ECAT Pre Engineering Chemistry Chapter 13 MCQ Test With Answer

Question # 1

Transition elements belong to

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

Question # 2

Down's cell is used to prepare:

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

Question # 3

alkaline metal have electrons in s-orbitals:

One A
Two B
three C
Four D

Question # 4

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 # 5

Alkali metals have electrons in s-orbital:

one A
two B
three C
Four D

Question # 6

Which oxide is insouluble

Li₂O A
Na₂O B
K₂O C
BaO D

Question # 7

Carbonates of alkaline earth metals decomposes to respective metal

oxides A
nitrates B
sulphates C
CO₂ D

Question # 8

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 # 9

acidic soils are neutralized by adding

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

Question # 10

Acidic soils are neutralized by adding:

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

Question # 11

Which are being formed by alkali metals?

oxides A
nitrides B
carbides C
peroxides D

Question # 12

the oxides of beryllium are:

acidic A
basic B
amphoteric C
None of these D

Question # 13

Diaphragm cell is used to prepare

sodium A
sodium hydroxide B
calcium C
magnesium D

Question # 14

The mineral CaSO₄.2H₂O has the general name

gypsum A
dolomite B
calcite C
epsom salt D

Question # 15

Which alkaline earth metal makes peroxide?

Be A
Mg B
Ca C
Ba D

Question # 16

Lime is often used as an agent:

dehydrating A
hydrating B
oxidizing C
reducing D

Question # 17

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

Be A
Ra B
Ba C
Rn D

Question # 18

Maximum shielding effect is observing in

Li A
Be B
Mg C
Ca D

Question # 19

Cement plaster is made by mixing plaster of paris with

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

Question # 20

Which one is alkali metal in them?

Rubidium A
Magnesium B
Calcium C
Barium D

Question # 21

The element caesium bears resemblance with:

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

Question # 22

All alkali metals react with acetylene to form acetylides except

Li A
Na B
K C
Rb D

Question # 23

Milk of lime is

MgO A
CaO B
Ca(OH)₂ C
Mg(OH)₂ D

Question # 24

Arabic word "alkali" means:

The ashes A
the sour B
The fragrant C
Caustic D

Question # 25

CO₂absorber used in breathing tanks is

K₂O₂ A
K₂O B
KO₂ C
Na₂O₂ 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

Which one of the following is not an alkali metal?

Francium A
Caesium B
Rubidium C
Radium D

Question # 28

Which are being formed by alakli metals?

oxides A
nitrides B
carbides C
peroxides D

Question # 29

Chlorophyll contains in it

Li A
Na B
Mg C
Ca D

Question # 30

Gypsom added in cement is:

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

Sr.#	Question	Answer
1	Which alkaline earth metal makes peroxide?	A. Be B. Mg C. Ca D. Ba
2	Plaster of paris is mixed with water, the expansion in volume is:	A. 1% B. 2% C. 3% D. 4%
3	Which one is alkaline earth metal?	A. Sodium B. Beryllium C. Potassium D. Lithium
4	Maximum shielding effect is observing in	A. Li B. Be C. Mg D. Ca
5	Cement plaster is made by mixing plaster of paris with	A. glue or oil B. gypson C. glycol D. alum or borax
6	The mineral CaSO₄.2H₂O has the general name	A. gypsum B. dolomite C. calcite D. epsom salt
7	All alkali metals react with acetylene to form acetylides except:	A. Li B. Na C. K D. Rb
8	All alkali metals react with acetylene to form acetylides except	A. Li B. Na C. K D. Rb
9	Arabic word "alkali" means:	A. The ashes B. the sour C. The fragrant D. Caustic
10	Group VII-A elements are called:	A. s-block elements B. p-block elements C. d-block elements D. f-block elements
11	Which ion will have the maximum value of heat of hydration?	A. Na⁺ B. Cs⁺ C. Ba⁺ D. Mg⁺²
12	Gypsom added in cement is:	A. 1% B. 2% C. 3% D. 4%
13	Which are being formed by alkali metals?	A. oxides B. nitrides C. carbides D. peroxides
14	Transition elements belong to	A. I-A & II-A B. III-A to VIII-A C. I-B to X-B D. Lanthanides
15	d-block elements belong to groups	A. I-A & II-A B. III-A to VIII-A C. I-B to X-B D. Lanthanides
16	Milk of lime is	A. MgO B. CaO C. Ca(OH)₂ D. Mg(OH)₂
17	Which one of the following is not an alkali metal?	A. Francium B. Caesium C. Rubidium D. Radium
18	Carbonates of alkaline earth metals decomposes to respective metal	A. oxides B. nitrates C. sulphates D. CO₂
19	CO₂absorber used in breathing tanks is	A. K₂O₂ B. K₂O C. KO₂ D. Na₂O₂
20	Which is plaster of paris?	A. CaSO₄.H₂O B. (CaSO₄)₂.H₂O C. CaSO₄.2H₂O D. CaSO₄.3H₂O
21	Which are being formed by alakli metals?	A. oxides B. nitrides C. carbides D. peroxides

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