Who discovered penicillin ?
Which of the following was the first one to declare that the earth revolves ?
Which of the following statements is true about chlorophyll ?
Chlorophyll helps the plant to absorb sunlight.
Chlorophyll is a green pigment in the leaves of a plant.
Chlorophyll contains. iron.
All of these.
Who is the founder of decimal system ?
Why water is used as a cooler in engine radiators ?
Because water is cheap and easily available.
Because water is a bad conductor of electricity.
Because water has high specific heat and absorbs heat quickly.
Because water is a good conductor of heat.
The humming of a bee is due to
the fast movement of bee's wings.
the melodious tunes sung by the bee.
the heavy breathing of the bee.
the resistance offered by air to the fast movement of bee.
Why more dew is seen on grass and tree leaves and not on polished surfaces ?
Because green leaves of grass are good radiators of heat.
Because green leaves of grass are poor radiator's of heat.
Because green leaves reject their surplus water.
Because all green matter is receptive to the formation of dew'.
Who discovered the neutral particles neutron ?
An eleeric fuse is a safety device in electric circuits because
it completes the electric circuit.
it acts as a voltage stabalizer.
it regulates the flow of current.
when high voltage current passes through it, the fuse melts.With the melting of fuse, the circuit is broken. Thus, the~ main electrical installation is saved.
In how many hours Earth completes, one rotation about its own axis ?
3651 x 24 hrs.
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
Benefits of Zucchinis
Benefits of Strawberries