Organic Compounds - Jamb Chemistry Past Questions and Answers

Question 211:

• JAMB 2004

Sulphur (IV) oxide bleaches by

A. Reduction
B. Oxidation
C. Hydration
D. Adsorption

Question 212:

• JAMB 2004

Carbon is tetravalent because

A. The electrons in both the 2s and 2p orbitals are equivalent
B. The electrons in all the orbitals of carbon are equivalent
C. The 2s and 2p atomic orbitals hybridize
D. All the atomic orbitals of carbon hybridize

Question 213:

• JAMB 2004

Oxyacetylene flame is used for iron-welding because it

A. Makes the iron metals solidify very quickly
B. Combines with oxygen to give a pop sound
C. Evolves a lot of heat when burnt
D. Dissociates to produce carbon (IV) oxide and oxygen

Question 214:

• JAMB 2004

The alkyl group can be represented by the general formula

A. C_nH_2n+1
B. C_nH_2n
C. C_nH_2n+2
D. C_nH_2n-2

Question 215:

• JAMB 2004

An isomer of C₅H₁₂ is

A. Butane
B. 2 – methylbutane
C. 2 – methylpropane
D. 2 – ethylbutane