Substance X used for whitewashing
Substance X in the question is Calcium oxide also called as “Quick lime”.
Calcium oxide reacts with water and form calcium hyroxide and relases energy as heat. Calcium hydroxide is also called as “slaked lime”.
Science class 10
Activity 1.8 Ncert Science class 10
Silver chloride decomposition in the presence of light.
Activity 1.7 Ncert Science class 10
The activity asks to electrolyse water using a 6-volt battery and check the volume of gases liberated at anode and cathode. The activity also asks to bring the gas at the flame and see what happens.
Explain Activity 6.1 NCERT class 10 science Life processes
Experiment to demonstrate only green part of leaf produces starch.