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Chemistry

Chemistry
The non-metal found in the liquid state is

Nitrogen
Chlorine
Fluorine
Bromine

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Chemistry
A potato tuber has been cut into two halves. A few drops of iodine solution are placed on the cut surface of one of the halves. What colour change will be noticed?

From brown to blue-black
From blue to pink
From pink to blue-green
From brown to orange-red

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Chemistry
The liquid waste from kitchens and baths, of residences is known as :

Storm water
Domestic sewage
Refuse
Sullage

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Chemistry
Which of the following is used as anesthetic ?

N2O
NO2
NO
NH3

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Chemistry
The wire of flash bulb is made of:

Magnesium
Barium
Copper
Silver

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Chemistry
When a lead storage battery is discharged,

Sulphuric acid is consumed
Lead sulphate is consumed
Lead is formed
SO2 is evolved

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