Worksheets14/01/26-overseer grade3-irrigation
Total questions: 10
Worksheet time: 5mins
Name
Class
Date
1.
According to the Planning Commission of India, an irrigation project is classified as a “Major Irrigation Project” if its Culturable Command Area (CCA) is:
a)
Less than 2,000 hectares
b)
Between 2,000 and 10,000 hectares
c)
Above 10,000 hectares
d)
Above 5,000 hectares
2.
In subsurface irrigation, water is made available to the root zone of crops mainly through which physical process?
a)
Infiltration
b)
Capillary action
c)
Surface runoff
d)
Deep percolation
3.
Which system of perennial irrigation is best suited for non-perennial (seasonal) rivers to ensure water availability during dry seasons?
a)
Direct Irrigation
b)
Inundation Irrigation
c)
Storage Irrigation
d)
Lift Irrigation
4.
The “Sewage Sickness” phenomenon in Broad Irrigation is primarily caused by:
a)
Excessive nitrogen in crops
b)
Soil pores getting clogged and turning anaerobic
c)
Lack of NPK nutrients in effluent
d)
High evaporation rates on the field
5.
Assertion (A): Lift irrigation is generally less economical than flow irrigation.
Reason (R): In lift irrigation, water is lifted from a lower level to a higher level using mechanical or manual power.
a)
Both A and R are true and R is the correct explanation of A
b)
Both A and R are 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
6.
Which of the following is a characteristic disadvantage of Artificial Subsurface Irrigation?
a)
High evaporation loss
b)
Low water use efficiency
c)
High initial cost and risk of pipe clogging
d)
Increased weed growth
7.
In the context of irrigation engineering, what does the term “GCA” stand for?
a)
General Command Area
b)
Gross Command Area
c)
Geological Command Area
d)
Groundwater Command Area
8.
Assertion (A): Direct irrigation is best suited for perennial rivers.
Reason (R): Direct irrigation utilizes a dam to store large quantities of water for use during dry months.
a)
Both A and R are true
b)
Both A and R are false
c)
A is true but R is false
d)
A is false but R is true
9.
Which of the following irrigation methods covers more than 75% of the irrigated land in India?
a)
Subsurface irrigation
b)
Surface irrigation
c)
Drip irrigation
d)
Sprinkler irrigation
10.
Natural subsurface irrigation often occurs due to seepage from:
a)
Concrete-lined canals
b)
Unlined canals
c)
Deep tube wells
d)
Rainwater harvesting tanks
100 %
