chlorine atoms combine to form 1 molecule of HCl is

1. 2:1
2. 1:2
3. 1:1
4. 1:3

Q.

Write a note on carbon compounds in everyday use.

Q.

An aqueous solution of ${\mathrm{CH}}_3\mathrm{COONa}$ is ____________.

Q. Complete the following reaction: $C{H}_{3}C{H}_{2}OH+O_2\to$ $+H_{2}O$

1. $H_2$
2. $C{O}_2$
3. $C{H}_4$

Q. A mixture containing $60$% cetane and $40$% iso-octane will have:

1. Cetane number $60$
2. Cetane number $40$
3. Octane number $40$
4. None of these

Q. Assertion :Alkenes and alkynes are more reactive than alkanes. Reason: Alkenes and alkynes possess multiple bonds.

1. If both assertion and reason are CORRECT and reason is the CORRECT explanation of the assertion.
2. If both assertion and reason are CORRECT, but reason is NOT THE CORRECT explanation of the assertion.
3. If assertion is CORRECT, but reason is INCORRECT.
4. If assertion is INCORRECT, but reason is CORRECT.

Q. A pungent odour is obtained when methane reacts with ___ in the presence of sunlight.

1. Chlorine
2. HCl
3. $H_2$
4. Water

Q.

Write 5 points on Chemical properties of matter?

Q.

What is formed when halogens combine with each other?

Q. Question 12
What is hydrogenation? What is its industrial application?

Q.

Give an example for each describe the following reactions. Hoffmanns bromamide reaction.

Q.

Which of the following is/are true for carbon monoxide?

1. It is a colourless gas.

2. It is a pungent smelling gas

3. It gives a blue flame when burnt in air.

4. It is toxic in nature.

Q. Due to incomplete combustion, unsaturated hydrocarbon gives :

1. yellow flames with black smoke.
2. blue flame with black smoke.
3. yellow flame with no smoke.
4. no change in the colour of flame.

Q.

What is soot ? How can it be prepared at home?

Q. Which of the following compounds is optically active?

1. Butanal
2. $2$-methyl propan$-2-$ol
3. Butanol
4. Butan$-2$-ol

Q. Number of $1^0,2^0$ and $3^0$ hydrogen atoms isopentane are respectively?

1. 9, 2, 1
2. 6, 3, 1
3. 6, 2, 0
4. 6, 1, 1

Q. Propene reacts with bromine to form :

1. 2, 3 dibromopropane
2. 1, 2 dibromopropane
3. propane
4. bromopropane

Q. Identify most acidic hydrogen present in the above compound :

Q. Complete the following reaction: $C{H}_{3}C{H}_{2}OH+O_2\to$ $+H_{2}O$

1. $H_2$
2. $C{O}_2$
3. $C{H}_4$

Q. Write industrial production of ethanol with two uses.

Q. __________ is the most stable compound amongst the following.

1. But-2-ene
2. Butane
3. But-1-yne
4. But-1-ene

Q. How many carbon atoms are there in TNT (Trinitrotoluene) compond?

1. 5
2. 7
3. 3
4. 2

Q. Will it undergo wurtz reaction?

Q. Hydrocarbons on burning in the air give carbon dioxide:

1. water and heat
2. water and sulphur dioxide
3. carbon monoxide and heat
4. water and carbon monoxide

Q. In combustion reaction, carbon compounds are oxidized in the presence of :

1. hydrogen
2. oxygen
3. $C{O}_2$
4. water