Match the reactions given in Column A with names given in Column B. Column-A Column B (a) CH 3 OH + CH 3 COOH → H + CH 3 COOCH 3 + H 2 O (i) Addition Reaction (b) CH 2 = CH 2 + H 2 → Ni CH 3 - CH 3 (ii) Substitution Reaction (c) CH 4 + C l 2 → Sunlight CH 3 Cl + HCl (iii) Neutralisation Reaction (d) CH 3 COOH + NaOH → CH 3 COONa + H 2 O (iv) Esterification Reaction

Esterification reaction : When alcohol reacts with a carboxylic acid in presence of concentrated sulphuric acid, it will form the ester. The reaction is known the esterification reaction. Addition Reaction : A reaction in which two or more molecules combine to form a bigger molecule is called an addition reaction. Substitution reaction : A substitution reaction is a type of chemical reaction where an atom or functional group of a molecule is replaced by another atom or functional group. Neutralization reaction : When acid reacts with base, it will form salt and water, this type of reaction is known as a neutralization reaction. Column A Column B (a) CH 3 OH + CH 3 COOH → H + CH 3 COOCH 3 + H 2 O (i) Esterification reaction (b) CH 2 = CH 2 + H 2 → Ni CH 3 - CH 3 (ii) Addition reaction (c) CH 4 + C l 2 → Sunlight CH 3 Cl + HCl (iii) Substitution reaction (d) CH 3 COOH + NaOH → CH 3 COONa + H 2 O (iv) Neutralization reaction

E M B I B E

Core Science Chemistry>Chapter 4 - Carbon and its Compounds>EXERCISE 4C>Q 7

MEDIUM

10th CBSE

IMPORTANT

Earn 100

Compound “X” is a symmetrical gaseous hydrocarbon. Its empirical formula is $C H_{2}$ . “X” decolourises bromine water.
It forms monochloro addition product “Y” with gaseous HCI. Molecular weight of “Y” is 64.5. Identify the compounds “X” and “Y”. Write the chemical reaction of “X” with bromine water and HCl gas.

Important Questions on Carbon and its Compounds

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10th CBSE

IMPORTANT

Core Science Chemistry>Chapter 4 - Carbon and its Compounds>EXERCISE 4C>Q 8

An organic compound “X” that is sometimes used as anti-freeze has the molecular formula

C_{2} H_{6} O .

“X” on oxidation gives a compound “Y”, which gives effervescence with baking soda solution. What can “X” and “Y” be? Write their structural formulae.

MEDIUM

10th CBSE

IMPORTANT

Core Science Chemistry>Chapter 4 - Carbon and its Compounds>EXERCISE 4C>Q 9

Acetic acid reacts with ethyl alcohol in the presence of con.

H_{2} S O_{4}

producing a sweet-smelling compound.
For the reaction (i) Name the main product (ii) Write the chemical equation.

MEDIUM

10th CBSE

IMPORTANT

Core Science Chemistry>Chapter 4 - Carbon and its Compounds>EXERCISE 4C>Q 10

Explain the following:
(i) Air holes of a gas burner have to be adjusted, when a heated vessel gets blackened by the flame.
(ii) Use of synthetic detergents causes pollution of water.

MEDIUM

10th CBSE

IMPORTANT

Core Science Chemistry>Chapter 4 - Carbon and its Compounds>EXERCISE 4C>Q 11

Name the gas evolved when ethanoic acid is added to sodium carbonate. How would you prove the presence of this gas.

HARD

10th CBSE

IMPORTANT

Core Science Chemistry>Chapter 4 - Carbon and its Compounds>EXERCISE 4C>Q 12

Match the reactions given in Column A with names given in Column B.

	Column-A		Column B
(a)	${CH}_{3} OH + {CH}_{3} COOH \overset{H^{+}}{\to} {CH}_{3} {COOCH}_{3} + H_{2} O$	(i)	Addition Reaction
(b)	${CH}_{2} = {CH}_{2} + H_{2} \overset{Ni}{\to} {CH}_{3} - {CH}_{3}$	(ii)	Substitution Reaction
(c)	${CH}_{4} + C l_{2} \overset{Sunlight}{\to} {CH}_{3} Cl + HCl$	(iii)	Neutralisation Reaction
(d)	${CH}_{3} COOH + NaOH \to {CH}_{3} COONa + H_{2} O$	(iv)	Esterification Reaction