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Chemistry

Chemistry
Atoms having the same number of protons but different number of neutrons are called :

Anions
Higgs-boson
Isotopes
Cations

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Chemistry
This group of alumino-silicate minerals is widely used in making electrical insulators

Bauxite
Manganese
Mica
Chromite

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Chemistry
Which of the following is the petroleum wax ?

Carnauba wax
Bees wax
Paraffin wax
Jojoba wax

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Chemistry
The property of hydrogen which distinguishes it from alkali metals is

Its electropositive character
Its non-metallic character
Its reducing character
Its affinity for non-metal

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Chemistry
Which of the following gases is mixed with oxygen for breathing by divers in aqua lungs?

Methane
Helium
Hydrogen
Nitrogen

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Chemistry
Hardness of the water is commonly measured in terms of

Magnesium carbonate equivalents
Calcium sulphate equivalents
Magnesium sulphate equivalents
Calcium carbonate equivalents

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