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Chemistry

Chemistry
The water pollution in river is measured by the dissolved amount of

Nitrogen
Oxygen
Chlorine
Ozone

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Chemistry
What is the mass percentage of oxygen in carbon dioxide (CO2)

0.727
0.658
0.509
0.305

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Chemistry
The coloured discharge tubes for advertisement mainly contain

Helium
Xenon
Argon
Neon

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Chemistry
Epsom salt is used

As purgative
In making tooth paste
In paper industry
In softening water

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Chemistry
Conversion of chemical energy into electrical energy occurs in

A battery
Dynamo
Electric heaters
Atomic bombs

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Chemistry
Which one of the following species has the highest bond order, shortest bond length and maximum bond strength

O-22
O+2
O-2
O2

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MORE MCQ ON Chemistry

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