Chemical Equations MCQ (Multiple Choice Questions) PDF Download

Consider the equation: Ca⁺² (aq) + 2OH^- (aq) → Ca(OH)₂ (s). The precipitate of calcium hydroxide will be of

1. green color
2. blue color
3. brown color
4. white color

Consider the equation: Cu⁺²_(aq) + 2OH^-_(aq) → Cu(OH)_2(s). The precipitate of Copper Hydroxide (Cu(OH)₂) will be of

1. green color
2. blue color
3. brown color
4. white color

Consider the equation: Pb+2 (aq) + 2OH- (aq) → Pb(OH)₂ (s). The precipitate of lead (II) hydroxide will be of

1. green color
2. blue color
3. brown color
4. white color

In writing chemical equations, the inclusion of state symbols shall be done while the

1. correct chemical formula of reactants and products are written
2. equation is being balanced to fulfill the law of conservation of mass
3. equation has been balanced
4. chemical formulae of products and reactants have been changed to bring about quick balancing

Consider Calcium Carbonate (CaCO₃) and Hydrochloric Acid (HCl) as reactants, molecules of Hydrochloric Acid (HCl) required to balance the equation will be

1. 1
2. 2
3. 3
4. 4