JAMB Past Questions and Answers - Page 1186

5,926.

One of the the differences between bookkeeping and accounting is that the former

A.

Records data while the latter interprets

B.

Is regarded as the language of the business while the latter ascertains its strenght

C.

Interprets data while the latter records it

D.

Summarises information while the latter communicates it

Correct answer is A

No explanation has been provided for this answer.

5,927.

Crude petroleum is converted to useful products by the process of?

A.

fractional crystallization

B.

fractional distillation

C.

filtration

D.

chromatography

Correct answer is B

A process called fractional distillation is used in oil refineries to separate (as well as join or split) the various lengths of hydrocarbon chains to create different petroleum products from the different distillates.

5,928.

An organic compound which decolorizes bromine water is likely to be?

A.

C\(_3\)H\(_8\)

B.

C\(_2\)H\(_6\)

C.

C\(_4\)H\(_10\)

D.

C\(_2\)H\(_4\)

Correct answer is D

If you shake an alkene with bromine water (or bubble a gaseous alkene through bromine water), the solution becomes colourless.

Alkenes decolourise bromine water.

5,929.

In order to electroplate spoon with silver, the arrangement of the electrolytic cell is?

A.

the anode is a silver rod and the cathode is the spoon

B.

the anode is the spoon and the cathode is a silver rod

C.

the electrolyte is silver trioxonitrate(v)( solution and the cathode is a silver rod.

D.

the electrolyte is silver trioxonitrate(v) solution and the anode is the spoon

Correct answer is A

The steel spoon to be coated with silver is the cathode of the electrolytic cell and the anode of the electrolytic cell is made of a silver metal

5,930.

A colored gas that is known to be poisonous and can readily damage the mucous lining of the lungs is?

A.

hydrogen sulphide

B.

carbon(ii)oxide

C.

chlorine

D.

sulphur(iv)oxide

Correct answer is C

Chlorine is a yellow-green gas at room temperature. Chlorine has a pungent, irritating odor similar to bleach that is detectable at low concentrations.

Exposure to low concentrations of chlorine (1 to 10 ppm) may cause eye and nasal irritation, sore throat, and coughing. Inhalation of higher concentrations of chlorine gas (>15 ppm) can rapidly lead to respiratory distress with airway constriction and accumulation of fluid in the lungs (pulmonary edema).