Jamb Chemistry Past Questions For Year 2022
Question 11
An organic functional group which can likely decolorize ammoniacal silver nitrate is?
- A. alkene
- B. alkane
- C. alkyne
- D. alkanol
Question 12
Zn + 2HCL → ZnCl\(_2\) + H\(_2\)
What happens to zinc in the above reaction?
- A. oxidized
- B. a reactant
- C. reduced
- D. a metal
Question 13
N\(_2\)O\(_4\) ⇔ 2NO\(_2\) (Δ = -ve)
From the reaction above, which of these conditions would produce the highest equilibrium yield for N\(_2\)O\(_4\)?
- A. Low temperature and high pressure
- B. Low temperature and low pressure
- C. high temperature and low pressure
- D. high temperature and high pressure
Question 14
In which of the following will hydrogen form ionic compound?
- A. HCL
- B. NaH
- C. NH\(_3\)
- D. CH\(_4\)
Question 15
2H\(_2\) + O\(_2\) → 2H\(_2\)O
From the equation above, calculate the volume of unreacted oxygen gas if a mixture of 50cm\(^3\) of hydroden and 75cm\(^3\) of oxygen are involved
- A. 85cm\(^3\)
- B. 50cm\(^3\)
- C. 125cm\(^3\)
- D. 55cm\(^3\)
