Post Utme Economics Past Questions and Answers

Question 991:

Which of the following zones is NOT part of a non-luminous Bunsen flame?

A. Blue zone
B. Unburnt
C. Bright yellow luminous zone
D. Non - luminous zone

Question 992:

Which of the following is a secondary air pollutant?

A. Particulate dust
B. Sulphur (IV) oxide
C. Ozone
D. Chlorofluorocarbons

Question 993:

Ammonia can be obtained from diammonium tetraoxosulphate $(\mathrm{VI})$ by heating it with ____________

A. Dilute $\mathrm{HCl}$
B. Con ${\mathrm{H}}_2{\mathrm{SO}}_4$
C. ${\mathrm{CuSO}}_4$
D. $\mathrm{NaOH}$

Question 994:

Which of the following compounds is a soapless detergent?

A. ${\mathrm{C}}_{12}{\mathrm{H}}_{25}{\mathrm{OSO}}_3\mathrm{Na}$
B. ${\mathrm{C}}_{17}{\mathrm{H}}_{25}\mathrm{COONa}$
C. ${\mathrm{C}}_6{\mathrm{H}}_5\mathrm{OH}$
D. ${\mathrm{C}}_4{\mathrm{H}}_9{\mathrm{COOC}}_2{\mathrm{H}}_5$

Question 995:

A motor - car is uniformity retarded and brought to rest from a speed of $90\mathrm{km}/\mathrm{h}$ in $10\mathrm{s}$. Find its acceleration.

A. $25{\mathrm{ms}}^{-1}$
B. $2.5{\mathrm{ms}}^{-2}$
C. $-2.5{\mathrm{ms}}^{-}$ ${}^2$
D. $-2.5{\mathrm{ms}}^{-1}$