Which of the following gases may not be dried with concentrated sulphuric acid?
A. HCl
B. N2
C. Cl2
D. SO2
E. NH3

Brass and bronze are both metallic alloys. Which of the following constituents is common to both alloys?
A. Tin
B. Zinc
C. Copper
D. Lead
E. Aluminium

If 30cm3 of oxygen diffuses through a porous pot in 7 seconds, how long will it take 60cm3 of chlorine to diffuse through the same pot, if the vapour densities of oxygen and chlorine are 16 and 36 respectively?

The IUPAC names of the compounds CH3COOH and CH2=CH2 are respectively;

The reaction between an organic acid and an alcohol in the presence of an acid catalyst is known as;

During the electrolysis of copper II sulphate between platinum electrodes, if litmus solution is added to the anode compartment,

A sample of hard water contains some calcium sulphate and calcium hydrogen carbonate. The total hardness may therefore be removed by

Which of the following metals cannot replace hydrogen from water or steam

When each of the nitrates of Potassium, Magnesium and iron is heated,

The pH of four solutions W, X, Y, Z are 4, 6, 8, 10 respectively, therefore