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Chemistry

Chemistry
Which of the following gases is most toxic ?

Chlorine
Carbon monoxide
Sulphur dioxide
Carbon dioxide

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Chemistry
'All the four quantum numbers of two electrons in an atom are not the same.' It is the law of –

Uncertainty Principle of Hiesenberg
Exclusion Principle of Pauli
Avogadro's Law
Hund's rule of maximum multiplicity

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Chemistry
The example of oligosaccharide is

Sucrose
Glucose
Ribose
Cellulose

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Chemistry
Ultraviolet rays can be used in water treatment as

Precipitator
Hydrolyser
Disinfectant
Flocculator

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Chemistry
When lime juice is dropped on baking soda, brisk effervescence takes place because the gas evolved is

Oxygen
Carbon dioxide
All of them
Hydrogen

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Chemistry
In an oxygen molecule, two atoms are united by

Three bonds
Four bonds
One bond
Two bonds

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MORE MCQ ON Chemistry

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