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.

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.

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 reactive 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.

 

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

Miracle Learning Centre (O Level Chemistry Tuition/ IP Chemistry Tuition)

Did you answer the Secondary Chemistry Tuition Question correctly?

 

33.B

34.A

35.B

36.D

 

Learn from our Chemistry Tuition Question and Answer.

Miracle Learning Centre Call 6463 8756 or sms 8128 8342/9839 9908.

(Specialist in Science and Maths) for Primary, Secondary and JC levels.

Miracle Learning Centre specialises in Physics tuition, Chemistry tuition, Maths tuition and Science tuition Classes.