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Chemistry

Chemistry
Which of the following is the best fuel in terms of energy released per gram of fuel?

Hydrogen
Butane
Ethanol
Methane

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Chemistry
Ozone layer in the upper parts of the atmosphere serves as a protective shield against harmful

Solar infrared radiation
SO2 in the air
CO2 in the air
Solar ultraviolet radiation

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Chemistry
Helium gas is filled in ballons because

It is one of the constitutents of water
Its atomic number is 2
It is lighter than air
It is a noble gas

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Chemistry
The names of the scientists, Newlands, Mendeleev, and Meyer are associated with the development of

atomic structure
discovery of elements
periodic table of contents
metallurgy

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Chemistry
Zinc sulphide is commonly used as

Herbicide
Fungicide
Deodorant
Rodenticide

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Chemistry
Quartz is a crystalline form of

Silica
Alumina
Glass
Limestone

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MORE MCQ ON Chemistry

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