Salts

Q.

Question 1:

Write any four physical properties of acid?

Q.

Write two examples of naturally occurring substances that are acidic in nature.

Q.

The reaction between an acid and a base is called ……………….reaction.

Q. What is the difference between metal sulphate and metal chloride ??
Eg: Aluminium Chloride and Zinc sulphate (Both are metal salts but why do they have different terms)

Q.

Salts are formed as a result of ____ reaction

1. Precipitation reaction

2. Neutralization reaction

3. Decomposition reaction

4. Combustion reaction

Q. Which of the following is basic in nature?

1. Lemon
2. Apple
3. Curd
4. Caustic soda

Q.

Question 1:

Write any four physical properties of acid?

Q.

Select the salts out of the following elements:

1. HCl 2. NaCl 3. ${Cu\left(OH\right)}_2$ 4. ${CuSO}_4$ 5.${CH}_{3}COOH$

6. ${CH}_{3}COONa$ 7. ${Na}_2{SO}_4$ 8. $H_2{SO}_4$ 9.${Ca\left(OH\right)}_2$ 10. ${CaCl}_2$

1. 1, 3, 8, 6 and 10 are salts

2. 1, 3, 10 and 6 are salts

3. 2, 4, 6, 7 and 10 are salts

4. 2, 6, 7 and 1 are salts

Q.

What is the net reaction involved in acid-base neutralization?

Q. Which of the following is an example of a metal oxide?

1. $MgO$
2. $N{H}_{4}OH$
3. $HCl$
4. $H_{2}S{O}_4$

Q. Common name of sodium hydroxide is while for magnesium hydroxide is .

1. milk of magnesia
2. caustic potash
3. lye
4. plaster of paris

Q.

What is neutralisation reaction? Give two examples. [3 MARKS]

Q.

Sodium hydroxide reacts with acid forming

1. Salt

2. Both A and B

3. Water

4. None of these

Q. A compound which is prepared from gypsum has the property of hardening when mixed with proper quantity of water.
(a) Identify the compound
(b) Write the chemical equation for its preparation
(c) Mention one important use of this compound.

Q. What is the $pH$ of the $NaOH$ solution when $0.04gm$ of it dissolved in water and made to $100ml$ solution?

1. $2$
2. $13$
3. $1$
4. $12$

Q. To make a solution of $pH=12$, the amount of $NaOH$ dissolved in one litre of solution should be:

1. $1.2g$
2. $0.4g$
3. $0.1g$
4. $0.2g$

Q.

Which of the following reacts with acids to release hydrogen gas?

1. Noble gas

2. Metals

3. Non- Metals
4. None of these

Q. Observe the reaction given below and identify the missing product from the options given.

Magnesium + Hydrochloric acid $\to$ Magnesium chloride + ?

a. Hydrogen
b. Chlorine
c. Nitrogen
d. Oxygen

[1 mark]