Reaction of Acids with Metal Carbonates and Bicarbonates

Q.

What happens when sodium carbonate reacts with hydrochloric acid?

Q. Which of the following substance on reaction with an acid produce carbon dioxide gas?

1. Egg shells
2. Chalk
3. Marble
4. Iron container

Q.

What is the role of tartaric acid in baking powder?

Q. Acid reacts with metal carbonate to give carbon dioxide as one of the products.

1. True
2. False

Q.

What is the property of Nitric Acid which allows it to react with Copper?

Q.

Which of the following compound is added to the Sodium extract before the addition of Silver nitrate for testing of halogens?

1. Nitric acid

2. Sodium hydroxide

3. Hydrochloric acid

4. Ammonia

Q. Nitric acid reacts with "X" to release carbon dioxide gas. Identify X from the given options.

1. Sodium
2. Calcium carbonate
3. Hydrochloric acid
4. Calcium hydroxide

Q.

Assertion: Tartaric acid or Citric acid is added to Baking soda.

Reason: Baking soda as on heating it produces ${\mathrm{Na}}_2{\mathrm{CO}}_3$ which is bitter in taste and is injurious to health

1. The assertion is true, but the reason is false.

2. Both assertion and reason are false.

3. Both assertion and reason are true. The reason is the correct explanation of the assertion.

4. Both assertion and reason are true. The reason is not the correct explanation of assertion.

Q.

How is carbon dioxide gas prepared from metal carbonates?

Q.

A student takes four test tubes marked P, Q, R, and S of 25 mL capacity and fills 10 mL of distilled water in each. He dissolves one spoon full of four different salts in each as - $\mathrm{KCl}\mathrm{in}\mathrm{P},\mathrm{NaCl}\mathrm{in}\mathrm{Q},{\mathrm{CaCl}}_2\mathrm{in}\mathrm{R},\mathrm{and}{\mathrm{MgCl}}_2\mathrm{in}\mathrm{S}$. He then adds about 2mL of a soap solution to each of the above test tubes. On shaking the contents of each of the test tubes, he is likely to observe a good amount of lather(foam) in the test tube marked.

1. P and Q

2. R and S

3. P, Q and R

4. P, Q and S

Q.

Polar covalent bond is when the electrons shared by the atoms spend a greater amount of time, on an average, closer to one nucleus than the other nucleus of the pair.

1. False

2. True

Q.

Write the scientific reason.​
Copper and brass vessels are cleaned with lemon.​

Q. Calculate the number of electrons lost or gained during the changes:
$BaC{l}_2+N{a}_{2}S{O}_4\to BaS{O}_4+2NaCl$

Q.

Complete the following reaction: $N{a}_{2}C{O}_3+H_{2}S{O}_4\to$ ___?

1. $N{a}_{2}S{O}_4+H_{2}O$

2. $N{a}_{2}S{O}_4+C{O}_2$

3. $N{a}_{2}S{O}_4+H_{2}O+C{O}_2$

4. $N{a}_{2}C{O}_3+H_{2}O+C{O}_2$

Q. Lime water turnswhen CO2 is passed through it.

1. milky
2. red
3. blue

Q.

Column A	Column B
A. Bleaching powder	i. Preparation of glass
B. Baking soda	ii. Production of $H_2$ and $C{l}_2$
C. Washing soda	iii. Decolourisation
D. Sodium chloride	iv. Antacid

Match the chemical substances given in Column (A) with their appropriate application given in Column (B).

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

Q.

A molecule should:

1. electrically neutral.

2. should contain two or more atoms.

3. The atoms must be combined with chemical bonds.

4. All the given options are correct.

Q. Limewater turn milky when carbon dioxide gas is passed through it:

1. Due to the formation of calcium carbonate.
2. Due to the formation of calcium hydroxide.
3. Because hydrogen gas is released.
4. Because calcium hydroxide reacts with hydrogen gas.

Q. The acid formed when sulfur dioxide is dissolved in water is _______.

1. sulphurous
2. washing soda
3. water
4. calcium oxide

Q. Which of the following is a type of chemical reaction?

1. Displacement
2. All of above
3. Synthesis
4. Decomposition