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Chemistry

Chemistry
Which of the following is not present in RNA

Thymine
Phosphate
Ribose
Uracil

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Chemistry
The chief constituent of natural gas is:

Propane
Nitrogen
Helium
Methane

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Chemistry
Which type of fire extinguisher is used for petroleum fire ?

None of these
Powder type
Soda acid type
Foam type

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Chemistry
When water itself combines chemically with some element or mineral it is called

Hydration
Desilication
Carbonation
Oxidation

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Chemistry
This group of alumino-silicate minerals is widely used in making electrical insulators

Chromite
Mica
Bauxite
Manganese

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Chemistry
Suspension particles have the size between

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

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