Search SchoolNGR

Chemistry Past Questions and Answers

Waec Chemistry Questions

Question 1581:

If the oxidation potential of Mg and Al are +2.37 volts and + 1.66 volts respectively, then the Mg would?

SchoolNGR Classroom

A Not replace Al
B Be replaced by Al
C Remain in the solution
D Replace Al

View Answer & Explanation

Question 1582:

consider the reaction represented by the following equation: 2SO\(_2\) + O\(_2\) ⇌ 2SO\(_3\)
A decrease in the pressure of the reaction would

SchoolNGR Classroom

A Decrease in the concentration of SO\(_2\)
B Have no effect on the reaction
C Shift the equilibrium position to the left
D Shift the equilibrium position to the right

View Answer & Explanation

Question 1583:

In a mixture of gases which do not react chemically together, the pressure of the individual gas is?

SchoolNGR Classroom

A Atmospheric pressure
B Vapor pressure
C Total pressure
D Partial pressure

View Answer & Explanation

Question 1584:

Biotechnology is applied in the?

SchoolNGR Classroom

A Treatment of sewage
B Treatment of water
C Purification of chemicals
D Purification of metals

View Answer & Explanation

Question 1585:

which of the following organic compounds has the lowest boiling point?

SchoolNGR Classroom

A C\(_6\)H\(_14\)
B C\(_5\)H\(_12\)
C C\(_4\)H\(_10\)
D ( CH\(_3\) )\(_3\)

View Answer & Explanation

Stay Updated

Follow us on:

Subjects