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Chemistry

Chemistry
A pungent smell often present near the urinals is due to

Urea
Ammonia
Sulphur-di- oxide
Chlorine

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Chemistry
The items amenable to detection by soft x-rays are

narcotics
genuine coins from counterfeit coins
contrabands
lead in bullets

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

Tin
Aluminium
Carbon
Chromium

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Chemistry
An inert gas mixed with oxygen given to patients suffering from restricted breathing is

Helium
Radon
Krypton
Argon

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Chemistry
When a bond is formed between two atoms, the energy of the system will

May increase or decrease
Increase
Decrease
Remain the same

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Chemistry
Cloud is a colloidal dispersion of

Air in a dispersion medium of water
Mist in a dispersion medium of air
Water drops in a dispersion medium of air
Fog in a dispersion medium of water

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