1 Alloys which contain carbon
2 Alloys which have great resistance to abrasion
3 Alloys which contain mercury as one of the contents
4 None of these
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Answer / guest
(3) Alloys which contain mercury as one of the contents
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Answer / sarita
alloy which contain mercury as one constituent
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The inert gas which is substituted for nitrogen in the air, used by deep sea divers for breathing, is 1 Helium 2 Argon 3 Krypton 4 Xenon
The chemical used as a ‘fixer’ in photography is 1 Borax 2 Sodium thiosulphate 3 Sodium sulphate 4 Ammonium persulphate
Who developed primary blue print programme?
What is the wavelength of visible spectrum? 1 1300A-3000A 2 3900A-7600A 3 7800A-8000A 4 8500A-9800A
What is the Metabolism ?
The process by which an organic compound breaks down into simpler compounds on heating to high temperature is known as 1 Armatisation 2 Polymerization 3 Pyrolysis 4 Reduction
Which scientists gave detailed information about nebula?
Heavy water is 1 Tritium oxide 2 Deuterium oxide 3 Rain water 4 None of these
The metal that is present in photo films is 1 Mercury 2 Platimnum 3 Magnesium 4 Silver
Which of the following is commonly called a ‘polyamide’? 1 Rayon 2 Orlon 3 Terylene 4 Nylon
The location and energy of an electron in an atom can be specified by 1 Atomic mass 2 Atomic number 3 Quantum numbers 4 None of these
Which of the following elements is not-radioactive? 1 Uranium 2 Thorium 3 Plutonium 4 zirconium