Combustion is the process in which
1 Heat is produced
2 Light is produced
3 Heat and light are produced
4 None of these
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The gases used in different types of welding would include 1 Oxygen and hydrogen 2 Oxygen, acetylene and argon 3 Oxygen and acetylene 4 None of these
Which of the following substances undergoes chemical change on heating? 1 Sodium chloride 2 Silica 3 Lead nitrate 4 Platinum wire
which country is known as thunderbolt in the world
When did the most luminous nova appear?
What do you understand by nutritive constituents of food ?
why nitrogen is about 70%(i.e.)highest percentage in environment
Of the following metals which, one pollutes the air of a big city? 1 Copper 2 Chromium 3 Lead 4 Cadmium
3 Answers HCL, High Court, SSC,
Which scientist made detailed study on novae?
wheather lightning will attack a aeroplane during flying if not why
What is the Biology ?
What are all of the uses for a dynamo?