Post Utme Chemistry Past Questions and Answers

Question 551:

Nigerian crude oil is described as light because of its ____________

A. Low aliphatic-hydrocarbon content
B. Low sulphur content
C. High natural gas content
D. High octane number

Question 552:

Detergent are manufactured with straight hydrocarbon chains so as to make them ____________

A. Soluble
B. Cheaper
C. Non-biodegradable
D. Biodegradable

Question 553:

5CH-4CH2-3CH-C 1CH CH3 I In the structure above carbon two and three are respectively ____________

A. SP2 and SP3-hybridized
B. 20 and 10
C. SP3 hybridized and 30
D. Sp-hybridized and 30

Question 554:

A solution of calcium bromide contains 20dm-3. What is the molarity of the solution with respect to calcium bromide and bromide ions?

A. 0.1
B. 0.1,0.2
C. 0.1,0.05
D. 0.05,0.1

Question 555:

In spite of the electronic configuration of carbon of 1s22s22p2 the atom is tetravalent because ____________

A. The electrons in both 2s and 2p orbital have equal energy
B. The orbital in both 2s and 2p are equivalent
C. Both the 2s and 2p orbitals have equal energy
D. The six orbital hybridize to form four.