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Chemistry

Chemistry
Which of the following fibres catches fire least ?

Rayon
Terricot
Cotton
Nylon

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Chemistry
Which of the following is the major constituent of LPG?

Methane
Propane
Butane
Ethane

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Chemistry
The oxidation number of nickel in K4[Ni(CN)4] is

Zero
4
8
–4

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Chemistry
Atomic number is the number equal to

Neutrons
Electrons
None of these
Protons

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Chemistry
Denatured spirit is ethanol mixed with

Petrol
Kerosene
Pyridine
Water

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Chemistry
Which one of the following organic compounds has fruity smell?

Ether
Alcohol
Aldehyde
Ester

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