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Chemistry

Chemistry
Which is abundant in Gobar gas?

Carbon dioxide
Methane
Hydrogen
Oxygen

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Chemistry
The chemical used for cloud seeding for artificial rains is

Potassium Bromide
Potassium Nitrate
Silver Nitrate
Silver Iodide

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Chemistry
Galena is a mineral of

Gold
Calcium
Iron
Lead

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Chemistry
The octane number of zero is assigned to

iso-octane
2-methyl octane
n-heptane
3-methyl octane

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Chemistry
Ozone saves the biosphere by absorbing high energy radiations called ________ .

X–rays
Gamma rays
Infra-red (IR)
Ultraviolet rays (UV)

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Chemistry
Suspension particles have the size between

10–1 – 10–2 cm
10–8 – 10–10cm
10–2 – 10–4 cm
10–5 – 10–7cm

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MORE MCQ ON Chemistry

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