To assess a nutritional status of a population, which of the following methods will be most appropriate ?
Taking heights and weights and comparing these with normal heights and weights meant for that particular age.
Any clinical symptoms.
All 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.
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.
Why the hair of a painting brush stick together when taken out of water ?
Because the free surface of water tends to contract.
Because the cohesive force between the molecules of water more in air than in water.
Because the water glues the hair together.
Because the adhesive force between the molecules of water and the molecules of hair is very strong.
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 does a parachute descend slowly ?
Because of a special mechanical device in a parachute. This retards the motion of the parachute. '
Because it is made of a material on which the'gravitational pull of the earth is not effective.
Because the paracbute is designed in such a way that the upward thrust applied by air is slightly less than the weight of the object or man in the parachute.
Because the man, in the parachute, continuously applies a force in the upward direction. The force applied in the Upward direction is only slightly less than the weight of the man.
At what angle a javelin should be thrown so that it attains the maximum horizontal range ?
At an angle of 30' with horizontal.
At an angle of 4 5' with horizontal.
At an angle of 60' with horizotnal.
The horizontal range of the javelin does not depend on the angle at which it is thrown.
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 a small space is left between each of the two rails of a railway line ?
Because repairs can be carried out conveniently.
It is done to allow for expansion because a lot of heat is produced on the rails.
It is done to reduce the force of friction between the wheels of the train and the railway line.
Because the small space acts as an outlet for air when the train is passing.
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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Beat The Heat
Park your car in shade
Try to find a place in the shade so that whenyou drive it again, it isn't extremely hot inside the car.