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Chemistry

Chemistry
Lead pencil contains

Lead sulphide
Graphite
Ferrous sulphide
Lead

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Chemistry
Which one of the following is not a fertilizer?

Calcium ammonium nitrate
Calcium sulphate
Ammonium sulphate
Potassium nitrate

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Chemistry
The compound that has the least value for octane number is :

2-methyl heptane
2,2-dimethyl hexane
N-heptane
Iso-octane

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Chemistry
Aerated water contains

NO2
SO2
H2
CO2

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Chemistry
The anode of a dry cell is made up of

Zinc
Iron
Cadmium
Lead

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Chemistry
What is the element required for solar energy conversion ?

Ultra pure carbon
Tantalum
Silicon
Beryllium

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MORE MCQ ON Chemistry

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