Food cans are coated with tin and not with zinc because
A. Zinc is costlier than tin
B. Zinc has a higher melting point than tin
C. Zinc is more reactive than tin
D. Zinc is less reactive than tin
Answer: Option C
A. Zinc is costlier than tin
B. Zinc has a higher melting point than tin
C. Zinc is more reactive than tin
D. Zinc is less reactive than tin
Answer: Option C
Which of the following phenomenon is considered responsible for Global Warming?
A. Greenhouse effect
B. Fire in coal mines
C. Dry farming
D. Monsoon
E. Trade winds
The nucleus of an atom consists of
A. electrons and neutrons
B. electrons and protons
C. protons and neutrons
D. All of the above
The number of moles of solute present in 1 kg of a solvent is called its
A. molality
B. molarity
C. normality
D. formality
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