how is rrb model question paper for science junior engineer gr.II

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The isotope of uranium capable of sustaining chain reactions is 1 U-235 2 U-238 3 U-239 4 None of these

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BARC CHIF

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Which of the following reactions is used for increasing the number of carbon atoms in a chain? 1 Substitution reaction 2 Wurtz reaction 3 Friedel – Crafts reaction 4 Cannizzaro’s reaction

2 Answers  

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difference between typewriter and computer?

2 Answers   ISRO,

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Study Of Life in outer space is known As

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which country is known as thunderbolt in the world

1 Answers   CAT,

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Who propounded the signs of the zodiac?

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A moderator is used in nuclear reactors in order to 1 Increase the number of neutrons 2 Decrease the number of neutrons 3 Slow down the speed of neutrons 4 Accelerate the neutrons

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Deep blue color is imparted to glass by the presence of 1 Iron oxide 2 Cupric oxide 3 Nickel oxide 4 Cobalt oxide

2 Answers  

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WHY WE SMELL A SCENT AFTER RAIN?? BUT RAIN WATER IS PUREST FORM OF WATER WHICH IS ODOURLESS.

1 Answers  

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how the Adams bridge was formed?

1 Answers   ISRO,

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