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Chemistry

Chemistry
Which of the following is ozone depleting pesticide ?

Ethylene ozonide
D.T.
Benzene
Methyl bromide

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Chemistry
An emulsifier is an agent which

Stabilises an emulsion
Accelerates the dispersion
Aids the flocculation of an emulsion
Homogenises an emulsion

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

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

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Chemistry
Atoms of same element having different mass numbers are called________

Isotopes
Isotones
Isobars
Isomers

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Chemistry
Helium gas is filled in ballons because

It is lighter than air
Its atomic number is 2
It is a noble gas
It is one of the constitutents of water

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

Decrease
Remain the same
May increase or decrease
Increase

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MORE MCQ ON Chemistry

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