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Q. Why two thin shirts can keep us warmer than a single thick shirt in winters?
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Q. In a railway track, two rails are joined end to end with a gap in between themas
Q. Which of these substances exhibits the weakest intermolecular forces?
Q. Which of the following has the least penetrating power?
Q. How much noise is produced when man breathes?
Q. Ordinary table salt is sodium chloride. What is baking soda?
Q. Which of the following is a non metal that remains liquid at room temperature?
Q. A scientist from USA discovered 'BISIN', which
Q. If the temperature of a place increases suddenly, the relative humidity
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