Search SchoolNGR

Chemistry Past Questions and Answers

Waec Chemistry Questions

Question 156:

CH₂ = CH₂ + H₂SO₄ â†’ CH₃ - CH₂ -OSO₃H. The reaction illustrated by the equation above is an example of

SchoolNGR Classroom

A Substitution
B Oxidation
C Reduction
D Addition
E Displacement

View Answer & Explanation

Question 157:

Brass is an alloy of copper and

SchoolNGR Classroom

A Iron
B Chromium
C Zinc
D Tin
E Magnesium

View Answer & Explanation

Question 158:

Which of the following formula is that of a dicarboxylic acid?

SchoolNGR Classroom

A (CH₃CH ₂)₂CHCOOH
B CH₂(OH)₂
C CH₃CH(OH)COOH
D CH₂(COOH)₂
E CH₃COCOOH

View Answer & Explanation

Question 159:

The products of the electrolysis of dilute sodium chlorid solution with platinum electrodes are

SchoolNGR Classroom

A Hydrogen and oxygen
B Oxygen and chlorine
C Chlorine and water
D Sodium amalgam and chlorine
E Sodium hydroxide and water

View Answer & Explanation

Question 160:

Which of the following modes of motion is exhibited by the particles of a solid?

SchoolNGR Classroom

A Vibrational and random motion
B Vibrational and translational motion
C Translational and random motion
D Vibrational motion only
E Translational motion only

View Answer & Explanation

Stay Updated

Follow us on:

Subjects