Chemistry

If Y is an oxidizing agent that reacts with a reducing agent Z. Which of the following is correct?

A. Y increases in oxidation number B. Y becomes reduced C. Z loses protons D. Z gains protons Correct Answer:…

4 years ago

Which of the following will change when a catalyst is added to a chemical reaction?

A. The activation energy B. The potential energy of the reactants C. The heat of the reaction D. the potential…

4 years ago

The commonest feature of reactions at the anode is that?

A. electrons are consumed B. oxidation is involved C. ions are reduced D. electrode dissolves Correct Answer: Option B -…

4 years ago

If an equilibrium reaction has ΔH > 0; the reaction will proceed favourably in the forward direction at?

A. High temperature B. Any temperature C. Low temperature D. Minimum temperature Correct Answer: Option A - High temperature

4 years ago

A change in temperature of a saturated solution disturb the equilibrium between the?

A. Dissolved solute and the solvent B. Solvent and undissolved solute C. Dissolved solute and undissolved solute D. Dissolved solute…

4 years ago

When 10g of sodium hydroxide is dissolved in 1000cm³ of water; the sodium formed is approximately. [Na = 23, H = 1, O = 16]

A. 0.01 mol dm−³ B. 0.10 mol dm−³ C. 0.25 mol dm−³ D. 0.50 mol dm−³ Correct Answer: Option C…

4 years ago

Farmlands affected by crude-oil spillage can be decontaminated by?

A. Adding acidic solution B. Using aerobic bacteria C. Pouring water on the affected water area D. Burning off the…

4 years ago

Which of the following ions is acidic?

A. K+ B. KNO3− C. S²− D. H3O+ Correct Answer: Option D - H3O+ Explanation Acids are substances which produce…

4 years ago

A consequence of global warming is?

A. air pollution B. water pollution C. increased humidity D. flooding Correct Answer: Option D - flooding

4 years ago

The weakest attractive force that can be observed between two molecules is?

A. ionic B. covalent C. coordinate covalent D. van der Waals Correct Answer: Option D - van der Waals

4 years ago