Jamb Chemistry 2019 Past Questions and Answers

Question 61:

• JAMB 2019

Hydrogen diffused through a porous plug

A. Thrice as fast as oxygen
B. At the same speed as oxygen
C. Four times as fast as oxygen
D. Twice as fast as oxygen

Question 62:

• JAMB 2019

X is a substance which liberates CO₂ on treatment with concentrated H₂SO₄. A warm solution of X can decolorize acidified KMnO₄. X is

A. HCOOH
B. NaH CO₃
C. FeCO₃
D. H₂C₂O₄

Question 63:

• JAMB 2019

A second alkanol can be oxidized to give an

A. Alkanone
B. Alkyne
C. Alkanoic acid
D. Alkanal

Question 64:

• JAMB 2019

A second alkanol can be oxidized to give an

A. Alkanone
B. Alkyne
C. Alkanoic acid
D. Alkanal

Question 65:

• JAMB 2019

Which of the following will give a precipitate with an aqueous solution of copper (I) chloride?

A. But-2-ene
B. But-1-ene
C. But-2-yne
D. But-1-yne