ECAT Pre Engineering Chemistry Chapter 26 MCQ Test With Answer

Question # 1

Setting time of cement is controlled by adding

Epsom A
Gypsom B
CaCO₃ C
CaCl₂ D

Question # 2

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 # 3

Which fills the space between needles in cement setting?

Ca(OH)₂ A
Al(OH)₃ B
CaCO₃ C
MgSO₄ D

Question # 4

Which is a component of macronutrient?

Zn A
N B
Mo C
Cl D

Question # 5

Ammonium nitrate fertilizer is not used for which crop?

Cotton A
Wheat B
Sugar-cane C
Paddy rice D

Question # 6

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 # 7

Which is not a calcarious material

lime A
clay B
marble C
marine shell D

Question # 8

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 # 9

Pakistan in the beginning was a country

industrial A
chemical B
agrarian C
technological D

Question # 10

At present cement plants in Pakistan are

ten A
twenty two B
four C
twenty four D

Question # 11

Cement is a combination of mainly

calcarious A
argillaceous B
calcarious and argillaceous C
Al₂O₃ D

Question # 12

75% plant nutrients are present in the fertilizer

urea A
NH₄NO₃ B
NH₃ C
(NH₄)₂HPO₄ D

Question # 13

After chlorination, the pulp is washed at

20°C A
30°C B
40°C C
60°C D

Question # 14

Which is not nitrogeneous fertilizers?

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

Question # 15

A colloidal gel is

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

Question # 16

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

Medicines A
Cement B
Fertilizers C
Paper D

Question # 17

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

4 A
3 B
2 C
5 D

Question # 18

Which is a component of micro nutrient?

N A
Zn B
P C
K D

Question # 19

Major fertilizers with micro—nutrients are

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

Question # 20

Gypsom added in the cement is

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

Question # 21

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

agrarian A
industrial B
nuclear C
economically strong D

Question # 22

Ammonia contains nitrogen in it

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

Question # 23

Composition of clay in cement is

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

Question # 24

Ammonia is injected tinder the soil surface

1 feet A
6 inches B
6 feet C
inches D

Question # 25

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

Rose A
Sun flower B
Papyrus C
Water Hyacinth D

Question # 26

The nitrogen present in some fertilizers helps plant to

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

Question # 27

Major component in cement is

SiO₂ A
Lime B
Al₂O₃ C
MgO D

Question # 28

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

ten A
twenty two B
four C
twenty four D

Question # 29

Urea has concentration when prepared before prilling

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

Question # 30

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

cotton A
Bagasse B
Popular C
Rice straw D

Sr.#	Question	Answer
1	At present cement plants in Pakistan are	A. ten B. twenty two C. four D. twenty four
2	Urea has concentration when prepared before prilling	A. 46% B. 82% C. 99.7% D. 100%
3	Which woody raw material is used for the manufacture of paper pulp?	A. cotton B. Bagasse C. Popular D. Rice straw
4	Composition of clay in cement is	A. 25% B. 50% C. 75% D. 80%
5	Major component in cement is	A. SiO₂ B. Lime C. Al₂O₃ D. MgO
6	After chlorination, the pulp is washed at	A. 20°C B. 30°C C. 40°C D. 60°C
7	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
8	The word paper is derived from the name of which seedy plant?	A. Rose B. Sun flower C. Papyrus D. Water Hyacinth
9	Which is a component of micro nutrient?	A. N B. Zn C. P D. K
10	How many are the zones through which the charge passes in a rotary kiln?	A. 4 B. 3 C. 2 D. 5

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