Organic Compounds - Jamb Chemistry Past Questions and Answers

Question 106:

• JAMB 1990

Coal fire should not be used in poorly ventilated rooms because ?

A. Of the accumulation of CO₂ which causes dep sleep
B. It is usually too hot
C. Of the acumulation of CO which causes suffocation
D. It removes most most of the gases in the rooms

Question 107:

• JAMB 1990

A cycloalkane with the molecular formula C₅H₁₀ has ?

A. One isomer
B. Two isomers
C. Three isomers
D. Four isomers

Question 108:

• JAMB 1990

The label on a reagent bottle containing a clear organic liquid dropped off.The liquid was neutral to litmus and gave a colourless gas with metallic sodium. The liquid must be an?

A. Alkanoate
B. Alkaene
C. Alkanol
D. Alkane

Question 109:

• JAMB 1990

Alkaonic acids have low volatility compared with alkanols because they?

A. Are more polar than alkaonls
B. Have two oxygen atoms while alkanols have one
C. Form hydrogen bonds while alkanols do not
D. Form two hydrogen bonds while alkanols form one

Question 110:

• JAMB 1990

The octane number of a fuel whose performance is the same as that of a mixture of 55 g of 2,2,4- trimethly pentane and 45 g of n-heptane is ?

A. 45
B. 55
C. 80
D. 100