Question

3) State the type of chemical reactions and balanced chemical equations that take place
following:
a. Magnesium wire is burnt in air
b. Electric current is passed through
water
c. Ammonia and hydrogen chloride gases are mixed
d. Phosphorus burns in presence of chlorine to form phosphorus Penta chloride
e. Burning of natural gas
f. Process of respiration
g. Iron reacts with steam
h. Magnesium reacts with Dil.HCI
i.copper is heated in air
j. Silver bromide on exposure to sunlight

4) What happens when water is added to quick lime. Write chemical equation.

5) Write the reaction used in photography.

6) What do you mean by rancidity? Explain the ways by which food industries prevent
rancidity.

7) What is observed when a solution of potassium iodide solution is added to a solution of lead nitrate. Name the type of reaction. Write balanced chemical equation for this.

8) Which products will be obtained when lead nitrate is heated. Write balanced chemical equation.

9) What is redox reaction? Identify the substance oxidised and the substance reduced in the
following reaction:
a. 2Pb0 + C = 2Pb + CO2
b. MnO2 + 4 HCI = MnCl2 + 2H2O + Cl2​

Answer 1

Answer:

app kitne chalak ho itne saare question koi kar sakta hai

Answer 2

Answer:

Bhai koi answer bata do in ka