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Chemistry

Chemistry
Basicity of boric acid, H3BO3 is

2
4
3
5

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Chemistry
Which one of the following is also known as solution ?

A homogeneous mixture
A heterogeneous mixture
A compound
A suspension

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Chemistry
Which type of radiations are absorbed by the upper layer of the atmosphere?

Ultraviolet
Radio-waves
Visible
Infrared

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Chemistry
In silvery paints, the main constituent present is

White lead
Aluminium powder
Silver powder
Lead powder

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Chemistry
The “King of Metals” is :

Aluminium
Silver
Iron
Gold

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Chemistry
Which one is the naturally occuring heaviest element

Mercury
Uranium
Protactinium
Thorium

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