Post Utme Chemistry Past Questions and Answers

Question 341:

Which of the following statements is not correct? Cathode rays

A. Are positive charged
B. Travel in straight lines.
C. Are deflected away from negative plates.
D. Are very light,

Question 342:

\(\mathrm{CH}_{3}(\mathrm{E})+2 \mathrm{O}_{,} \mathrm{2H}_{2} \mathrm{O}_{\mathrm{al}}+\mathrm{CO}_{3 \mathrm{H}} \mathrm{l} \quad \Delta \mathrm{H}=89 \textrm{O K}\) enthalpy of:

A. Formation
B. Combustion
C. Activation
D. Neutralization

Question 343:

Compounds that have the same molecular formula but different structures are said to be ____________

A. Isomeric
B. Isotopic
C. Polymeric
D. Allotropic

Question 344:

When a crystal was added to its solution, it did not dissolve and the solution remained unchanged, showing that the solution was ____________

A. Concentrated
B. Unsaturated
C. Colloidal
D. Saturated.

Question 345:

When steam is passed over white-hot coke, the products are ____________

A. Carbon (IV) oxide and nitrogen.
B. Carbon (iI) oxideandhydrogen.
C. Carbon (II) oxide and nitrogen
D. Carbon (IV) oxide and hydrogen.