Chemistry Which of the following is used in welding broken pieces of iron rails and machine parts? Solder Aluminium sulphate Aluminium powder None of these Solder Aluminium sulphate Aluminium powder None of these ANSWER DOWNLOAD EXAMIANS APP
Chemistry The maximum number of isomers for an alkene with molecular formula C4H8 is 4 5 3 2 4 5 3 2 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Atoms of same element having different mass numbers are called________ Isotones Isomers Isotopes Isobars Isotones Isomers Isotopes Isobars ANSWER DOWNLOAD EXAMIANS APP
Chemistry The acid rain destroys vegetations because it contains Nitric acid Ozone Sulphuric acid Carbon monoxide Nitric acid Ozone Sulphuric acid Carbon monoxide ANSWER DOWNLOAD EXAMIANS APP
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 Metal are good conductors, because The molecules in them collide very freely They contain reflecting surface They contain free electrons The molecules in them are very close to each other The molecules in them collide very freely They contain reflecting surface They contain free electrons The molecules in them are very close to each other ANSWER DOWNLOAD EXAMIANS APP
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