Post UTME Chemistry Past Questions with Answers

Post Utme University of Port Harcourt Chemistry Past Questions

Question 11:

What weight of sodium hydroxide is required to make 500 cm³
of 0.2 M solution?
[Na=23, 0=16, H = 1]

A. 40g
B. 20g
C. 10g
D. 4g
E. 2g

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Question 12:

60 {cm}^{3}

of hydrogen are sparked with

20 {cm}^{3}

of oxygen at

100^{'} C

and I atmosphere. The total volume of the residual gas is

A.

60 {cm}^{3}

10 {cm}^{3}

40 {cm}^{3}

30 {cm}^{3}

70 {cm}^{3}

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Question 13:

0.16 g

of methane when burst raises the temperature of

100 g

of water by

40^{\circ} C

. What is the heat of combustion of methane if the heat capacity of water is

4.2 {Jkg}^{-}

Extra \left or missing \right

1, 160 {kJmol}^{- 1}

1, 180 {kJmol}^{- 1}

1, 560 {kJmol}^{- 1}

1, 600 {kJmol}^{- 1}

1, 680 {kJmol}^{- 1}

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Question 14:

Hydrated salt of formula

{MSO}_{4} \cdot {XH}_{2} O

contains

45.3 %

by mass of water of crystallization. Calculate the value of

X

[M = 56, S = 32, O = 16, H = 1]

A. 3
B. 5
C. 7
D. 10

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Question 15:

A given quantity of a gas occupies a volume of

228 {cm}^{3}

at a pressure of

750 mmHg

. What will be its volume at atmospheric pressure?

A.

220 {cm}^{3}

225 {cm}^{3}

230 {cm}^{3}

235 {cm}^{3}

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Post Utme University of Port Harcourt Chemistry Past Questions and Answers

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