1. A
   Acetic acid
2. B
   Sulphuric acid
3. C
   Tartaric acid
4. D
   Hydrochloric acid.

Tap an option to check your answer.

1. A
   $\text{MnO}_2$ is oxidised and HCl is reduced.
2. B
   $\text{MnO}_2$ is reduced and HCl is oxidised.
3. C
   HCl is oxidised.
4. D
   $\text{MnO}_2$ is reduced.

Tap an option to check your answer.

1. A
   (i), (ii) and (iv) only
2. B
   (ii), (iii) and (iv) only
3. C
   (i), (iv) and (v) only
4. D
   (ii), (iii) and (v) only

Tap an option to check your answer.

1. A
   Green
2. B
   Red
3. C
   Brown
4. D
   Blue

Tap an option to check your answer.

1. A
   Na
2. B
   $\text{H}_2$
3. C
   $\text{H}_2\text{O}$
4. D
   NaOH

Tap an option to check your answer.

1. A
   (i) and (ii)
2. B
   (iii) and (iv)
3. C
   (ii) and (iii)
4. D
   (i) and (iv)

Tap an option to check your answer.

1. A
   Keeping petrol in a china dish in the open.
2. B
   Storing of oxygen gas under pressure in a gas cylinder.
3. C
   Liquefaction of air.
4. D
   Heating copper wire in presence of air at high temperature.

Tap an option to check your answer.

1. A
   2, 4
2. B
   2, 3
3. C
   2, 2
4. D
   4, 2

Tap an option to check your answer.

1. A
   Endothermic
2. B
   Combustion
3. C
   Photochemical
4. D
   Exothermic

Tap an option to check your answer.

1. A
   Calcium carbonate
2. B
   Calcium hydroxide
3. C
   Calcium oxide
4. D
   Calcium bicarbonate

Tap an option to check your answer.

1. A
   It is a double displacement reaction since exchange of ions occurs between the two reactants.
2. B
   It is a displacement reaction since chloride ions are replaced by sulphate ions.
3. C
   It is a combination reaction since barium ions combine with sulphate ions to give barium sulphate.
4. D
   It is a neutralisation reaction since an acid reacts with alkali to give a salt.

Tap an option to check your answer.

1. A
   Combination reaction
2. B
   Displacement reaction
3. C
   Decomposition reaction
4. D
   Precipitation reaction

Tap an option to check your answer.

1. A
   Decomposition reaction
2. B
   Displacement reaction
3. C
   All of these
4. D
   Combination Reaction

Tap an option to check your answer.

1. A
   Exothermic Reaction
2. B
   Displacement Reaction
3. C
   Double Displacement Reaction
4. D
   Endothermic Reaction

Tap an option to check your answer.

1. A
   $\text{P}_2\text{O}_5$
2. B
   Slaked lime
3. C
   Quick lime
4. D
   Conc. $\text{H}_2\text{SO}_4$

Tap an option to check your answer.

1. A
   Oxidation reaction
2. B
   Displacement reaction
3. C
   Reduction reaction
4. D
   Redox reaction

Tap an option to check your answer.

1. A
   IV only
2. B
   I and IV only
3. C
   I and III only
4. D
   II and III only

Tap an option to check your answer.

1. A
   $\text{CaCO}_3 \to \text{CaO} + \text{CO}_2$
2. B
   $\text{Pb(NO}_3)_2 \to 2\text{PbO} + 4\text{NO}_2 + \text{O}_2$
3. C
   $2\text{FeSO}_4 \to \text{Fe}_2\text{O}_3 + \text{SO}_2 + \text{SO}_3$
4. D
   $2\text{AgCl} \to 2\text{Ag} + \text{Cl}_2$

Tap an option to check your answer.

1. A
   Decomposition reaction
2. B
   Reduction
3. C
   Redox reaction
4. D
   Oxidation

Tap an option to check your answer.

1. A
   Reactants $\times$ heat $\to$ Products
2. B
   Reactants - heat $\to$ Products
3. C
   Reactants $\to$ Products + heat
4. D
   Reactants $\to$ Products - heat

Tap an option to check your answer.

1. A
   Zinc
2. B
   Copper
3. C
   Copper
4. D
   Sulphate

Tap an option to check your answer.

1. A
   Reactant solution is formed
2. B
   Bubbles are seen
3. C
   Gas is released
4. D
   A white insoluble substance is formed

Tap an option to check your answer.

1. A
   (C)
2. B
   (A)
3. C
   (B)
4. D
   (D)

Tap an option to check your answer.

1. A
   $2\text{H}_2\text{(g)} + \text{O}_2\text{(g)} \to 2\text{H}_2\text{O(l)}$
2. B
   $2\text{H}_2\text{(g)} + \text{O}_2\text{(l)} \to 2\text{H}_2\text{O(l)}$
3. C
   $2\text{H}_2\text{(l)} + \text{O}_2\text{(l)} \to 2\text{H}_2\text{O(g)}$
4. D
   $2\text{H}_2\text{(g)} + \text{O}_2\text{(g)} \to 2\text{H}_2\text{O(g)}$

Tap an option to check your answer.

1. A
   Amphoteric
2. B
   Acidic
3. C
   Neutral
4. D
   Basic

Tap an option to check your answer.