Quiz 2

#1. Capacity of soil to produce crops with specific management is known as _________?

LCC

Productivity

Fertility

LUE

#2. What is the diameter of soil particles called gravel?

20mm

2-20 mm

0.002mm

2mm

#3. Application of silt to soil is called ________?

Marling

Linning

Wrapping

Manuring

#4. Which of the soil structure hinder downward movement of water?

Platy

Blocky

Granular

Prismatic

#5. The latent heat of sublimation of water is _________?

680 cal/g

540 cal/g

80 cal/g

900 cal/g

#6. General value of surface tension of water is ______?

7.2 dynes/cm

720 dynes/cm

72 dynes/cm

7200 dynes/cm

#7. The amount of heat required to increase the temperature of one gram of substance by 1 degree Celsius is called ________??

Specific heat

Heat capacity

Latent heat

Thermal conductivity

#8. Optimum soil temperature for nodulation in legumes?

34 degree celcius

10 degree celcius

24 degree celcius

20 degree celcius

#9. The oxygen content of soil must be above ________% for crop growth?

20

5

25

10

#10. Specific surface area for silt particles is _________?

0.1 m2/g

1 m2/g

1000 m2/g

10 m2/g

#11. The main process of gases exchange between soil and atmosphere is called _______?

mass flow

Conduction

Diffusion

Vapour pressure

#12. Number of pores approximately highest in which type of soil?

Clayee

Loamy

Sandy

Silty

#13. which Electrode used for measuring ODR?

Silver

Gold

Graphite

Platinum

#14. Which of the following horizon is absent in cultivated soil?

B-horizon

A-horizon

O-horizon

C-horizon

#15. Which of the following horizons together called true soil or solum?

B+C

A+B+C

O+A

A+B

#16. Relative purity and strength of dominant spectral colour in Munsell colour chart?

Chroma

Hue

Spectrum

Value

#17. Optimum pH for P availability is ________?

4 - 6

7 - 9

6 - 7

6 - 8

#18. Which value does not coincide with alkali soil?

ESP > 15

> 8.5 pH

None

> 4 EC

#19. Gypsum equivalent of sulphur is ________?

1.29

0.19

0.85

0.57

#20. The process of dealkalization is also called _______?

Solonization

Pozolization

Solodization

Alkalization

AgriScan

Results