JAMB Past Questions and Answers - Page 1625

8,121.

An element, X, forms a volatile hydride XH3 with a vapour density of 17.0. The relative atomic mass of X is?

(H = 1)

A.

34.0

B.

31.0

C.

20.0

D.

14.0

Correct answer is B

Molecular Mass = Vapour density x 2 = 17.0 x 2 = 34.0
∴ Relative Atomic Mass of X in XH3 = 34 - 3
= 31.0 ∴ x = 31.0

8,122.

The alternate heating and cooling of rocks result in

A.

Sublimation

B.

Volatilization

C.

Fragmentation

D.

Solidification

E.

Sedimentation

Correct answer is C

No explanation has been provided for this answer.

8,123.

What contributed significantly to the rise of early states in Nigeria?

A.

Industrial revolution

B.

Arab trade routes

C.

European colonization

D.

Agricultural advancements

Correct answer is D

Agricultural advancements contributed significantly to the rise of early states in Nigeria. The development of farming led to economic growth and the formation of complex societies and states. It allowed for the production of surplus food, which could support a class of people who did not need to devote their lives to farming.

8,124.

The Magna Carta, signed in 1215, is an important historical document that limited the power of which figure?

A.

Kings and Monarchs

B.

The Pope

C.

Military Generals

D.

Wealthy Merchants

Correct answer is A

The Magna Carta, signed in 1215, is an important historical document that limited the power of Kings and Monarchs. It was a charter of liberties to which the English barons forced King John to give his assent. It is widely viewed as one of the most important legal documents in the development of modern democracy.

 

8,125.

Which initiative was launched by the Buhari administration to tackle corruption in Nigeria?

 

A.

EFCC (Economic and Financial Crimes Commission)

B.

Operation Python Dance

C.

Operation Crocodile Smile

D.

Operation Lafiya Dole

Correct answer is A

The Buhari administration launched the EFCC to tackle corruption in Nigeria.