Chemistry Multiple Choice Questions (MCQ)

05 May Chemistry Multiple Choice Questions (MCQ)

33        Dry hydrogen gas is passed over a powdered solid and then through a cooled U-tube before the excess of hydrogen is burned in air.

chemistry_tuition_q

A colourless liquid collects in the U-tube.

What could the powdered solid be?

 

A          calcium oxide

B          copper(II) oxide

C          magnesium

D          zinc oxide

 

34        The element chromium liberates hydrogen from dilute hydrochloric acid although it does not react with cold water. When a piece of chromium is placed in lead(II) nitrate solution, crystals of lead appear.

 

What is the order of decreasing reactivity of the metals lead, calcium and chromium?

 

A          calcium, chromium, lead

B          calcium, lead, chromium

C          chromium, calcium, lead

D          lead, chromium, calcium

 

35        Three different beakers are set up as shown.

chemistry_tuition_q

In beaker 1 metal W is displaced from solution.

In beaker 2 metal X is displaced from solution.

In beaker 3 metal Y is displaced from solution.

 

What is the order of decreasing reactivity of the four metals?

 

most reactivechemistry_tuition_q least reactive
A
B
C
D
W
Z
Z
X
X
W
X
Y
Y
X
W
W
Z
Y
Y
X

36        Poly(ethene) can be manufactured by the process below.

chemistry_tuition_q

 

Which diagram shows the change in molecular size during this process?

chemistry_tuition_q

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Did you answer the Secondary Chemistry Tuition Question correctly?

 

33.B

34.A

35.B

36.D

 

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