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Chemistry

Chemistry
Which of the following is not a nucleon?

Proton
Positron
Neutron
Electron

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Chemistry
Aquaregia is a mixture of the following in the ratio 1 : 3 by volume

Conc. HNO3 and conc. HCl
Dil. HCl and dil. HNO3
Conc. HNO3 and conc. H2SO4
Conc. HCl and conc. HNO3

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Chemistry
Which of the following gases is mixed with oxygen for breathing by divers in aqua lungs?

Methane
Hydrogen
Helium
Nitrogen

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Chemistry
What is the most commonly used substance in fluorescent tubes?

Sodium vapour and neon
Sodium oxide and argon
Mercury oxide and neon
Mercury vapour and argon

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Chemistry
Which of the following metals is not a pollutant ?

Lead
Aluminium
Arsenic
Mercury

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Chemistry
The fiber least prone to catch fire is

Polyester
Cotton
Terylene
Nylon

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MORE MCQ ON Chemistry

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