Answer / jibz

1.Infra red rays.....William Herschel
2.intensity........Decibels
3.Material in fuse wire.....Low melting point
4.Radioactivity...Property of z>83.
5.Source of Energy.........Solar cells
6.Lubricant...Graphite

Answer / orion

infra-red rays were first detected by?

Photosynthesis is 1 An exothermic process 2 An endothermic process 3 A neutral process 4 A thermostatic process

2 Answers  

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Which scientists gave detailed information about nebula?

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‘No two electrons in an atom can have the same set of four quantum numbers’ is 1 Bohr’s law 2 Aufbau principle 3 Newton’s law 4 Pauli’s exclusion principle

1 Answers   Pipe Corporation,

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The Contact Process is involved in the manufacture of 1 Nitric acid 2 Sulphuric acid 3 Ammonia 4 Caustic soda

2 Answers  

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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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if appointed at aryabhatt school for how long should we expect you work with us

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What is the life cycle ?

1 Answers  

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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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Which of the following gases is obtained by the reaction of copper with dilute nitric acid is 1 NO2 2 N2O5 3 O2 4 NO

1 Answers  

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When was the atomic energy regulatory board ( aerb ) constituted?

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Chemical change does not take place in case of 1 Souring of milk into curd 2 Rusting of iron in atmosphere 3 Burning of magnesium ribbon in air 4 emitting of light by a red hot platinum wire

3 Answers   Banking, Eastern Railway,

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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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