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Chemistry

Chemistry
The hydronium ion is

H+
H3O+
H2+
HO -

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Chemistry
Air is said to be saturated when :

Its pressure is minimum
It contains maximum content of water vapour
It blows over the barren land
Its thickness is maximum

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Chemistry
Nylon threads are made of

Polysaccharide
Polyester polymer
Polyvinyl polymer
Polyamide polymer

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Chemistry
Which one is the naturally occuring heaviest element

Thorium
Mercury
Protactinium
Uranium

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Chemistry
The compound that has the least value for octane number is :

N-heptane
Iso-octane
2,2-dimethyl hexane
2-methyl heptane

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Chemistry
Element 106 was discovered by

Rutherford
Seaborg
Lawrence
Kurchatove

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MORE MCQ ON Chemistry

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