Jamb Chemistry 2020 Past Questions and Answers

Question 31:

• JAMB 2020

The chlorinated alkane often used industrially to remove grease is?

A. Tetrachloromethane
B. Chloromethane
C. Trichloromethane
D. Dichloromethane

Question 32:

• JAMB 2020

What mass of water is produced when 8.0g of hydrogen reacts with excess oxygen?

A. 8.0g
B. 16.0g
C. 36.0g
D. 72.0g

Question 33:

• JAMB 2020

Proteins in acid solution undergo?

A. Substitution
B. Fermentation
C. Hydrolysis
D. Polymerisation

Question 34:

• JAMB 2020

The general formula for the Alkanals is?

A. R\(_2\)CO
B. RCHO
C. ROH
D. RCOOR

Question 35:

• JAMB 2020

When cathode rays are deflected onto the electrode of an electrometer, the instrument becomes?

A. Bipolar
B. Negatively charged
C. Positively charged
D. Neutral