1
2
3
4
11
Correct answer is C
No explanation has been provided for this answer.
Which of the following is not a direct petroleum product?
Methane
Ethanol
Petrol
Vaseline
Kerosene
Correct answer is D
No explanation has been provided for this answer.
Which of the reactions represented by the following equations will take place at room temperature?
C 6 H2O → CO + H2
CuO + H2 → Cu + H2O
N2 + 3H2 → 2NH3
2Na + 2H2O → 2NaOH + H2
2Fe + 3CI2 → 2FeCI3
Correct answer is D
No explanation has been provided for this answer.
When starch undergoes complete enzyme-catalyzed hydrolysis, the resulting product is
glucose
maltose
sucrose
fructose
cellulose
Correct answer is A
No explanation has been provided for this answer.
In the redox reaction represented by the following equation: Cu2+aq + Zn(s) → Cu(s) + Zn2+
the oxidation number of copper increases
copper (ll) ions are reduced to copper atoms
zinc atoms are reduced to zinc ions
copper (ll) ions donate electrons to zinc atoms
Correct answer is B
No explanation has been provided for this answer.