Question

LONG ANSWER TYPE QUESTIONS

1. Balance the chemical equations for the followingreactions:
(i) Cu + H2SO4→ CuSO4 + SO2 +H2O
(ii) NaOH + H2SO4→ Na2SO4 +H2O
2. Differentiate between balanced and an unbalanced chemicalequation.
3. Write the following chemical equation with state symbols:
(i) CaCO3→ CaO +CO2
(ii) 2Na + 2H2O → 2NaOH +H2
(iii) AgNO3 + NaCl→ AgCl +NaNO3

(iv) 6CO2 + 6H2O → C6H12O6 + 6O2
4. What do you mean by exothermic and endothermic reactions? Giveexamples.
5. What is the difference between displacement and double displacement reactions? Write equations for thesereactions.
6. Explain, how do oxidation and reduction processes occursimultaneously.
7. What is corrosion? Write the chemical reaction that takes place during the corrosion of iron?
8. What are the various ways to make a chemical equation moreinformative?
9. Explain the following terms: (i) corrosion (ii)Rancidity
10. When metal X is treated with a dilute acid Y, then a gas Z is evolved which burns readily by making a littleexplosion.
(a) Name any two metals which can behave like metalX.
(b) Name any two acids which can behave like acidY.
(c) Name the gasZ.
(d) Is the gas Z lighter than or heavier thanair?
(e) Is the reaction between metal X and acid Y exothermic orendothermic?
(f) By taking a specific example of metal X and dilute acid Y, write a balanced chemical equation for the reaction which takes place. Also indicate physical state of all the reactants andproducts.

Answer 1

Answer:

So big............... I can't do it

Answer 2

Answer:

Balance the chemical equations for the followingreactions:

(i) Cu + H2SO4→ CuSO4 + SO2 +H2O

(ii) NaOH + H2SO4→ Na2SO4 +H2O

2. Differentiate between balanced and an unbalanced chemicalequation.

3. Write the following chemical equation with state symbols:

(i) CaCO3→ CaO +CO2

(ii) 2Na + 2H2O → 2NaOH +H2

(iii) AgNO3 + NaCl→ AgCl +NaNO3

(iv) 6CO2 + 6H2O → C6H12O6 + 6O2

4. What do you mean by exothermic and endothermic reactions? Giveexamples.

5. What is the difference between displacement and double displacement reactions? Write equations for thesereactions.

6. Explain, how do oxidation and reduction processes occursimultaneously.

7. What is corrosion? Write the chemical reaction that takes place during the corrosion of iron?

8. What are the various ways to make a chemical equation moreinformative?

9. Explain the following terms: (i) corrosion (ii)Rancidity

10. When metal X is treated with a dilute acid Y, then a gas Z is evolved which burns readily by making a littleexplosion.

(a) Name any two metals which can behave like metalX.

(b) Name any two acids which can behave like acidY.

(c) Name the gasZ.

(d) Is the gas Z lighter than or heavier thanair?

(e) Is the reaction between metal X and acid Y exothermic orendothermic?

(f) By taking a specific example of metal X and dilute acid Y, write a balanced chemical equation for the reaction which takes place. Also indicate physical state of all the reactants andproducts