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Chemistry

Chemistry
CNG used in automobiles to check pollution, mainly consists of

CH4
H2
CO2
N2

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Chemistry
An emulsifier is an agent which

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

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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
Hund's rule of maximum multiplicity
Avogadro's Law

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Chemistry
The length of double bond is _______ than single bond

Longer
None of these
Shorter
Of same lenght

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Chemistry
The element with highest ionization potential is

Helium
Oxygen
Carbon
Boron

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Chemistry
A balloon filled with helium rises in air because

Helium is less dense than air
Air exerts an upward force on the balloon
Helium pushes down on the air below the balloon
The balloon is weightless

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