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1. "Optical Phenomenon" in the fringe pattern of CD is

Ans : Interference


2. Celsius and Fahrenheit show the same temperature at

Ans : 40


3. Exchange particle in Quark-Quark Interaction

Ans : Gluon


4. The working of a rockets based on the principle of:

Ans : Conservation of momentum


5.The pollutants which move downward with percolating groundwater are called

Ans : Leachates


6.Hasdo Valley in Chhattisgarh is famous for  

Ans : Coal mines


7. Special Theory of Relative was proposed in

Ans : 1905


8.Black hole is an object to be found

Ans :   in the sky


9.IRADIAN is

Ans : 57.3 degree


10.Fraction of volume of ice seen outside when immersed in water?

Ans :   10.5%


11. The disease " bronchitis " is associated with:

Ans :   Lungs


 12. Which colour indicate Highest Temperature?

Ans : Dull red

 
13. Persons sitting in an artificial satellite of the earth have :

Ans :   Zero weight


14. Light Year is

Ans :   the distance traveled by light in one year


15. Liquefied petroleum gas (LPG) is mainly a mixture of

Ans :   propane and butane


16.The Ozone layer lies in the

Ans :   Stratosphere


17. Most of the light rays inside a tube -light is in the form of

Ans : ultra -violet light


18. Which is the alkalodid that contains in cola drinks?

Ans :   Caffeine


19. The device used for detecting even feeble current:

Ans :   Galvanoscope


20. Anemometer is an instrument used for measuring?

Ans:   Wind speed