Chemistry
Practice Chemistry MCQs from the Science syllabus.
In the reaction CuO + H2 -> Cu + H2O, which substance is being reduced?
Which gas has a pungent smell and turns moist red litmus blue?
What does the symbol (aq) stand for in a chemical equation?
Which factor does NOT increase the rate of reaction between a solid and a liquid?
What is the molecular weight of Water (H2O)? (H=1, O=16)
In the reaction Zn + CuSO4 -> ZnSO4 + Cu, which element is displaced?
What is the positive catalyst used in the manufacture of oxygen from potassium chlorate?
Identify the type of reaction: AgNO3(aq) + NaCl(aq) -> AgCl(s) + NaNO3(aq).
Which of the following is a reducing agent in the reaction: H2S + Cl2 -> 2HCl + S?
Balance the following: aFe + bCl2 -> cFeCl3. What are the coefficients?
What happens to the rate of reaction if the concentration of reactants is decreased?
Which metal does not react with dilute acids to produce hydrogen gas?
What is the name of the reaction where an organic compound reacts with oxygen to produce CO2 and H2O?
Which catalyst is used in the Haber's process for the synthesis of ammonia?