Jamb Chemistry 1999 Past Questions and Answers

Question 41:

• JAMB 1999

When excess ethanol is heated to 145^oC in the presence of concentrated H₂SO₄, the product is

A. Ethyne
B. Diethyl sulphate
C. Diethyl ether
D. Acetone

Question 42:

• JAMB 1999

POlyvinyl chloride is used to produce

A. Bread
B. Pencils
C. Ink
D. Pipes

Question 43:

• JAMB 1999

An organic compound that does not undergo a reaction with both hydrogen cyanide and hydroxylamine can be

A. Alkene
B. Alkanal
C. Alkanone
D. Alkanoic acid

Question 44:

• JAMB 1999

When the two end alkyl groups ethyl ethanoate are interchange, the compound formed is known as

A. Methyl ethanoate
B. Ethyl propanaote
C. Methyl propanoate
D. Propyl ethanoate

Question 45:

• JAMB 1999

From the diagram above the mass of crystals deposited when 1 dm ³ of a saturated solution of NaCl is cooled from 80 ^oC to 60^oC is
[Na = 23, Cl = 35.5]

A. 117.00 g
B. 58.50 g
C. 11.70 g
D. 5.85 g