i. Some acetic acid is treated with solid NaHCO3. The resulting solution will be ……….. (a) colourless (b) blue (c) green

Question

Choose the correct alternative and rewrite the statement:

i. Some acetic acid is treated with solid NaHCO₃. The resulting solution will be ……….. 

(a) colourless 

(b) blue 

(c) green 

(d) yellow

ii. Ethanoic acid has a ……… odour. 

(a) rotten eggs 

(b) pungent 

(c) mild 

(d) vinegar-like

iii. Acetic acid ………..

(a) turns red litmus blue 

(b) has pungent odour 

(c) is red in colour 

(d) is odourless

iv. When acetic acid reacts with sodium metal ……….. gas is formed. 

(a) oxygen 

(b) hydrogen 

(c) chlorine 

(d) nitrogen

v. The molecular formula of acetic acid (ethanoic acid) is …………

(a) HCOOH

(b) CH₃COOH

(c) C₂H₅COOH

(d) C₃H₇COOH

vi. When sodium bicarbonate solution is added to dilute acetic acid ………… 

(a) a gas is evolved

(b) a solid settles at the bottom 

(c) the mixture becomes warm 

(d) the colour of the mixture becomes yellow

vii. 2 ml of ethanoic acid was taken in each of test tubes A, B, C and 2 ml, 4 ml, 6 ml of water was added respectively to them. A clear solution is obtained in ……….. 

(a) test tube A 

(b) test tube B 

(c) test tube C 

(d) all the test tubes

viii. In the presence of acid catalyst, ethanoic acid reacts with ethanol and ……….. ester is produced. 

(a) ethanol 

(b) ethanoic 

(c) ethyl ethanoate 

(d) ethyl ethanol

ix. The following structural formula belongs to which carbon compound?

(a) Camphor 

(b) Benzene 

(c) Starch 

(d) Glucose

x. What type of reaction is shown below?

(a) Addition 

(b) Substitution 

(c) Decomposition 

(d) Reduction

xi. The carbon compound is used in daily life is ……….. 

(a) edible oil 

(b) salt 

(c) carbon dioxide 

(d) baking soda

Answer 1

i. Some acetic acid is treated with solid NaHCO₃. The resulting solution will be colourless.

ii. Ethanoic acid has a vinegar-like odour.

iii. Acetic acid has pungent odour.

iv. When acetic acid reacts with sodium metal hydrogen gas is formed.

v. The molecular formula of acetic acid (ethanoic acid) is CH₃COOH.

vi. When sodium bicarbonate solution is added to dilute acetic acid a gas-is evolved.

vii. 2 ml of ethanoic acid was taken in each of test tubes A, B, C and 2 ml, 4 ml, 6 ml of water was added respectively to them. A clear solution is obtained in all the test tubes.

viii. In the presence of acid catalyst, ethanoic acid reacts with ethanol and ethyl ethanoate ester is produced.

ix. (b) Benzene

x. (b) substitution

xi. The carbon compound is used in daily life is edible oil