A certain inorganic compound (A) on heating loses its water of crystallization. On further heating, a blackish brown powder (B) and two oxides of sulphur (C and D) are obtained.

Name the two crystalline forms of sulphur.

2 g of ferrous sulphate crystals are heated in a dry boiling tube(a) List any two observations.(b) Name the type of chemical reaction taking place.(c) Write balanced chemical equation for the reaction and name the products formed

Heat a few crystals of copper sulphatein a dry boiling tube.n What is the colour of the coppersulphate after heating?n Do you notice water droplets in theboiling tube? Where have these comefrom?n Add 2-3 drops of water on the sampleof copper sulphate obtained afterheating.n What do you observe? Is the bluecolour of copper sulphate restored?

A student heated a blue copper sulfate crystal in a test tube. After a few minutes, she observed that the crystal turned white and the inside of the test tube was covered with a thin film of water. The water inside the test tube most likely __.Multiple choice question.condensed from the air around the test tubecame from the blue copper sulfate crystal, which is a hydrateseeped through the sides of the test tubewas left from cleaning the test tube the night before

A compound P is heated in a test tube with sodium hydroxide solution. A red litmuspaper held at the mouth of the test tube turns blue.Which of the following could compound P be?(a) zinc sulphate(b) copper sulphate(c) ferrous sulphate(d) ammonium sulphate