Chemistry
Practice Chemistry MCQs from the Science syllabus.
How many molecules of water are present in 180g of water?
In an exothermic reaction, the enthalpy of products is:
What is the catalyst used in the hydrogenation of vegetable oils?
Which of the following is an example of an addition reaction?
What is the valency of the Nitrogen atom in the Ammonium ion (NH4+)?
During the electrolysis of water, the ratio of hydrogen to oxygen by volume is:
Which of the following describes the 'Contact Process'?
What is the effect of an inhibitor in a chemical reaction?
Which of the following is a salt of a strong acid and a weak base?
Identify the oxidant in the reaction: H2S + HNO3 -> NO2 + S + H2O.
What is the molecular mass of Calcium Carbonate? (Ca=40, C=12, O=16)
Which of the following is a physical property changed during a chemical reaction?
Which of the following is the most abundant metal in the Earth's crust?
Which property allows metals to be drawn into thin wires?