Answer / guest

science is a big field where technology is is a smaller field

Which are the research centres of department of atomic energy?

1 Answers  

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why nitrogen is about 70%(i.e.)highest percentage in environment

1 Answers  

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Permanent hardness of water, due to sulphates of the metal, can be destroyed by the use of 1 Nitrates 2 Zeolites 3 Sulphontes 4 None of these

2 Answers  

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Soda-acid fire extinguisher involves the reaction between 1 Sodium hydroxide and nitric acid 2 Sodium bi carbonate and sulphuric acid 3 Sodium sulphate and carbonic acid 4 Sodium carbonate and hydrochloric acid

5 Answers  

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What are comets?

1 Answers  

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Which of the following is used in making smoke bombs? 1 Sulphur 2 phosphorus 3 Hydrogen 4 Carbon

1 Answers  

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Bell metal is an alloy of 1 Brass an nickel 2 Zinc and copper 3 Tin and copper 4 None of these

1 Answers  

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Mesons are found in 1 ?-rays 2 Laser beam 3 X-rays 4 Cosmic rays

3 Answers   ABC, Indian Army, JSSC,

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How does a RCCB work? Difference between ELCB & RCCB?

1 Answers  

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Which of the following elements is obtained from sea weeds? 1 Argon 2 Sulpur 3 Vanadium 4 Iodine

1 Answers   Argon, Iodine,

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How many colours the sunlight spectrum has ? 1 Five 2 Three 3 Seven 4 Nine

2 Answers   Siscom,

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neel armstrong belongs to which country ?

1 Answers  

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