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Chemical formula for water is

NA
C6H12O6
H2SO4
H2O


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What is the common name for washing soda

Sodium carbonate
Sodium Hypochlorite
Benzoic Acid
Sodium Cyanide


Sodium carbonate (also known as washing soda or soda ash), Na2CO3 is a sodium salt of carbonic acid.

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The chemical added to odourless LPG gas for imparting a detectable smell to it is

Sulphur
Methane
Carbon di oxide
Argon


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How can we remove permanent hardness of water

By addition of sodium carbonate
By addition of Sugar
By addition of sulphur
By addition of lime


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_____ is found in liquid form at room temperature

Krypton
Xenon
Lithium
Franciumq


Francium is a chemical element with symbol Fr and atomic number 87. It was formerly known as eka-caesium and actinium K. It is one of the two least electronegative elements, the other being caesium.

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Where do we keep Sodium metal ?

Under water
With sulphur
Under kerosene
Under petrol


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The filament of an electric bulb is made of

Graphite
Iridium
Tungsten
Columbium


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Bell metal is an alloy of

Tin and Copper
Brass and Copper
Nickel and Zinc
Brass and Tin


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What is the main reason for water being a main solvent of Ionic salts

No colour
No Taste
High dipole moment
High boiling point


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Which is the lightest metal found on earth

Copper
Gold
Lithium
Mercury


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