SECTION A: MC Questions (Total 10 marks) Answer ALL questions.
1. Which of the following is an electronic configuration?
A. 2nĀ²
B.
(x)
C. nsĀ² (n+1)sĀ² (n+1)pā¶
D. Electron-in-box diagram
E. All of the above.
2. Which of the following species has NO 4s electron(s)?
i. Kāŗ
ii. Caāŗ
iii. ZnĀ²āŗ
iv. GaĀ²āŗ
A. i and iii
B. ii and iv
C. iii and iv
D. i, ii and iii
E. ii, iii and iv
3. Which of the following compound(s) has/have an unpleasant smell?
i. Carboxylic acid
ii. Amine
iii. Ester
iv. Ether
A. i and ii
B. iii and iv
C. i, ii and iii
D. i, iii and iv
E. ii, iii and iv