Question

(2)
3. Write the skeletal equation for the following reactions :
(a) Hydrogen sulphide reacts with sulphur dioxide to form sulphur and water.
(b) Methane on burning combines with oxygen to produce carbon dioxide and water.
4. List two informations conveyed by a chemical equation.
A reddish brown metal turns black when heated in air. The reaction is reversed when
hydrogen gas is passed over the above formed black substance. Mention the type of reactions
taking place in each case.
(2)
6. Classify the following as exothermic and endothermic reactions:
(2)
(a) Photosynthesis
(b) Burning of natural gas
(c) Electrolysis
(d) Reaction of Iron oxide with aluminium.​

Answer 1

very big bro plz make it short then i will surely answer