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Chemistry

Chemistry
Brass is a solution of molten copper in

Gaseous zinc
Solid zinc
Molten tin
Molten zinc

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Chemistry
How many neutrons does iron have

30
26
8
13

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Chemistry
An electric iron has a heating element made of :

Zinc
Nichrome
Copper
Tungsten

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Chemistry
Which acid is used in Lead storage battery?

Nitric acid
Hydrochloric acid
Sulphuric acid
Acetic acid

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Chemistry
The amount of chlorine available in water after disinfection is called as

Combined available chlorine
Residual chlorine
Free available chlorine
Free chlorine

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Chemistry
Which of the following is not a gaseous air pollutant?

Oxides of sulphur
Smoke
Oxides of nitrogen
Hydrocarbon

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MORE MCQ ON Chemistry

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