ECAT Pre Engineering Chemistry Chapter 13 MCQ Test With Answer

Question # 1

Which element is deposited at the cathode during the electrolysis of brine in Nelson's cell?

H₂ A
Na B
Cl₂ C
O₂ D

Question # 2

Alkali metals have electrons in s-orbital:

one A
two B
three C
Four D

Question # 3

Diaphragm cell is used to prepare

sodium A
sodium hydroxide B
calcium C
magnesium D

Question # 4

The element caesium bears resemblance with:

Ca A
Cr B
Both of the above C
None of these D

Question # 5

Carbonates of alkaline earth metals decomposes to respectgive metal

Oxides A
Nitrates B
Sulphates C
CO₂ D

Question # 6

Gypsom added in cement is:

1% A
2% B
3% C
4% D

Question # 7

The oxides of beryllium are

acidic A
basic B
amphoteric C
none of these D

Question # 8

alkaline metal have electrons in s-orbitals:

One A
Two B
three C
Four D

Question # 9

Gypsom added in cement is

1% A
2% B
3% C
4% D

Question # 10

Maximum shielding effect is observing in

Li A
Be B
Mg C
Ca D

Question # 11

Plaster of paris is mixed with water, the expansion in volume is:

1% A
2% B
3% C
4% D

Question # 12

Which one is alkali metal in them?

Rubidium A
Magnesium B
Calcium C
Barium D

Question # 13

Which ion will have the maximum value of heat of hydration?

Na⁺ A
Cs⁺ B
Ba⁺ C
Mg⁺² D

Question # 14

Decomposition of carbonate of alkaline earth metals produce gas

N₂ A
Oxide B
CO₂ C
CO D

Question # 15

The strong alkaline solution in water is of metal:

Potassium A
Sodium B
Lithium C
Magnesium D

Question # 16

the oxides of beryllium are:

acidic A
basic B
amphoteric C
None of these D

Question # 17

Which one of the following is not an alkali metal?

Francium A
Caesium B
Rubidium C
Radium D

Question # 18

Group VII-A elements are called:

s-block elements A
p-block elements B
d-block elements C
f-block elements D

Question # 19

Which oxide is insouluble

Li₂O A
Na₂O B
K₂O C
BaO D

Question # 20

Which one o the following does not belong to alkaline earth metals?

Be A
Re B
Ba C
Rn D

Question # 21

Down's cell is used to prepare:

Sodium carbonate A
Sodium bicarbonate B
Sodium metal C
Sodium hydroxide D

Question # 22

Chlorophyll contains in it:

Li A
Na B
Mg C
Ca D

Question # 23

Acidic soils are neutralized by adding:

Plaster of paris A
Brine B
Lime C
Milk of magnesia D

Question # 24

p-block elements belong to group

I-A & II-A A
III-A to VIII-A B
I-B to X-B C
Lanthanides D

Question # 25

Lime is often used as an agent:

dehydrating A
hydrating B
oxidizing C
reducing D

Question # 26

The mineral CaSO₄.2H₂O has the general name

gypsum A
dolomite B
calcite C
epsom salt D

Question # 27

acidic soils are neutralized by adding

plaster of paris A
brine B
lime C
milk of magnesia D

Question # 28

Cement plaster is made by mixing plaster of paris with:

glue or oil A
gypsom B
glycol C
alum or borax D

Question # 29

s-block elements belong to groups

I-A & II-A A
III-A to VIII-A B
I-B to X-B C
Lanthanides D

Question # 30

Chlorophyll contains in it

Li A
Na B
Mg C
Ca D

Sr.#	Question	Answer
1	Which ion will have the maximum value of heat of hydration?	A. Na⁺ B. Cs⁺ C. Ba⁺ D. Mg⁺²
2	acidic soils are neutralized by adding	A. plaster of paris B. brine C. lime D. milk of magnesia
3	Which element is deposited at the cathode during the electrolysis of brine in Nelson's cell?	A. H₂ B. Na C. Cl₂ D. O₂
4	Gypsom added in cement is	A. 1% B. 2% C. 3% D. 4%
5	Chlorophyll contains in it	A. Li B. Na C. Mg D. Ca
6	s-block elements belong to groups	A. I-A & II-A B. III-A to VIII-A C. I-B to X-B D. Lanthanides
7	II-A group element are called:	A. s-block elements B. p-block elements C. d-block elements D. f-block elements
8	Group VII-A elements are called:	A. s-block elements B. p-block elements C. d-block elements D. f-block elements
9	Cement plaster is made by mixing plaster of paris with:	A. glue or oil B. gypsom C. glycol D. alum or borax
10	Down's cell is used to prepare:	A. Sodium carbonate B. Sodium bicarbonate C. Sodium metal D. Sodium hydroxide

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