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Worksheets19/12/25-Civil war-OVERSEER GRADE 1-Irrigation intro. part 1&2
Total questions: 10
Worksheet time: 10mins
Name
Class
Date
1.
Irrigation is best defined as
a)
Supplying water naturally by rainfall
b)
Supplying water artificially to agricultural land
c)
Draining excess water from fields
d)
Conserving soil moisture only
2.
The main objective of an irrigation system is to
a)
Prevent soil erosion
b)
Increase groundwater table
c)
Increase food production
d)
Improve navigation
3.
Irrigation becomes necessary when
a)
Rainfall is uniform and adequate
b)
Crops require water only at sowing
c)
Rainfall is less or non uniform
d)
Only food crops are grown
4.
Which of the following is an example of a rainfed crop
a)
Rice
b)
Wheat
c)
Rubber
d)
Sugarcane
5.
Flood or inundation irrigation is classified under:
a)
Lift irrigation
b)
Flow irrigation
c)
Direct pumping
d)
none
6.
Tube wells and bore wells are classified under
a)
Surface sources
b)
Sub surface sources
c)
Non conventional sources
d)
Artificial surface sources
7.
According to Planning Commission classification a major irrigation project has a CCA of
a)
Less than 2000 ha
b)
2000 to 10000 ha
c)
More than 10000 ha
d)
Exactly 5000 ha
8.
Minor irrigation projects generally use
a)
River water
b)
Reservoir storage
c)
Surface water only
d)
Groundwater sources
9.
The irrigation method used in more than 75 percent of irrigated land in India is
a)
Sub surface irrigation
b)
Drip irrigation
c)
Surface irrigation
d)
Sprinkler irrigation
10.
In sub surface irrigation water reaches plant roots mainly through
a)
Surface runoff
b)
Flooding
c)
Capillary action
d)
None
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