Agriculture Mcqs Practice Test

Question 1

The percentage of calcium content in single superphosphate?

Accepted Answer

C. 19.5%

Question 2

The tension of the water at the upper plastic limit is equivalent to pF value:

Accepted Answer

D. 0.5

Question 3

Clay and humus particles are referred to as colloids and are less than 0.002mm. Due to their small size, colloids have ________________ surface area which provides surface for adsorption, catalysis, precipitation and microbial colonization:

Accepted Answer

B.\xa0Extremely high

Question 4

Soil samples are collected:

Accepted Answer

D. None of these

Question 5

_________ erosion is the removal of a thin layer of soil by water acting over the whole surface. This type of erosion damaged very fertile lands located on slopes, some of which have been eroded to a depth of about 15 cm.

Accepted Answer

C. Sheet erosion

Question 6

In Pakistan there is general deficiency of rainfall. It varies from 125 mm annually in upper Sindh to about 900 mm in the sub-mountainous of northern Pakistan. In Balochistan the mean annual rainfall is about 200 mm, diminishing to ________ mm in the desert of Kharan:

Accepted Answer

C. <50 mm

Question 7

Losses of soil water not includes_________?

Accepted Answer

C.\xa0Hydroponics loss

Question 8

The relative abundance of three types of rocks ( igneous-metamorphic- sedimentary) in the earth’s crust is_________?

Accepted Answer

B. 64.7 % – 27.4 % – 7.9 %

Question 9

Oxygen and Silicon together comprise approximately ______ %of the earth crust?

Accepted Answer

C. 75 %

Question 10

Potassium (K) occurs as a constituent of the earth’s crust in the proportion of_________?

Accepted Answer

B. 2.3 %

Question 11

In Pakistan, Nitrophos is manufactured in_________?

Accepted Answer

A. Multan

Question 12

All the SSP and some nitrophos are are manufactured locally by the National Fertilizer Corporation (NFC): SSP at_________?

Accepted Answer

D. All of these

Question 13

In Pakistan, the major phosphatic fertilizers are:

Accepted Answer

D. All of Above

Question 14

Soil Organic Matter (SOM) serves not only as a reservoir of all the required plant nutrients, but it:

Accepted Answer

D. All of these

Question 15

Humus generally refers to the decomposed organic residues which have undergone a series of degradation and synthesis cycles. The humic substances consist of a series of highly acidic, yellow to black coloured, high molecular weight compounds __________________, which can be separated using different extraction procedures:

Accepted Answer

C. both A & B

Question 16

Which of the following is a component of nucleic acid and protein:

Accepted Answer

C. N

Question 17

Rhizoplane is________?

Accepted Answer

B. Root surface

Question 18

Which chemical used to prevent evaporation from surface of water in water bodies?

Accepted Answer

A. Cetyle alcohol

Question 19

Composition of igneous rock is determined by___________?

Accepted Answer

B. Composition of molten magma

Question 20

Who will decompose organic matter first:

Accepted Answer

D. Fungi imperfecti