11. Which of the following gases may not be dried with concentrated sulphuric acid?
- A. HCl(g)
- B. NH3
- C. Cl2
- D. SO2
12. A correct electrochemical series can be obtained from Na, Ca, Al, Mg, Zn, Fe, Pb, H, Cu, Hg, Ag, Au by interchanging
- A. Al and Mg
- B. Zn and Fe
- C. Zn and Pb
- D. Pb and H
13. A basic postulate of the kinetic theory of gases is that the molecules of a gas move in straight lines between collisions. This implies that
- A. Collisions are perfectly elastic
- B. Forces of repulsion exit
- C. Forces of repulsion and attraction are in equilibrium
- D. Collisions are inelastic
14. On which of the following is the solubility of a gaseous substance dependent?
I. Nature of solvent
II. Nature of solute
III. Temperature
IV. Pressure
- A. I, II, III and IV
- B. I and II
- C. II only
- D. I, III and IV
15. Which of the following statements is correct about the periodic table?
- A. Elements in the same period have the same number of valence electrons
- B. The valence electrons of the elements in the same period increase progressively across the period
- C.
Elements in the same group have the same number of electron shells
- D. The non-metallic Properties of the elements tend to decrease across each period
16. The periodic classification is an arrangement of the elements
- A. Atomic weights
- B. Isotopic weights
- C. Molecular weights
- D. Atomic weights
17. If 1 litre of 2.2M sulphuric acid is poured into a bucket containing 10 litres of water and the resulting solution mixed thoroughly, the resulting sulphuric acid concentration will be
- A. 2.2M
- B. 1.1M
- C. 0.22M
- D. 0.11M
18. 
In the shown experiment (Fig. 1) the litmus paper will initially
- A. Be bleached
- B. Turn green
- C. Turn red
- D. Turn blue
19.The boiling of fat and aqueous caustic soda is referred to as
- A. Hydrolysis
- B. Esterification
- C. Acidification
- D. Saponification
20. Which of the following pairs of substances will react further with oxygen to form a higher oxide?
- A. CO2 and H2O
- B. N0 and H20
- C. C0 and Co2
- D. SO2 and NO
