Chemistry
Practice Chemistry MCQs from the Science syllabus.
Which substance is used as a dehydrating agent in the lab preparation of Chlorine?
What is the total number of atoms in one molecule of Sulphuric Acid?
In the reaction MnO2 + 4HCl -> MnCl2 + 2H2O + Cl2, which substance is oxidized?
How many grams of Oxygen are needed to burn 12g of Magnesium completely? (Mg=24, O=16)
What is the electronic definition of a reducing agent?
Which of the following reactions will not occur spontaneously?
In the lead-chamber process, which substance acts as a catalyst?
What is the change in oxidation number of Nitrogen in the reaction: N2 + 3H2 -> 2NH3?
Which factor increases the frequency of effective collisions according to Collision Theory?
What is the correct coefficient for H2O in the balanced equation: C3H8 + 5O2 -> 3CO2 + _H2O?
Which of the following is an example of an intramolecular redox reaction?
If the activation energy of a reaction is very high, the reaction will be:
What is the percentage by mass of Nitrogen in Urea [NH2CONH2]? (N=14, H=1, C=12, O=16)
The reaction between Silver Nitrate and Potassium Iodide is an example of:
What is the effect of increasing pressure on the equilibrium: N2 + 3H2 <=> 2NH3?
In the reaction 2FeCl2 + Cl2 -> 2FeCl3, Chlorine acts as:
What volume of CO2 is produced at STP when 10g of CaCO3 is heated? (Ca=40, C=12, O=16)