Reaction of Acids and bases with Metals

Q.

Metal oxides react with dilute acids and does not form salt and water.

1. True

2. False

Q.

Choose the metal that does not react with acid to give off hydrogen-

1. Cu

2. K

3. Na

4. Al

Q.

Metals generally react with dilute acids to produce hydrogen gas. Which one of the following metals does not react with dilute hydrochloric acid?​

1. magnesium

2. aluminium

3. iron

4. copper

Q. Which of these metals do not react with dilute acids?

1. $Ag$
2. $Fe$
3. $Na$
4. $Zn$

Q.

Acids do not react with metals except with Zn, Al and Sn.

1. False

2. True

Q.

Which of these reactions is not possible?

1. $Cu+A{l}_2(S{O}_4{)}_3\to$
2. $Fe+CuS{O}_4\to$
3. $K+ZnC{l}_2\to$
4. $Mg+AgN{O}_3\to$

Q. Which of these reactions release a gas which burns with a pop sound?

1. $Cu+HCl\to$
2. $K+HCl\to$
3. $NaOH+H_{2}S{O}_4\to$
4. $CaC{O}_3+H_{2}S{O}_4\to$

Q.

Acids dissolve most metals, which special mixture of acids is used to dissolve gold?

1. Aqua Regia

2. Aqua Fortis

3. Aqua Fresca

4. Aqua Vitriola

Q. Which of the following is a test for hydrogen gas?

1. It turns blue litmus red.
2. It turns lime water milky.
3. It burns with a pop sound.
4. It turns red litmus blue.

Q. Identify X and Y in the following chemical reaction.

$\text{NaOH(aq)}+\text{X}\to {\text{Na}}_2{\text{ZnO}}_2\text{(aq)}+\text{Y}$

1. X is Na and Y is hydrogen.
2. X is Cu and Y is water.
3. X is Zn and Y is water.
4. X is Zn and Y is hydrogen.

Q.

Choose the correct option:

1. Salt formed during the reaction between acid and metal.

2. Metals displaces hydrogen gas while reacting with acids. They also produce salt.

3. Metal does not displace hydrogen gas from the base.

4. Metal displaces hydrogen gas from the acid.

Q.

Salts are formed when:

1. Metal reacts with acid/base

2. Acid and Base reacts with each other

3. Metallic oxide reacts with acids

4. All of the given options are correct.

Q. Which of these reactions releases hydrogen gas?

1. $Na+HCl\to$
2. $N{a}_{2}C{O}_3+HCl\to$
3. $NaHC{O}_3+HCl\to$
4. $NaOH+HCl\to$