Chemistry
Practice Chemistry MCQs from the Science syllabus.
If a piece of magnesium is placed in a solution of Zinc Sulfate, what will happen?
Which of these is the correct balanced equation for the decomposition of Potassium Chlorate?
In the reaction $MnO_2 + 4HCl \rightarrow MnCl_2 + 2H_2O + Cl_2$, which substance is oxidized?
Why is food cooked faster in a pressure cooker?
Which of the following will have the fastest reaction rate with 1M HCl?
What is the identity of the 'reducing agent' in the reaction: $2Al + 3Fe^{2+} \rightarrow 2Al^{3+} + 3Fe$?
Which of the following reactions is used to test for Carbon Dioxide gas?
A catalyst that slows down the rate of a reaction is known as a/an:
What is the number of moles of CO2 produced when 1 mole of CaCO3 is decomposed by heat?
In the reaction $Zn + 2HCl \rightarrow ZnCl_2 + H_2$, what is the role of Zn?
Which of the following equations represents a reversible reaction?
When copper(II) nitrate is heated, it produces copper(II) oxide, nitrogen dioxide, and oxygen. This is an example of:
In which of the following conditions will Iron rust fastest?
What is the coefficient of O2 when the reaction $C_3H_8 + O_2 \rightarrow CO_2 + H_2O$ is balanced?
Which of the following is the most active metal among those given?
What is the net ionic equation for the neutralization of a strong acid and a strong base?
During the electrolysis of acidified water, which gas is collected at the cathode?
What type of reaction releases energy in the form of light only (without significant heat)?
In the reaction: $2PbO + C \rightarrow 2Pb + CO_2$, carbon acts as: