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Chemistry

Chemistry
Stains of rust on clothes can be removed by :

H2O2
Oxalic acid
Alcohol
Petrol

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Chemistry
Which one of the following is used as an anti-freeze for the automobile engines ?

Ethanol
Methanol
Ethylene glycol
Propyl alcohol

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Chemistry
The nuclear particle having no mass and no charge, but only spin is

Electron
Neutrino
Proton
Meson

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Chemistry
In upper layer of atmosphere ozone is formed by

The combination of oxygen molecules
Subjecting oxygen to high pressure
The action of nitrogen on oxygen in atmosphere
The action of ultraviolet rays on oxygen

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Chemistry
Which one is the lightest element in the periodic table

Hydrogen
Oxygen
Carbon
Helium

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Chemistry
The important metal used with iron to produce stainless steel is

Chromium
Carbon
Tin
Aluminium

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