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Q. In which of the following era began the Self replicating RNA molecules on Earth ?
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Q. Soap is prepared by boiling caustic soda with
Q. Which of the following one of the following is a good electrical conductor
Q. A glass tumbler containing ice shows droplets of water on the outer surface because-
Q. The number of heart beats on an average in an adult human is in the range of
Q. Addition excessive amounts of heat to a lake is referred to as:
Q. The hydrophilic nature of DNA is due to the presence of
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Q. Atomic number of an element gives
Q. Exposure to sunlight helps a person improve his health because:
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