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Chemistry

Chemistry
In vulcanisation process, rubber can be hardened by adding

Sulphur
Nitrogen
Alcohol
Silicon

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Chemistry
If there is one million Mg2+ ions in MgCl2, how many chloride ions are there?

Ten million
Two million
Half a million
One million

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Chemistry
The unit of ionic product of water (Kw) is :

Mol2 let-2
Mol-1 let-2
Mol-1 let-1
Mol2 let-1

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Chemistry
The gas used for artificial fruit ripening of green fruit is

Ethane
Methane
Acetylene
Ethylene

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Chemistry
Which of the following is used to denature ethanol ?

Phenol
Methyl alcohol
Methane
Propyl alcohol

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Chemistry
In arc welding, Argon is used because of its

High calorific value
Ability to lower the melting point of the metal
Low reactivity with metal
High flammability

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