ECAT Pre Engineering Chemistry Chapter 26 MCQ Test With Answer

Question # 1

Urea has concentration when prepared before prilling

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

Question # 2

After chlorination, the pulp is washed at

20°C A
30°C B
40°C C
60°C D

Question # 3

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 # 4

Ammonia contains nitrogen in it

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

Question # 5

Pakistan in the beginning was a country

industrial A
chemical B
agrarian C
technological D

Question # 6

Composition of clay in cement is

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

Question # 7

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 # 8

At present cement plants in Pakistan are

ten A
twenty two B
four C
twenty four D

Question # 9

75% plant nutrients are present in the fertilizer

urea A
NH₄NO₃ B
NH₃ C
(NH₄)₂HPO₄ D

Question # 10

Which is not a calcarious material

lime A
clay B
marble C
marine shell D

Question # 11

Ammonia is injected tinder the soil surface

1 feet A
6 inches B
6 feet C
inches D

Question # 12

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 # 13

Cement is a combination of mainly

calcarious A
argillaceous B
calcarious and argillaceous C
Al₂O₃ 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

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

4 A
3 B
2 C
5 D

Question # 16

Which is a component of micro nutrient?

N A
Zn B
P C
K D

Question # 17

Which is a component of macronutrient?

Zn A
N B
Mo C
Cl D

Question # 18

Which fills the space between needles in cement setting?

Ca(OH)₂ A
Al(OH)₃ B
CaCO₃ C
MgSO₄ D

Question # 19

Setting time of cement is controlled by adding

Epsom A
Gypsom B
CaCO₃ C
CaCl₂ D

Question # 20

Major component in cement is

SiO₂ A
Lime B
Al₂O₃ C
MgO D

Question # 21

Major fertilizers with micro—nutrients are

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

Question # 22

Ammonium nitrate fertilizer is not used for which crop?

Cotton A
Wheat B
Sugar-cane C
Paddy rice D

Question # 23

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

cotton A
Bagasse B
Popular C
Rice straw D

Question # 24

Which is not nitrogeneous fertilizers?

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

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

agrarian A
industrial B
nuclear C
economically strong D

Question # 27

Gypsom added in the cement is

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

Question # 28

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

Medicines A
Cement B
Fertilizers C
Paper D

Question # 29

The nitrogen present in some fertilizers helps plant to

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

Question # 30

A colloidal gel is

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

Sr.#	Question	Answer
1	Ammonium nitrate fertilizer is not used for which crop?	A. Cotton B. Wheat C. Sugar-cane D. Paddy rice
2	Major fertilizers with micro—nutrients are	A. Nitrogeneous B. Phosphatic C. Potash D. a,b,c
3	Setting time of cement is controlled by adding	A. Epsom B. Gypsom C. CaCO₃ D. CaCl₂
4	After chlorination, the pulp is washed at	A. 20°C B. 30°C C. 40°C D. 60°C
5	During the manufacturing process of cement the temperature of the decomposition zone goes up to	A. 600^oC B. 8000^oC C. 1000^oC D. 1200^oC
6	At present cement plants in Pakistan are	A. ten B. twenty two C. four D. twenty four
7	A colloidal gel is	A. 3cA, Al₂O₃ B. CaSO₂.2H₂O C. 3CaAl₂O₃.3CaSO₄.2H₂O D. 3Ca.Al₂O₃.6H₂O
8	How many are the zones through which the charge passes in a rotary kiln?	A. 4 B. 3 C. 2 D. 5
9	To meet the due need of food by increasing population we must use in agriculture	A. good seeds B. pesticides C. fertilizers D. all
10	Which woody raw material is used for the manufacture of paper pulp?	A. cotton B. Bagasse C. Popular D. Rice straw

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