Neutralisation Reaction

Q. Hydrochloric acid reacts with sodium hydroxide solution to form ______ and water.

1. sodium
2. oxygen
3. sodium carbonate
4. sodium chloride

Q.

Name the species that when reacts with hydrochloric acid evolves carbon dioxide gas.

Q.

What will be the colour change when phenolphthalein is added to ammonium hydroxide?

1. Colourless

2. Blue

3. Green

4. Pink

Q. $\text{NaOH(aq)}+\text{HCl(aq)}\to$ + ${\text{H}}_2\text{O(l)}$
This is an example of a reaction.

1. $\text{NaCl}$(aq)
2. $\text{NaH}$(s)
3. neutralisation
4. combination

Q.

Name three chemicals made from common salt or Sodium Chloride.

Q.

Assertion: In a neutralization reaction an acid combines with a base to form salt and water.

Reason: In all neutralization reactions ${\mathrm{H}}^{+}$ ions of the acid combine with ${\mathrm{OH}}^{-}$ ions of the base to form ${\mathrm{H}}_2\mathrm{O}$.

1. If both assertion and reason are true and the reason is the correct explanation of assertion.

2. If both assertion and reason are true but the reason is not the correct explanation of assertion.

3. If the assertion is correct but the reason is incorrect.

4. If the assertion is incorrect but the reason is correct.

Q.

The aqueous solution of which of the following turns phenolphthalein pink?

1. $\mathrm{NaCl}$

2. $\mathrm{KCl}$

3. ${\mathrm{Na}}_2{\mathrm{CO}}_3$

4. ${\mathrm{NH}}_4\mathrm{Cl}$

Q. When we dip ___ litmus paper in an acidic medium it will turn into ___.

Q.

Define and give one suitable example of each of the following:

(a) Precipitation
(b) Neutralisation

Q.

Give any two important uses of neutralisation reaction in daily life.

Q. Which of the following should be added to an acidic solution to make it neutral?

1. Base
2. Can’t be said
3. Acid
4. Salt

Q.

What is neutralization of acids and bases?

Q.

What do you observe when

(a) an acid is added to a basic solution.

(b) ammonium chloride is dissolved in water.

Q.

What is an antacid? Give one example of an antacid and explain its working.

Q. Explain why an antacid tablet is taken when you suffer from acidity.

Q.

1. What is the definition of acidic salts?
2. Write an equation for preparation of aqueous salt.
3. What will happen when bases react with metals? [3 MARKS]

Q. The reaction between an acid and a base to form a salt is called ______.

1. Combination
2. Addition
3. Neutralization
4. Decomposition

Q.

In the given experiment, the water rises because

1. Air pressure increases inside the tube due to phosphorus.

2. Air is absorbed by the cotton and the water rises to take up its place.

3. Water rises in any test tube if it is inverted in a water tub.

4. Oxygen is used up in the tube and the water rises to take up its place.

Q.

Describe the process of neutralization with the help of an example?

Q. Arrange the metals in the decreasing order of their reactivity with acids.
Mg, Al, Fe, Cu, Au.

Q. Arrange the metals in the decreasing order of their reactivity with acids.
Mg, Al, Fe, Cu, Au.

Q. Describe the process of neutralisation with the help of an example.

Q. In a chemical reaction the undergo chemical changes to form new .

1. acids
2. products
3. reactants
4. catalysts

Q.

Identify X in the following reaction:
$Ca(OH{)}_2+2X$ $\to$ $CaC{l}_2+2H_{2}O$

1. $H_{2}S{O}_4$

2. $HN{O}_3$

3. $HCl$

4. None of these

Q. Mixture of acid with base to produce salt and water is a neutralization reaction.

Q. Identify the correct reactant and product(s) among the following options when the reactant reacts with hydrochloric acid.

1. Reactant - Sodium chloride
   Product - Sodium hydorxide

2. Reactant - Sodium hydroxide
   Product - Sodium chloride

3. Reactant - Sodium hydroxide
   Product - Sodium chloride + water

4. Reactant - Sodium chloride
   Product - Sodium hydroxide + water

Q. An acid turns litmus solution .

1. blue
2. red
3. green
4. yellow

Q. Indigestion is caused when the amount of hydrochloric acid in the stomach .

1. increases
2. decreases
3. remains same

Q.

What is neutralisation?

Q.

Which of these following substances will neutralise each other?

1. Hydrochloric acid and potassium hydroxide.

2. Sodium hydroxide and potassium hydroxide

3. Sulphuric acid and water.

4. Hydrochloric acid and sulphuric acid.