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Science Glossary


1. 

The most familiar form of radiant energy in sunlight that cause tanning and has the potential for causing melanoma in humans is called

Answer : A. ultra-violet radiation

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2. 

Ball bearings are used in bicycles, cars, etc., because?

Answer : A. The effective area of contact between the wheel and axle is reduced

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3. 

Which one among the following satellites is used to reflect the radio-signals back to the Earth?

Answer : C. Passive satellite

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4. 

A cold soft drink is kept on balance. When the cap is opened, then the weight

Answer : D. first increase then decrease

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5. 

When a red glass is heated in dark room it will seem

Answer : B. green

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6. 

How is the pressure cooker work?

Answer : C. High pressure inside the cooker rises the boiling point of water

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