Post Utme Chemistry Past Questions and Answers

Question 376:

Which of the following compounds of tin is a strong reducing agent?

A. \(\mathrm{SnCl}_{1}\)
B. \(\mathrm{SnCL}_{4}\)
C. \(\mathrm{SnO}_{2}\)
D. \(\mathrm{SnH}_{4}\)

Question 377:

Which of the following pairs are both substances deliquescent?

A. \(\mathrm{CaCl}_{\text {, and }} \mathrm{H}, \mathrm{S}, \quad\)
B. \(\mathrm{NaOH}\) and \(\mathrm{MgSO}, 7 \mathrm{H}, \mathrm{O}\)
C. \(\mathrm{CaCl}_{2}\) and \(\mathrm{NaOH}\)
D. CuO and \(\mathrm{NaCl}\)\begin{array}{ccc}\mathrm{C}^{.} \mathrm{CaCl}_{2} \text { and } \mathrm{NaOH} & \text { D. CuO and } \mathrm{NaCl}\)

Question 378:

An alkene may be converted to an alkane by ____________

A. Halogenation
B. Hydrolysis
C. Dehydration
D. Hydrogenation

Question 379:

The product of the reaction between ethanol and excess acidified \(\mathrm{K}_{2} \mathrm{Cr}_{3} \mathrm{O}\), is ____________

A. Ethanal
B. Ethylethanoate
C. Ethanoicacid
D. Ethyne

Question 380:

What does the following equation illustrate? \({ }^{2 \mathrm{n}} / \mathrm{w}_{2} \quad \mathrm{U}^{2 \mathrm{U}} \mathrm{Th}+{ }_{2} \mathrm{He}\)

A. Nuclear fission
B. Nuclear fusion
C. Artificial radioactivity
D. Spontaneous disintegration