Jamb Chemistry 1991 Past Questions and Answers

Question 46:

• JAMB 1991

Which of the following are the products of the reaction between CH₃COOH and CI₂ in sunlight?

A. CICH₂COOH + HCI
B. CH₃COCI + HOCI
C. CH₃COOCI + HCI
D. CH₃COCI + HO₂

Question 47:

• JAMB 1991

Which of these is an acid salt?

A. K₂SO_4-.AI₂(SO₄)₃.24H₂O
B. CuCO₃.Cu(OH)₂
C. NaHS
D. CaOCI_2-

Question 48:

• JAMB 1991

The electrons of two atoms Y and Z are arranged in shells as shown above. The bond formed between the atoms of Y and Z is

A. Ionic
B. Covalent
C. Dative
D. Metallic

Question 49:

• JAMB 1991

50 cm³ of sulphur (lV) oxide, 800 cm³ of carbon (IV) oxide will respectively saturate 1.0cm³ of water at 15^oC. Which of the following is suitable for demonstrating the fountain experiment?

A. Sulphur (IV) oxide and hydrogen chloride.
B. Carbon (IV) oxide and ammonia
C. Ammonia and hydrogen chloride
D. Carbon (IV) oxide and Sulphur (IV) oxide

Question 50:

• JAMB 1991

The data in the table above shows the rate of reaction of nitrogen (ll) oxide with chlorine at 25^oC It can be concluded that doubling the initial concentration of NO increase the rate of reaction by a factor of

A. Two
B. Three
C. Four
D. Five