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JAMB 2010 Chemistry Past Questions & Answers (UTME Practice)

Creado por: juanbacan
Free JAMB 2010 Chemistry past questions with answers and clear explanations. Practice online, track your score, and prepare faster for the UTME.Sin descripción disponible.
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Question 21

6AgNO4(aq) + PH3(g) + 3H2O(l) → 6Ag(s) + H3PO3(g) + 6HNO3(aq) In the above reaction, the reducing agent is 

A)

HNO3(aq)

B)

H2O(l)

C)

PH3(g)

D)

AgNO3(aq)

How to solve?

Question 22

The IUPAC nomenclature of the compound LiAlH4 is

A)

lithiumtetrahydridoaluminate (III)

B)

aluminium tetrahydrido lithium

C)

tetrahydrido lithium aluminate (III)

D)

lithium aluminium hydride

How to solve?

Question 23

Iron can be protected from corrosion by coating the surface with

A)

gold

B)

silver

C)

copper

D)

zinc

How to solve?

Question 24

What quantity of aluminium is deposited when a current of 10A is passed through a solution of an aluminium salt for 1930s?

[Al = 27, F = 96500 C mol-1]

A)

0.2 g

B)

1.8 g

C)

5.4 g

D)

14.2 g

How to solve?

Question 25

In which of the following is the entropy change positive?

A)

Thermal dissociation of ammonium chloride

B)

Reaction between an acid and a base

C)

Addition of concentrated acid to water

D)

Dissolution of sodium metal in water

How to solve?

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