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Q. Brass gets discoloured in air because of the presence of which of the following gases in air?
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Q. Which one of the following is not biodegradable?
Q. In general, which is the cause of a sea breeze?
Q. The reflection by plane mirror
Q. In the human body, Cowper's glands form a part of which one of the following system?
Q. Scientific study of birds is known as
Q. Cosmetic powders are prepared from
Q. The radiant energy having lowest energy is
Q. The acid present in red ants is
Q. A person who lives exclusively on milk, egg and bread is likely to become a victim of
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