P - Block Elements Test

Result

P - Block Elements Test - 54

Score
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Rank
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TIME Taken - -

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Weekly Quiz Competition

Question 1
4 / -1

Solubility of iodine in water may be increased by adding

A
chloroform

B
potassium iodide

C
carbon disulphide

D
sodium thiosulphate

Solution
Question 2
4 / -1

Apatite is an ore of

A
fluorine

B
chlorine

C
bromine

D
iodine

Solution
Question 3
4 / -1

Which one of the following has lowest bond dissociation energy ?

A
CI—CI

B
F—F

C
Br—Br

D
I—I
Question 4
4 / -1

When F₂ reacts with hot and concentrated NaOH then following will be obtained

A
O₂

B
H₂

C
Na₂O

D
Na

Solution
Question 5
4 / -1

Which of the following chloride is water insoluble ?

A
HCl

B
AgCl

C
Both (1) and (2)

D
None of these
Question 6
4 / -1

Fluorine is the best oxidising agent because it has

A
highest electron affinity

B
highest

C
highest

D
lowest electron affinity

Solution
Question 7
4 / -1

The deficiency of iodine in diet causes

A
rickets

B
night blindness

C
beri-beri

D
goitre
Question 8
4 / -1

Among the halogens, the one which is oxidised by nitric acid is

A
fluorine

B
iodine

C
chlorine

D
bromine

Solution
Question 9
4 / -1

When chlorine is passed through concentrated solution of KOH, the compound formed is

A
KClO₄

B
KClO₃

C
KClO₂

D
KClO

Solution
Question 10
4 / -1

Which one will liberate Br₂ from KBr ?

A
I₂

B
SO₂

C
HI

D
Cl₂

Solution