Question

Give one example of a chemical equation matching with the following description: 1. A combination reaction with three reactants. 2. Endothermic combination reaction that gives a liquid product. 3. A double decomposition reaction that produce an insoluble base. 4. A thermal decomposition reaction of a salt that deposit the metal present in it​

Answer 1

Answer:

Question 1.(1986)

Explain : Silver nitrate solution is kept in coloured reagent bottles in the laboratory.

Answer:

Silver nitrate gets decomposed by sunlight. Hence silver nitrate is stored in coloured reagent

bottles.

Question 1.(1987)

Give an example of an endothermic reaction.

Answer:

Question 1.(1988)

State in each case if the reaction represents oxidation or reduction

Answer:

Question 1.(1989)

Reactions can be classified as : Direct combination, decomposition, simple displacement, double

decomposition, Redox reactions. State which of the following types, takes place in the reactions

given below

1. Cl2 + 2KI → 2KCl + l2

2. 2Mg + O2 → 2MgO

3. SO2 + 2H2O + Cl2 → 2HCl + H2SO4

4. AgNO3 + HCl → AgCl + HNO3

5. 4HNO3 → 4NO2 + 2H2O + O2

Answer:

1. Cl2 + 2KI → 2KCl + I2 — Simple displacement

2. 2Mg + O2 → 2MgO — Direct combination

3. SO2 + 2H2O + Cl2 → 2HCl + H2SO4 — Redox reaction

4. AgNO3 + HCl → AgCl + HNO3 — Double decomposition

5. 4HNO3 → 4NO2 + 2H2O + O2 — Decomposition reaction

Explanation: