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(d) Helium or nitrogen
(c) a mixture of ferric , oxide sulphur dioxide and sulphur trioxide.
(c) calcium carbonate
(a) 3Fe and 8H
Which of the following gases can be used for storage of fresh sample of an oil for a long time ?
(d) Helium or nitrogen
(d) Helium or nitrogen
See lessOn heating ferrous sulphate crystals, we obtain
(c) a mixture of ferric , oxide sulphur dioxide and sulphur trioxide.
(c) a mixture of ferric , oxide sulphur dioxide and sulphur trioxide.
See lessThe shiny finish to the walls is because of
(c) calcium carbonate
(c) calcium carbonate
See lessWhat is the number of iron atoms and hydrogen atoms in the balanced equation for the reaction of steam on iron ?
(a) 3Fe and 8H
(a) 3Fe and 8H
See less