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XII CHEMISTRY UNIT 3 PART 17

Total questions: 10

Worksheet time: 5mins

Name
Class
Date
1.

Which one of the following is a weak acid?

a)

HF

b)

HCl

c)

HBr

d)

HI

2.

Reagent not stored in glass bottles?

a)

HCI

b)

HBr

c)

HF

d)

HI

3.

More reactive element is----

a)

Fluorine

b)

Chlorine

c)

Bromine

d)

Iodine

4.

The correct order of the acidity of hydrohalic acids?

a)

HF > HCI >HBr> HI

b)

HCI >HF >HBr>HI

c)

) HBr> HCI >HF > HI

d)

HI >HBr> HCl > HF

5.

Consider the following statements (i) In interhalogen compounds, the central atom will be the smaller one. (ii) It can be formed only between two halogen and not more than two halogens. (iii) They are strong reducing agents. Which of the above statement(s) is / are not correct? *

a)

(i) only

b)

(ii) and (iii)

c)

(i) and (iii)

d)

(iii) only

6.

Each halogen combines with other halogens to form a series of compounds called ………….

a)

noble gases compounds

b)

Inter-halogen compounds

c)

halogen compounds

d)

chalcogen compounds

7.

At room temperature, hydrogen halides are gases but …………. can be readily liquefied.

a)

hydrogen fluroide

b)

hydrogen iodide

c)

hydrogenchloride

d)

hydrogen bromide

8.

Liberation of iodine which gives a …………. colouration with starch

a)

red - orange

b)

green black

c)

yellow black

d)

blue-black

9.

Fluorine is the best oxidizing agent because it has

a)

highest electron affinity

b)

highest reduction potential

c)

highest oxidation potential

d)

lowest electron affinity

10.

Inter halogen compounds is strong -------.

a)

oxidizing agents

b)

reducing agents

c)

dehydrating agents

d)

none