Jamb Chemistry Past Questions and Answers

Question 1841:

• JAMB 2015

In countries where the temperature fall below 273k, salt always spilled on the ray road in order to

A. Increase the making point office
B. Increase the density of the ice
C. Make the ice impure
D. Rinse the making point of the ice

Question 1842:

• JAMB 2015

What is the volume of energy required to burn 45cm\(^3\) of mixture at S.T.P

A. 135.0cm³
B. 150.0cm³
C. 45.0cm³
D. 90.0cm³

Question 1843:

• JAMB 2015

The substance that is used in the steel industry for the removal of carbon. Sulphur and phosphorus impurities from pig iron is

A. Oxygen
B. Chlorine
C. Nitrogen
D. Hydrogen

Question 1844:

• JAMB 2015

If glucose is heated on the concentration tetraoxosulphate(iv)acid, it will be dehydrated

A. Carbon
B. Carbon(iv)oxide
C. Ethane
D. Ethanol

Question 1845:

• JAMB 2015

Rare gases are suitable because they

A. Are monoatomic
B. Form ions easily
C. Have duplet or octet electronic configuration in the outermost shells in their atoms
D. Are volatile gases