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Q. Which among the given is used to remove rust stains on cloth
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Q. Besides CO2, the other green house gas is
Q. Who was the inventor of positron?
Q. Optical fiber is based upon the principle of–
Q. Which of the following one of the following contributes largely to the 'green house effect'
Q. Permanent hardness of water may be removed by the addition of
Q. The main constituents of pearl are
Q. Which one among the following is not correct about down's syndrome?
Q. In the human body, Cowper's glands form a part of which one of the following system?
Q. Carbon occurs in nature in the purest form as
Q. Which one of the following types of radiation has the smallest wave length
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