Question 761:

• JAMB 1992

Duralumin consists of aluminium, copper, ?

A. Zinc and gold
B. Lead and maganese
C. Nickle and silver
D. Manganese and magnesium

Question 762:

• JAMB 1992

CaO_s + H₂O_(l) → Ca(OH)_2(s) ΔH -65 kj. The process represented by the above equation is known as?

A. Dissolution
B. Slaking
C. Liming
D. Mortaring

Question 763:

• JAMB 1992

The carbon atoms in ethene are?

A. Sp³ hybridized
B. Sp hybridized
C. Sp² hybridized
D. Not hybridized

Question 764:

• JAMB 1992

Which of the following compounds reacts with sodium metal as well as silver and copper salts ?

A. CH₃C Ξ C—CH₃
B. CH₃CH₂CH_2[sub]3>[/sub]
C. CH₃C Ξ CH
D. CH₃CH = CH CH₃

Question 765:

• JAMB 1992

Which of the following are isomers?

A. Ethanol and dimethyl ether
B. Benzene and methybenzene
C. Ethanol and propanone
D. Trichloromethane and tetrachloromethane