Question

3. Ca(OH)2 is
(a) an acid
(b) a salt
(c) a base
(d) an alkali
4. H2SO4 is
(a) an acid
(b) a salt
(c) a base
(d) an alkali
5. CuSO4 is
(a) an acid
(b) a salt
(c) a base
(d) an alkali
6. Which of the following is an organic acid?
(a) HC1
(b) NHO3
(c) CH3COOH
(d) H2SO4
7. Salt is formed when
(a) metals react with acids
(b) metals react with bases
(c) metals react with alkalis
(d) metals react with water
8. CO2 turns lime water milky due to the formation of
(a) CaClo3
(b) CaSO4
(c) Ca(HCO3)3
(d) CaO
9. Which of the following methods is used to obtain chlorine and hydrogen from
sodium chloride?
(a) Neutralisation
(b) Distillation
(c) Electrolysis
(d) Electroplating
10. Which of the following is used for treating indigestion?
(a) Antibiotic
(b) Antacid
(c) Analgesic
(d) Antiseptic​

Answer 1

Correct Question :

3. Ca(OH)2 is

(a) an acid

(b) a salt

(c) a base

(d) an alkali

4. H2SO4 is

(a) an acid

(b) a salt

(c) a base

(d) an alkali

5. CuSO4 is

(a) an acid

(b) a salt

(c) a base

(d) an alkali

6. Which of the following is an organic acid?

(a) HC1

(b) NHO3

(c) CH3COOH

(d) H2SO4

7. Salt is formed when

(a) metals react with acids

(b) metals react with bases

(c) metals react with alkalis

(d) metals react with water

8. CO2 turns lime water milky due to the formation of

(a) CaCO3

(b) CaSO4

(c) Ca(HCO3)3

(d) CaO

9. Which of the following methods is used to obtain chlorine and hydrogen from

sodium chloride?

(a) Neutralisation

(b) Distillation

(c) Electrolysis

(d) Electroplating

10. Which of the following is used for treating indigestion?

(a) Antibiotic

(b) Antacid

(c) Analgesic

(d) Antiseptic

Answer:

3. Ca(OH)2 is

Calcium hydroxide is an alkali as it is a base and is soluble in water.

Therefore, option (d) an alkali is the correct answer.

4. H2SO4 is

Sulphuric acid is an acid and therefore, option (a) an acid is the correct answer.

5. CuSO4 is

Copper Sulphate is an acidic salt and therefore option (b) a salt is the correct answer.

6. Which of the following is an organic acid?

Acetic acid is an organic acid and therefore option (c) CH3COOH is the correct answer.

7. Salt is formed when

Salt is formed when an acid reacts with a base.

Metals are basically basic in nature and therefore option (a) metals react with acids is the correct answer.

8. CO2 turns lime water milky due to the formation of

Carbon dioxide turns lime water milky due to the formation of Calcium carbonate and therefore option (a) CaCO3 is the correct answer.

9. Which of the following methods is used to obtain chlorine and hydrogen from

9. Which of the following methods is used to obtain chlorine and hydrogen fromsodium chloride?

Electrolysis method is used to obtain chlorine and hydrogen from sodium chloride and therefore option (c) Electrolysis is the correct answer.

10. Which of the following is used for treating indigestion?

Antacid is used for treating indigestion and therefore option (b) Antacid is the correct answer.

Answer 2

Answer:

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1. An alkali (D)

Slaked lime which is an organic compound that has the chemical formula as Ca(OH)2

2. An acid (A)

Sulfuric acid has the chemical formula as H2SO4. So the compound is an acid therefore H2SO4 is an acid.

3. Salt (B)

It is the chemical formula of copper sulphate that is an acidic salt. Therefore, it is also a salt.

4. CH3COOH (C)

It is the formula of acetic acid which is an organic acid.

5.Metals react with acid (A)

When a metal react with acid then salt is formed.

6. CaCO3

Carbonic acid causes the acidity in fizzy drinks. Carbon dioxide reacts with limewater (a solution of calcium hydroxide, Ca(OH) 2), to form a white precipitate of calcium carbonate, CaCO 3.

7. Electrolysis

Electrolysis method is used to obtain chlorine and hydrogen from sodium chloride

8. Antacid

Antacid is used for treating indigestion.