1
What is the SI unit of Pressure?
Pascal (Pa)
2
Most of the exchange of gases in soil is due to-
Diffusion
3
Most outstanding green manure crop-
Sun Hemp
4
Diameter of clay particle is-
less than 0.002 mm
5
Which soil Structure is best for cultivation?
Crumby Structure
6
Particle density of most of the soil is?
2.65 g/cc (grams per cubic centimeter)
7
Soils having more than 20% organic matter known as?
Organic Soils
8
Bulk density of general soil?
1.33 g/cc ( grams per cubic centimeter)
9
Black soils are best suitable for-
Dry Land Agriculture
10
Silicon is essential for-
Rice, Maize
11
Who is the father of Soil Science?
V.V Dokuchaev
12
First phase of Soil formation is?
Weathering
13
Browning in cauliflower is due to?
Boron deficiency
14
The direction of wind is measured by-
Wind Vane
15
The velocity of wind is measured by-
Anemometer
16
Golden rice is a rich source of?
Vitamin A
17
What is the optimum PH soil for rice cultivation?
4-6
18
What is the study of desert called?
Eremology
19
What is the botanical name of 'Rice'?
Oryza Sativa
20
From where the Origin of Sugarcane?
New Guinea