JAMB Past Questions and Answers - Page 1684

8,416.

A certain liquid has a high boiling point. It is viscous, non-toxic, miscible with water being very hygroscopic. This liquid is most likely to be?

A.

CH3CH2CH2HO

B.

CH3CHOHCH3

C.

CH3CH2CHOHCH3

D.

CH2OHCHOHCH2OH

View answer & explanation

Correct answer is D

No explanation has been provided for this answer.

8,417.

One advantages of detergents over soap is that detergents?

A.

are easier to maufacture

B.

foam more than soap

C.

form soluble salts with hard water

D.

are able to deter germs more than soap

View answer & explanation

Correct answer is C

No explanation has been provided for this answer.

8,418.

Ethene when passed into concentrated H2SO4 is rapidly absorbed. The product is diluted with water and then warmed to produce?

A.

ethanol

B.

diethyl ether

C.

ethanal

D.

diethyl sulphate

View answer & explanation

Correct answer is A

No explanation has been provided for this answer.

8,419.

How many grams of bromine will be required to completely react with 10 g of propyne?

(C = 12, H = 1, Br = 80)

A.

20 g

B.

40 g

C.

60 g

D.

80 g

View answer & explanation

Correct answer is D

C3H4 + 2Br2 - C3Br4 + 2H2
(36 + 4) (4 X 80)
40 g of C3H4 reacts with 320 g of Br
10 " " will react with
(10)/(40) x (320) /(1) = 80g

8,420.

Which of the following compounds can exist as geometric isomers?

A.

2-methylbut-2ene

B.

But-2-ene

C.

But-1-ene

D.

CI-C-Br

View answer & explanation

Correct answer is B

No explanation has been provided for this answer.


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