Water Management MCQs with Answers | Agriculture – Page 10

Question 181 Water Management

What is a flow whose streamlines can be represented by a straight line called?

Correct answer A. One-dimensional flow

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Question 182 Water Management

What is a flow called in which the quantity of liquid passing per second remains constant?

Correct answer A. Steady flow

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Question 183 Water Management

Which principle states that a body immersed wholly or partly in water is pushed up by a force equal to the weight of water it displaces?

Correct answer C. Archimedes' principle

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Question 184 Water Management

What is the water force per metre length on a vertical wall, where w is the unit weight and H the depth?

Correct answer D. wH²/2

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Question 185 Water Management

Which property of a liquid controls its rate of flow?

Correct answer A. Viscosity

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Question 186 Water Management

Why does mercury in a glass tube form a convex surface at the top?

Correct answer C. Surface Tension

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Question 187 Water Management

Why is the capillary rise experiment performed in a glass tube of small diameter?

Correct answer D. It is easily visible

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Question 188 Water Management

What is the mass per unit volume of a liquid at standard temperature and pressure called?

Correct answer A. Mass density

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Question 189 Water Management

What is protecting the face of an embankment against wave action with stone boulders called?

Correct answer A. Pitching

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Question 190 Water Management

What is the water that moves downward through the unsaturated zone above the water table called?

Correct answer D. Gravity water

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Question 191 Water Management

What is the discharge of a well per unit drawdown, usually expressed in gallons or litres per minute, called?

Correct answer B. Specific capacity

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Question 192 Water Management

What is the property of a saturated soil mass that allows it to transmit appreciable quantities of water called?

Correct answer C. Permeability

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Question 193 Water Management

Which soil property indicates the volume of water that can be stored in a formation?

Correct answer A. Porosity

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Question 194 Water Management

What percentage of the world’s total water is fresh water, mainly replenished by rain?

Correct answer B. 2.5%

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Question 195 Water Management

What is the estimated total quantity of water on Earth, which covers about 70% of its surface?

Correct answer C. 1.35x10^9 km3

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Question 196 Water Management

Wilting point is the limit beyond which no water is available and the crop begins to suffer. At what level of available water does this point occur?

Correct answer D. 20% water available

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Question 197 Water Management

Which type of soil water, making up roughly 15 percent of soil moisture content, is mostly unavailable to plants?

Correct answer B. Hygroscopic water

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Question 198 Water Management

Water application efficiency increases when the plot to be irrigated is of what shape?

Correct answer D. Rectangle

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Question 199 Water Management

For a given discharge, what is the depth of flow at which the specific energy is at its minimum called?

Correct answer C. Critical depth

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Question 200 Water Management

What is the usual permissible velocity of water flowing through a concrete-lined tunnel?

Correct answer B. 4 – 5m/sec

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