Question # 1

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

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N, S, P

N, Ca, P

N, P, K

N, K, C

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

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Medicines

Cement

Fertilizers

Paper

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

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agrarian

industrial

nuclear

economically strong

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

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Rose

Sun flower

Papyrus

Water Hyacinth

Cement is a combination of mainly

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calcarious

argillaceous

calcarious and argillaceous

Al₂O₃

Which is not a calcarious material

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lime

clay

marble

marine shell

Major fertilizers with micro—nutrients are

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Nitrogeneous

Phosphatic

Potash

a,b,c

Ammonia contains nitrogen in it

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46%

50%

80%

82%

Which is a component of micro nutrient?

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N

Zn

P

K

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

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4

3

2

5

Setting time of cement is controlled by adding

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Epsom

Gypsom

CaCO₃

CaCl₂

A colloidal gel is

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3cA, Al₂O₃

CaSO₂.2H₂O

3CaAl₂O₃.3CaSO₄.2H₂O

3Ca.Al₂O₃.6H₂O

Ammonia is injected tinder the soil surface

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1 feet

6 inches

6 feet

inches

At present cement plants in Pakistan are

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ten

twenty two

four

twenty four

Which fills the space between needles in cement setting?

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Ca(OH)₂

Al(OH)₃

CaCO₃

MgSO₄

Which is a component of macronutrient?

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Zn

N

Mo

Cl

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

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good seeds

pesticides

fertilizers

all

Gypsom added in the cement is

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5%

10%

15%

20%

The nitrogen present in some fertilizers helps plant to

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fight against diseases

Produce fat

Undergo photosynthesis

produce protein

Major component in cement is

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SiO₂

Lime

Al₂O₃

MgO

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

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ten

twenty two

four

twenty four

Urea has concentration when prepared before prilling

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46%

82%

99.7%

100%

After chlorination, the pulp is washed at

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20°C

30°C

40°C

60°C

Ammonium nitrate fertilizer is not used for which crop?

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Cotton

Wheat

Sugar-cane

Paddy rice

Which is not nitrogeneous fertilizers?

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(NH₄)₂HPO₄

NH₄NO₃

urea

Calcium phosphate

Composition of clay in cement is

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25%

50%

75%

80%

Pakistan in the beginning was a country

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industrial

chemical

agrarian

technological

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

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cotton

Bagasse

Popular

Rice straw

75% plant nutrients are present in the fertilizer

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urea

NH₄NO₃

NH₃

(NH₄)₂HPO₄

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

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600^oC

8000^oC

1000^oC

1200^oC

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