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Chemistry

Chemistry
What particles move around the nucleus of an atom and are negatively charged?

Protons
Electrons
Positrons
Neutrons

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Chemistry
In silvery paints, the main constituent present is

White lead
Aluminium powder
Lead powder
Silver powder

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Chemistry
Supersonic jet causes pollution by thinning of

SO2 layer
O 2 layer
CO2 layer
O3 layer

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Chemistry
Cyanide poisoning causes death in seconds because

It causes Lysis of red blood cells
It breaks the electron transport chain
It denatures enzymes of the heart/muscle
It causes cardiac arrest

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Chemistry
The most abundant inert gas in the atmosphere is

Krypton
Argon
Helium
Neon

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Chemistry
The method of concentrating the ore which makes use of the difference in density between ore and impurities is called

levigation
magnetic separation
liquation
leaching

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MORE MCQ ON Chemistry

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