ECAT Pre Engineering Chemistry Chapter 13 MCQ Test With Answer

Question # 1

Which alkaline earth metal makes peroxide?

Be A
Mg B
Ca C
Ba D

Question # 2

All alkali metals react with acetylene to form acetylides except:

Li A
Na B
K C
Rb D

Question # 3

CO₂absorber used in breathing tanks is

K₂O₂ A
K₂O B
KO₂ C
Na₂O₂ D

Question # 4

Acidic soils are neutralized by adding:

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

Question # 5

Lime is often used as an agent:

dehydrating A
hydrating B
oxidizing C
reducing D

Question # 6

Chlorophyll contains in it

Li A
Na B
Mg C
Ca D

Question # 7

Gypsom added in cement is

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

Question # 8

the oxides of beryllium are:

acidic A
basic B
amphoteric C
None of these D

Question # 9

Carbonates of alkaline earth metals decomposes to respectgive metal

Oxides A
Nitrates B
Sulphates C
CO₂ D

Question # 10

acidic soils are neutralized by adding

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

Question # 11

Which one of the following is not an alkali metal?

Francium A
Caesium B
Rubidium C
Radium D

Question # 12

Transition elements belong to

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

Question # 13

Down's cell is used to prepare:

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

Question # 14

I-A group elements are called:

Alkali-metal A
alkaline earth metals B
Halogens C
Chalocogens D

Question # 15

All alkali metals react with acetylene to form acetylides except

Li A
Na B
K C
Rb D

Question # 16

II-A group element are called:

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

Question # 17

d-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 # 18

Lime is often used as an agent

dehydrating A
hydrating B
oxidizing C
reducing D

Question # 19

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 # 20

Which is insoluble carbonate?

KCO₃ A
CaCO₃ B
Na₂CO₃ C
K₂CO₃ D

Question # 21

Which one is alkaline earth metal?

Sodium A
Beryllium B
Potassium C
Lithium D

Question # 22

The mineral CaSO₄.2H₂O has the general name

gypsum A
dolomite B
calcite C
epsom salt D

Question # 23

The strong alkaline solution in water is of metal:

Potassium A
Sodium B
Lithium C
Magnesium D

Question # 24

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

Na⁺ A
Cs⁺ B
Ba⁺ C
Mg⁺² D

Question # 25

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

Be A
Re B
Ba C
Rn D

Question # 26

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 # 27

Milk of lime is

MgO A
CaO B
Ca(OH)₂ C
Mg(OH)₂ D

Question # 28

Carbonates of alkaline earth metals decomposes to respective metal

oxides A
nitrates B
sulphates C
CO₂ D

Question # 29

Which are being formed by alkali metals?

oxides A
nitrides B
carbides C
peroxides D

Question # 30

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

Sr.#	Question	Answer
1	Which is insoluble carbonate?	A. KCO₃ B. CaCO₃ C. Na₂CO₃ D. K₂CO₃
2	Which ion will have the maximum value of heat of hydration?	A. Na⁺ B. Cs⁺ C. Ba⁺ D. Mg⁺²
3	Plaster of paris is mixed with water, the expansion in volume is:	A. 1% B. 2% C. 3% D. 4%
4	Down's cell is used to prepare:	A. Sodium carbonate B. Sodium bicarbonate C. Sodium metal D. Sodium hydroxide
5	acidic soils are neutralized by adding	A. plaster of paris B. brine C. lime D. milk of magnesia
6	Which are being formed by alkali metals?	A. oxides B. nitrides C. carbides D. peroxides
7	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
8	Chile saltpetre has the chemical formule	A. NaNO₃ B. KNO₃ C. Na₂B₄O₇ D. Na₂CO₃.H₂O
9	The mineral CaSO₄.2H₂O has the general name	A. gypsum B. dolomite C. calcite D. epsom salt
10	All alkali metals react with acetylene to form acetylides except:	A. Li B. Na C. K D. Rb

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