ECAT Pre Engineering Chemistry Chapter 26 MCQ Test With Answer

Question # 1

Which fills the space between needles in cement setting?

Ca(OH)₂ A
Al(OH)₃ B
CaCO₃ C
MgSO₄ D

Question # 2

Which is a component of macronutrient?

Zn A
N B
Mo C
Cl D

Question # 3

Urea has concentration when prepared before prilling

46% A
82% B
99.7% C
100% D

Question # 4

75% plant nutrients are present in the fertilizer

urea A
NH₄NO₃ B
NH₃ C
(NH₄)₂HPO₄ D

Question # 5

Which is a component of micro nutrient?

N A
Zn B
P C
K D

Question # 6

Setting time of cement is controlled by adding

Epsom A
Gypsom B
CaCO₃ C
CaCl₂ D

Question # 7

Which is not a calcarious material

lime A
clay B
marble C
marine shell D

Question # 8

The nitrogen present in some fertilizers helps plant to

fight against diseases A
Produce fat B
Undergo photosynthesis C
produce protein D

Question # 9

To meet the due need of food by increasing population we must use in agriculture

good seeds A
pesticides B
fertilizers C
all D

Question # 10

Cement is a combination of mainly

calcarious A
argillaceous B
calcarious and argillaceous C
Al₂O₃ D

Question # 11

Major component in cement is

SiO₂ A
Lime B
Al₂O₃ C
MgO D

Question # 12

Composition of clay in cement is

25% A
50% B
75% C
80% D

Question # 13

Major fertilizers with micro—nutrients are

Nitrogeneous A
Phosphatic B
Potash C
a,b,c D

Question # 14

The cement plants in west Pakistan at the time of creation were

ten A
twenty two B
four C
twenty four D

Question # 15

Which three elements are needed for the healthy growth of plants?

N, S, P A
N, Ca, P B
N, P, K C
N, K, C D

Question # 16

A colloidal gel is

3cA, Al₂O₃ A
CaSO₂.2H₂O B
3CaAl₂O₃.3CaSO₄.2H₂O C
3Ca.Al₂O₃.6H₂O D

Question # 17

Gypsom added in the cement is

5% A
10% B
15% C
20% D

Question # 18

How many are the zones through which the charge passes in a rotary kiln?

4 A
3 B
2 C
5 D

Question # 19

Which woody raw material is used for the manufacture of paper pulp?

cotton A
Bagasse B
Popular C
Rice straw D

Question # 20

After chlorination, the pulp is washed at

20°C A
30°C B
40°C C
60°C D

Question # 21

During the manufacturing process of cement the temperature of the decomposition zone goes up to

600^oC A
8000^oC B
1000^oC C
1200^oC D

Question # 22

Ammonia is injected tinder the soil surface

1 feet A
6 inches B
6 feet C
inches D

Question # 23

The word paper is derived from the name of which seedy plant?

Rose A
Sun flower B
Papyrus C
Water Hyacinth D

Question # 24

At present cement plants in Pakistan are

ten A
twenty two B
four C
twenty four D

Question # 25

Pakistan at the time of existence in 1947 was a country:

agrarian A
industrial B
nuclear C
economically strong D

Question # 26

Ammonium nitrate fertilizer is not used for which crop?

Cotton A
Wheat B
Sugar-cane C
Paddy rice D

Question # 27

Which is not nitrogeneous fertilizers?

(NH₄)₂HPO₄ A
NH₄NO₃ B
urea C
Calcium phosphate D

Question # 28

Ammonia contains nitrogen in it

46% A
50% B
80% C
82% D

Question # 29

The strength of economy of a country is measured with respect to production of

Medicines A
Cement B
Fertilizers C
Paper D

Question # 30

Pakistan in the beginning was a country

industrial A
chemical B
agrarian C
technological D

Sr.#	Question	Answer
1	How many are the zones through which the charge passes in a rotary kiln?	A. 4 B. 3 C. 2 D. 5
2	Which is a component of micro nutrient?	A. N B. Zn C. P D. K
3	Ammonia contains nitrogen in it	A. 46% B. 50% C. 80% D. 82%
4	Cement is a combination of mainly	A. calcarious B. argillaceous C. calcarious and argillaceous D. Al₂O₃
5	Composition of clay in cement is	A. 25% B. 50% C. 75% D. 80%
6	Urea has concentration when prepared before prilling	A. 46% B. 82% C. 99.7% D. 100%
7	After chlorination, the pulp is washed at	A. 20°C B. 30°C C. 40°C D. 60°C
8	Which fills the space between needles in cement setting?	A. Ca(OH)₂ B. Al(OH)₃ C. CaCO₃ D. MgSO₄
9	Which woody raw material is used for the manufacture of paper pulp?	A. cotton B. Bagasse C. Popular D. Rice straw
10	Which three elements are needed for the healthy growth of plants?	A. N, S, P B. N, Ca, P C. N, P, K D. N, K, C

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