Nutritional requirements of a population can be estimated easily by
diet surveys of normal healthy people.
methods involving laboratory animals.
Why does a dead body float in water after some time ?
Because all the gases of the body leave it thus making it lighter than water.
Because the dead body bursts open and becomes lighter than water.
Because the dead body begins to emit foul smelling gases which lift the dead body to the surface of the water. '
Because the dead body swells and becomes lighter than water.
Why water, to which alcohol is addz!d, ii applied on the forehead of a person having high fever '?
Because the mixture of alcohol and water relieves headache.
Because the mixture of alcohol and water is a cleansing agent.
Because alcohal evaporates and causes coAing. This lowers, the temperature.
Because of none of these reasons.
lee floats on water but sinks in alcohol why
Because the force of attraction between the molecules of ice and alcohol is greater than the force of attractioa between
Because the specific gravity of ice is less than that of water but more than that of alcohol.
Because water is more viscDus than alcohol.
Because of all of these reasons.
For better utilization of food by the body, eat well balanced!diet in
A smoked metal ball, when dipped in water appears to shine brightly. Which of the following phenomena of light is responsible for this ?
Total internal reflection.
Rectilinear propagation of light.
Why steam causes more severe burns than boiling water ?
Because steam contains a greater amount of heat.
Because the temperature of steam is more than that ~off bboiling water.
Both of these.
None of these.
What can be the secret of good health ?
Eating a variety of foods.
Freedom from infection.
Eating lots of tonics.
None of t hese.
Pregnant woman needs additional food because ,
it is needed to meet the requirements of growing feotus.
of growth of her accessory organs.
both (a) and (b).
None of these.
Why is it difficult to walk on ice ?
Because ice is very cold.
Because the force of friction is very less.
Because the force of friction is greater.
Because ice cannot withstand the weight of a person walking on it.
1. World Geography -Test-01
2. World Geography -Test-02
3. World Geography -Test-03
4. Geography of India -Test-01
5. Geography of India -Test-02
6. Geography of India -Test-03
7. Geography of India -Test-04
8. Geography of India -Test-05
9. History of India - Test - 01
10. History of India - Test - 02
11. History of India - Test - 03
12. History of India - Test - 04
13. History of India - Test - 05
14. History of India - Test - 06
15. History of India - Test - 07
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A long concrete structure in front of a firing line from which machines throw clay targets in trap shooting; also known as a trench.