Which of the following statements regarding soil is/are correct? 1.Alluvial soils are rich in nitrogen content. 2.Black soils are rich in iron and lime but deficient in nitrogen. 3.Laterite soils are rich in iron and aluminium but deficient in nitrogen and potassium. Select the correct answer using the code given below.

Consider the following statements
1. Podsolic soil is the soil that has development in humid temperate conditions usually under coniferous forest.
2. Red and black soils are deficient in lime, humus and nitrogen.
Which of the statements given above is/are correct?

A

Only 1

B

Only 2

C

Both 1 and 2

D

None of these

Solution of nitrogen in liquid iron may be assumed to follow Sievert's law. Nitrogen content of liquid iron. at 1873K in equilibrium with 1 atm pressure of nitrogen is measured as 0.044 (mass %). What will be the equilibrium nitrogen content in liquid iron (mass%), if nitrogen pressure is reduced to 0.25 atm?

A

0.011

B

0.022

C

0.088

D

0.176

Which of the following statements regarding red soils of India is/are correct?
1. The colour of the soil is-red due to ferric oxide content.
2. Red soils are rich in lime, humous and potash.
3. They are porous and have friable structure.

A

1 only

B

1 and 3 only

C

2 and 3 only

D

1, 2 and 3

Assertion A : Lime based mortars give higher ratio of brickwork strength to mortar strength as compared to non-lime mortar.
Reason R : Lime based mortars have lower bond strength as compared to non-lime mortars.
Select your answer according to the codes given below:

A

Both A and R is true and R is the correct explanation of A

B

Both A and R is true but R is not the correct explanation of A

C

A is true but R is false

D

A is false but R is true

Censider the following statements
1. Soils of Terai region are rich in nitrogen and organic matter but are deficient in phosphate.
2. Humid climate, marshy land and fertile soil are main features of the Terai region.
Which of the statements given above is/are correct?

A

Only 1

B

Only 2

C

Both 1 and 2

D

Neither 1 nor 2

Consider the following statements and choose the correct answer:
1. Soil gets heat energy from different sources such as solar radiation, decomposing organic matter and heat formed in the interior of earth
2. The temperature of soil is not affected by its colour and altitude of the land
3. Black soils absorb more heat than white soils
4. Sandy soils absorb more heat and radiate it out quickly at night than clay or loam soils

A

Only 1, 2 and 3 are true

B

Only 2, 3 and 4 are true

C

Only 1, 3 and 4 are true

D

Only 1, 2 and 4 are true

Consider the following statements and choose the correct answer:
1. Average density of soil is 2.65 gms. per ml.
2. The spaces present between soil particles in a given volume of soil are called pore spaces
3. Porosity of the soil decreases with the increase in the percentage of organic matter in the soil
4. Macro-pore spaces have little water holding capacity and allow free movement of moisture and air in the soil under normal condition

A

Only 1, 2 and 3 are true

B

Only 2, 3 and 4 are true

C

Only 1, 2 and 4 are true

D

Only 1, 3 and 4 are true

Study the following statements.
(i) Hydraulic lime is suitable for white washing,
(ii) Fat lime is suitable for whitewashing,
(iii) Hydraulic lime is suitable for making mortar,
(iv) Fat lime is suitable for making mortar.

A

(i) and (iv)

B

(ii) and (iii)

C

(i) and (ii)

D

(iii) and (iv)

Which of the statements given are correct about the soils of India :
1. High temperature during most of the year retards formation of humus
2. Soils which have humus require regular application of chemical fertilizers to remove nitrogen deficiency
3. Titanium salts in basalt impart black, colour to the soils of the Indian plateau
4. Red soils are confined to the peripheral areas of the Indian plateau

A

1 and 2

B

1, 3 and 4

C

2 and 3

D

2 and 4

Direction : Two statements I and II are given. These statement may be either independent causes or may be effects of independent causes or a common cause. One of these statements may be the effect of the other statements. Read both the statements and decide which of the following answer choice correctly depicts the relationship between these two statements. Mark answer :

I. The meteorological Department has issued a statement mentioning deficient rainfall during monsoon in many parts of the country.
II. The Government has lowered the revised estimated GDP growth from the level of earlier estimates.

A

Statement I is the cause and statement II is its effect.

B

Statement II is the cause and statement I is its effect.

C

Both the statements I and II are independent causes.

D

Both the statements I and II are effects of independent causes.

E

Both the statements I and II are effects of some common cause.