General Science - Single MCQs (Page 38)

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Q371. Heavy water is?...Q372. If a ship moves from freshwater into seawater, it will?...Q373. Hydrometer is an instrument?...Q374. How many chromosomes pairs are there in a human body?...Q375. A tree's age can be found by?...Q376. Gobar gas contains mainly?...Q377. Glass is made from the mixture of?...Q378. A close bottle containing water at room temperature is taken to the Moon and tha...Q379. A chronometer measures?...Q380. A chemical reaction that takes place with the evolution of heat is called a/an?...