P-Block Elements Test

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P-Block Elements Test - 1

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Weekly Quiz Competition

Question 1
1 / -0

Alum is used by dyers of clothes

A
for fire proofing fabrics

B
as first-aid for cuts

C
for softening hard water

D
as mordant
Question 2
1 / -0

In the aluminothermite process, Al acts as a/an

A
Flux

B
Oxidising agent

C
Reducing agent

D
Solder
Question 3
1 / -0

Thermite is a mixture of

A
3 parts of powdered Al and 1 part of Fe₂O₃

B
1 parts of powdered Al and 3 part of Fe₂O₃

C
1 parts of powdered Al and 1 part of Fe₂O₃

D
2 parts of powdered Al and 1 part of Fe₂O₃
Question 4
1 / -0

Hydrogen will not reduce

A
Heated cupric oxide

B
Heated ferric acid

C
Heated stannic oxide

D
Heated aluminium oxide
Question 5
1 / -0

In the electrolysis of alumina, cryolite is added to

A
lower the melting point of alumina

B
increase the electrical conductivity

C
minimise anodic effect

D
both (a) and (b)
Question 6
1 / -0

When zeolite which is hydrated sodium aluminium silicate is treated with hard water, the sodium ions are exchanged with

A
H⁺ ions

B
Ca²⁺

C
Mg²

D
Ca²⁺ and Mg²⁺
Question 7
1 / -0

In which of the following minerals, Al is not present

A
Cryolite

B
Mica

C
Feldspar

D
Fluorspar
Question 8
1 / -0

In commercial electrochemical process for Al extraction, electrolyte used is

A
Al(OH)₃ in NaOH solution

B
An aqueous solution of Al₂₍SO₄)3

C
A molten mixture of Al₂O₃ and Na₃AlF₆

D
A molten mixture of Al(OH)₃ and AlO(OH).
Question 9
1 / -0

Electrolytic reduction of alumina to aluminium by Hall-Heroult process is carried out

A
In the presence of NaCl

B
In the presence of fluorite

C
In the presence of cryolite which forms a melt with lower melting temperatures

D
In the presence of cryolite which forms a melt with high melting temperature.
Question 10
1 / -0

H₃BO₃ is

A
monobasic and weak Lewis acid

B
monobasic and weak Bronsted acid

C
monobasic and strong Lewis acid

D
tribasic and weak Bronsted acid

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P-Block Elements Test - 1

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P-Block Elements Test - 1

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SHARING IS CARING

Question 1

for fire proofing fabrics

as first-aid for cuts

for softening hard water

as mordant

Question 2

Flux

Oxidising agent

Reducing agent

Solder

Question 3

3 parts of powdered Al and 1 part of Fe2O3

1 parts of powdered Al and 3 part of Fe2O3

1 parts of powdered Al and 1 part of Fe2O3

2 parts of powdered Al and 1 part of Fe2O3

Question 4

Heated cupric oxide

Heated ferric acid

Heated stannic oxide

Heated aluminium oxide

Question 5

lower the melting point of alumina

increase the electrical conductivity

minimise anodic effect

both (a) and (b)

Question 6

H+ ions

Ca2+

Mg2

Ca2+ and Mg2+

Question 7

Cryolite

Mica

Feldspar

Fluorspar

Question 8

Al(OH)3 in NaOH solution

An aqueous solution of Al2(SO4)3

A molten mixture of Al2O3 and Na3AlF6

A molten mixture of Al(OH)3 and AlO(OH).

Question 9

In the presence of NaCl

In the presence of fluorite

In the presence of cryolite which forms a melt with lower melting temperatures

In the presence of cryolite which forms a melt with high melting temperature.

Question 10

monobasic and weak Lewis acid

monobasic and weak Bronsted acid

monobasic and strong Lewis acid

tribasic and weak Bronsted acid

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3 parts of powdered Al and 1 part of Fe₂O₃

1 parts of powdered Al and 3 part of Fe₂O₃

1 parts of powdered Al and 1 part of Fe₂O₃

2 parts of powdered Al and 1 part of Fe₂O₃

H⁺ ions

Ca²⁺

Mg²

Ca²⁺ and Mg²⁺

Al(OH)₃ in NaOH solution

An aqueous solution of Al₂₍SO₄)3

A molten mixture of Al₂O₃ and Na₃AlF₆

A molten mixture of Al(OH)₃ and AlO(OH).