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Chemistry

Chemistry
Supersonic jet causes pollution by thinning of

O 2 layer
O3 layer
CO2 layer
SO2 layer

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Chemistry
The main chemical constituent of the oil of cardamom which is responsible for flavour of this oil is

cineole
limonene
geraniol
engenol

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Chemistry
Which of the following is not a precious/semi-precious stone?

Emerald
Pearl
Ruby
Sapphire

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Chemistry
Electric fuse is an alloy of

Tin and lead
Zinc and lead
Copper and iron
Carbon and tin

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Chemistry
The quality of petrol is expressed in terms of

Added unlead compounds
Cetane number
Gold number
Octane number

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Chemistry
The trans-uranium elements are the chemical elements with atomic numbers greater than

89
86
96
92

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MORE MCQ ON Chemistry

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