Agriculture - Mock Test 43

Question 421

The main source of heat energy for soil is?

A) Infra red radiations B) Ultra violet radiations C) Solar radiations D) None of the above

---

No Details

Question 422

The main characteristics, which render the alkali soils unfavourable for crop growth is?

A) Excessive concentration of soluble salts B) Low pH C) Poor physical conditions D) All of the above

---

No Details

Question 423

The losses of ammonia usually become greater with ______ soil?

A) Increase in soil pH B) Decrease in soil pH C) Increase in soil temperature D) Increase in soil calcium

---

No Details

Question 424

The lithosphere is mainly made up of?

A) Igneous rocks B) Sedimentary rocks C) Metamorphic rocks D) All of rocks

---

No Details

Question 425

The light coloured soils are?

A) High in Fe and Mn B) Low in fe and Mn C) Negligible in Fe and Mn D) Not known

---

No Details

Question 426

The inherent capacity of a soil to supply nutrients to plants in available and balanced proportion can be represented by?

A) Soil productivity B) Soil taxonomy C) Edaphology D) Soil fertility

---

No Details

Question 427

The important function of nitrogen is?

A) To increase growth and green colour in plants B) To increase root development C) To help in starch formation D) To increase disease resistance

---

No Details

Question 428

The illuviation zone of soil is?

A) Leaching B) Accumulation C) Hard crust D) None of above

---

No Details

Question 429

The horizons, which make up the profile of a forest soil would include?

A) A, B and C B) A, C and O C) B and O D) A, B, C and O

---

No Details

Question 430

The highest nitrogen content among the commonly used nitrogenous fertilizers is embodied by?

A) Anhydrous ammonia B) Urea C) Ammonium nitrate D) Calcium ammonium nitrate

---

No Details