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protons and electrons
neutrons and electrons
protons and neutrons
protons and positrons
The fundamental particles present in the nucleus of an atom are
The gas causing acid rain in an industrial area is
The gas dissolved in water that makes it basic is:
The gas present in the stratosphere which filters out some of the suns ultraviolet light and provides an effective shield against radiation damage to living things is
The gas produced in marshy places due to decomposition of vegetation is
The gas that causes suffocation and death when coal or coke is burnt in a closed room is
The gas that usually causes explosions in coal mines is
The gas used for artificial ripening of green fruit is
The gas used for cooking (LPG) is chiefly a mixture of
The gas used in the manufacture of vanaspati from vegetable oil is