Fertilizer Technology Mcqs

This set of Mechanical Engineering Multiple Choice Questions & Answers (MCQs) focuses on “ Fertilizer Technology ”. These Mcqs are chosen from a collection of most authoritative and best reference books on Chemical Engineering. Our aim is to prepare an individual for competitive exams like NTS, GAT, ECAT, University and College entrance exams, Jobs and interviews. One should practice our MCQS to assimilate Fertilizer Technology comprehensively.

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1.
Nitrogenous fertilizer is required

During early stages of plant growth to promote development of stems and leaves

To accelerate seeding or fruit formation in later stages of growth

For the development of the starches of potatoes and grains

For the development of the sugar of fruits and vegetables and the fibrous material of plants

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2.
Phosphatic fertilizer is required

During early stages of plant growth to promote development of stems and leaves

To stimulate early growth and accelerate seeding or fruit formation in later stages of growth

For the development of the starches of potatoes and grains

For the development of the sugar of fruits and vegetables and the fibrous material of plants

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3.
Potassic fertilizer is required

For the development of the starches of potatoes and grains

For the development of the sugar of fruits and vegetables

For the development of the fibrous material of plants

All of these answers

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4.
Excessive application of synthetic fertilizers often causes shrivelling of the roots and wilting of the plant. This is because

The soil becomes too acidic

The soil becomes too alkaline

The osmotic pressure of the soil water becomes higher than that of the plant sap

The osmotic pressure of the soil water becomes less than that of the plant sap

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5.
Fertilizer value of a nitrogenous fertilizer is expressed in terms of its

N content

NH3 content

HNO3 content

NO content

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8.
Mixed fertilizers contain three principal elements (nitrogen phosphorus and potassium). 5-10-5 mixed fertilizer contains

5 wt. % P2O5 10%N 5% K2O

5 wt. % N 10% P2O5 5% K2O

5 wt. % N 10% P2O5 85% K2O

10 wt. % N 10% P2O5 5% K2O

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9.
NPK fertilizer is a

Nitrogenous fertilizer

Phosphatic fertilizer

Potassic fertilizer

Mixed fertilizer

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10.
The nitrogenous fertilizer with highest percentage of nitrogen is

Urea

Ammonium sulphate

Ammonium nitrate

Calcium nitrate

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11.
Which one of the following substances is used as a nitrogenous fertilizer as a weed killer in the onion fields and for correcting acidic soils?

Urea

Basic slag

Superphosphate of lime

Calcium cyanamide

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12.
The best fertilizer for rice paddies is

Urea

Ammonium sulphate

Superphosphate

Calcium ammonium nitrate

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13.
Which one of the following compounds is not used as fertilizer?

Urea

Dismmonium phosphate

Ammonium nitrate

Calcium phosphate

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14.
In the Habers process for the manufacture of ammonia

Finely divided iron is used as a catalyst

Finely divided molybdenum is used as a catalyst

Finely divided nickel is used as a catalyst

No catalyst is required

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15.
If a mixture containing 3 moles of hydrogen and 1 mole of nitrogen is converted completely in ammonia the ration of initial and final volumes at the same temperature and pressure would be

Three : one

Two : one

One : three

One : two

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