Question

Q.3. There are certain words in bold letters in the following sentences. Write questions to
which these words are the answers :
(i) India fought her first battle for independence in 1857.
(ii) Sunita Williams has brought India pride.
(iii) You should save some money for rainy days.
(iv) Everybody needs food, clothing and shelter.
(v) You can reduce your obesity by doing exercise.
(vi) Anu's paintings attracted the visitors.​

Answer 1

7H2O). On heating, ferrous sulphate crystals lose water and anhydrous ferrous sulphate (FeSO4) is formed. So their colour changes from light green to white. On further heating, anhydrous ferrous sulphate decomposes to form ferric oxide (Fe2O3), sulphur dioxide (SO2) and sulphur trioxide (SO3)