Organic Compounds - Jamb Chemistry Past Questions and Answers

Question 226:

• JAMB 2005

In the purification of impure samples of ethyl ethanoate synthesized by esterification, concentrated sodium trioxocarbonate (IV) solution is used to remove

A. Water
B. Basic impurities
C. Acidic impurities
D. Ethoxyethane

Question 227:

• JAMB 2005

How many hydrogen atoms does a single ring cycloalkane have less than the corresponding open-chain alkane?

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

Question 228:

• JAMB 2005

Equal moles of ethyne and hydrogen iodide react to give

A. CH₂ = CH₂
B. CH₂ - CHI
C. CH₃ - CI
D. CH₂ = CHI

Question 229:

• JAMB 2005

A substance that is used as a ripening agent for fruits is

A. Ethene
B. Propene
C. Methane
D. Butane

Question 230:

• JAMB 2005

The component of an atom that contributes least to its mass is the

A. Proton
B. Nucleus
C. Neutron
D. Electron