Jamb Chemistry Past Questions For Year 2015
Question 41
Electronic configuration of an element 13 in the subsidiary energy level is
- A. \( 1s^2 2s^2 2p^6 3s^2 3p^1 \)
- B. \( 1s^22s^2 2p^4 3p^1 3s^1 \)
- C. \( 1s^2 2s^2 2p^6 3s^2 3p^3 \)
- D. \( 1s^1 2s^2 2p^6 3s^2 3p^4 \)
Question 42
Which of the following gives a precipitation when treated with NaOH Solution?
- A. AlCl3
- B. NH4Cl
- C. Na2CO3
- D. CH3COONa
Question 43
PCL5(g)= PCL3(g) + Cl2(g)
In the reaction above, a decrease in pressure will
- A. Decelerate the reaction
- B. Increase yield of Pcl3
- C. Increase the yield of Pcl5
- D. Accurate the reaction
Question 44
According to the kinetic theory an absence in temperature causes the kinetic energy of particles to
- A. decrease
- B. increase
- C. remain constant
- D. be zero
Question 45
what is the pH of 0.00lmoldm3 solution of sodium hydroxide
- A. 14
- B. 13
- C. 12
- D. 11
