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Chemistry

Chemistry
KMnO4 can be used as a/an

Pesticide
Insecticide
Fertiliser
Disinfectant

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Chemistry
What is a common name for the substance which irritates lachrymal glands ?

Anaesthetic Gas
Tear Gas
Laughing Gas
Noble Gas

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Chemistry
Gobar gas mainly contains

Methane
Hydrogen sulphide
Carbon dioxide
Carbon monoxide

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Chemistry
The number of electrons presents in H+ is

zero
two
three
one

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Chemistry
Type metal used in printing press is an alloy of

Lead and copper
Lead and zinc
Lead and antimony
Lead and bismuth

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Chemistry
Thermal electricity is generated by using which of these ?

Coal and Natural Gas only
Coal, Natural Gas and Petroleum
Coal only
None of these

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