Choose the correct word or letter from the brackets to complete the sentence and write only that down as the answer.i.Ammonium sulphate is an example of a/an[hydrous/anhydrous/crystalline] salt.(ii) The relative atomic mass of an element expressed in grams is known as -[a.m.u./gram atom/gram molecular mass](iii)The element which shows variable valency is [nickel/chromium/tin](iv)The reaction of iron with steam, liberating hydrogen gas is a[displacement / reversible / catalytic) reaction.(v) The soluble salt formed in the precipitation reaction between two salt solutions zinc nitrate & sodium carbonate is(zinc carbonate / sodium nitrate / zinc bicarbonate).

Choose the correct word or letter from the brackets to complete the se

1.	Choose the correct word or letter from the brackets to complete the sentence and write only that down as the answer.i.Ammonium sulphate is an example of a/an[hydrous/anhydrous/crystalline] salt.(ii) The relative atomic mass of an element expressed in grams is known as -[a.m.u./gram atom/gram molecular mass](iii)The element which shows variable valency is [nickel/chromium/tin](iv)The reaction of iron with steam, liberating hydrogen gas is a[displacement / reversible / catalytic) reaction.(v) The soluble salt formed in the precipitation reaction between two salt solutions zinc nitrate & sodium carbonate is(zinc carbonate / sodium nitrate / zinc bicarbonate).
Answer» 1. Crystalline SALT 2. a. m. U. 3. tin4.catalytic5. SODIUM nitrate