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Q: According to the Arrhenius concept which of the following is not an acid?

A) HCl

B) H₂SO₄

C) CO₂

D) HNO₃

Answer: C. CO₂

Q: AlCl₃ is an acid according to which concept?

A) Arrhenius

B) Lowry and Bronsted

C) Lewis

D) All of these

Answer: C. Lewis

Q: Which of the following is a Lewis base?

A) HCl

B) AlCl₃

C) BF₃

D) F-

Answer: D. F-

Q: Neutral solution has a pH value of

A) 3

B) 5

C) 7

D) 14

Answer: C. 7

Q: The pOH of 0.001 M solution of nitric acid is

A) 0.001

B) 10.0

C) 11

D) 14

Answer: B. 10.0

Q: When a strong base and weak acid react the only products are

A) Neutral salt and water

B) Basic salt and water

C) Acidic salt and water

D) Acidic and basic salt and water

Answer: B. Basic salt and water

Q: NH₃ is a base according to which concept?

A) Arrhenius

B) Lowry and Bronsted

C) Lewis

D) Both b and c

Answer: C. Lewis

Q: Which one of the following is a basic salt?

A) KCl

B) NaCl

C) Pb(OH)CL

D) KHSO₄

Answer: C. Pb(OH)CL

Q: The bases which are soluble in water are called

A) Acids

B) Alkalis

C) Salts

D) Amphoteric substances

Answer: B. Alkalis

Q: The example of weak acid is

A) HNO₃

B) CH₃COOH

C) HCl

D) H₂SO₄

Answer: B. CH₃COOH

Q: Froth flotation process is concentration of ore by

A) Magnetically

B) Difference in density

C) Wetting the ore

D) Chemically

Answer: C. Wetting the ore

Q: All are the raw materials for the manufacturing of soda ash except

A) Ammonia

B) Lime stone

C) Brine

D) Carbon Monoxide

Answer: D. Carbon Monoxide

Q: Matte is a mixture of

A) CuS and FeS

B) Cu₂S and FeS

C) Cu₂O and FeS

D) Cu₂O and FeO

Answer: B. Cu₂S and FeS

Q: The impurity present in mineral is called

A) Metal

B) Brine

C) Ore

D) Gangue

Answer: D. Gangue

Q: All are the raw materials for the manufacturing of urea except

A) CO₂

B) NH₃

C) CH₄

D) NaCl

Answer: D. NaCl

Q: Percentage of nitrogen in urea is

A) 14%

B) 28%

C) 60%

D) 46%

Answer: D. 46%

Q: Blister copper is refined through

A) Concentration

B) Reduction

C) Smelting

D) Electrolysis

Answer: D. Electrolysis

Q: Petroleum is separated into different fractions by the process of

A) Simple distillation

B) Condensation

C) Fractional distillation

D) Destructive distillation

Answer: D. Destructive distillation

Q: All steps are used for the extraction of metals except

A) Roasting

B) Smelting

C) Evaporation

D) Bessemerization

Answer: C. Evaporation

Q: When Sodium Bicarbonate is heated to get sodium carbonate all are produced except

A) CO

B) CO₂

C) Na₂CO₃

D) Froth

Answer: A. CO