Chemistry Browning of paper in old books is caused by Frequent use Oxidation of cellulose Lack of aeration Collection of dust Frequent use Oxidation of cellulose Lack of aeration Collection of dust ANSWER DOWNLOAD EXAMIANS APP
Chemistry If we burn graphite, Residue will be left No residue will be left It will not burn It will change into diamond Residue will be left No residue will be left It will not burn It will change into diamond ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following chemicals is responsible for depletion of ozone layer in the atmosphere? Carbon dioxide Nitrous oxide Sulphur dioxide Chlorofluorocarbons Carbon dioxide Nitrous oxide Sulphur dioxide Chlorofluorocarbons ANSWER DOWNLOAD EXAMIANS APP
Chemistry In an oxygen molecule, two atoms are united by Two bonds One bond Three bonds Four bonds Two bonds One bond Three bonds Four bonds ANSWER DOWNLOAD EXAMIANS APP
Chemistry If a buffer solution is diluted its pH Is decreased Remains same Is increased Will slowly increase and then it will decrease Is decreased Remains same Is increased Will slowly increase and then it will decrease ANSWER DOWNLOAD EXAMIANS APP
Chemistry The purest form of water in nature is River water Rain water Lake water Sea water River water Rain water Lake water Sea water ANSWER DOWNLOAD EXAMIANS APP
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