Acid rain is caused due to pollution of atmosphere by
A. Oxides of carbon and nitrogen
B. Oxides of nitrogen and sulphur
C. Oxides of nitrogen and phosphorous
D. None of these
Answer: Option B
A. Oxides of carbon and nitrogen
B. Oxides of nitrogen and sulphur
C. Oxides of nitrogen and phosphorous
D. None of these
Answer: Option B
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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