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Chemistry

Chemistry
Which of the following is not present in RNA

Thymine
Uracil
Ribose
Phosphate

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Chemistry
Sulphur dioxide bleaches colouring matter by :

Decomposition
Oxidation
Reduction
Dehydration

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Chemistry
Periodic table contains how many groups

18
16
19
17

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Chemistry
Aluminium salt commonly used to stop bleeding is

Potash alum
Aluminium sulphate
Aluminium Chloride
Aluminium nitrate

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Chemistry
'Fire-fighting clothes' are made from

Talc
Asbestos
Steatite
Mica

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Chemistry
Denatured spirit is ethanol mixed with

Water
Pyridine
Petrol
Kerosene

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