Science MCQs
Practice multiple choice questions with instant feedback. Select an option to see if you're correct.
What is the valency of the hydroxide ion (OH⁻)?
The formula CaCl₂ shows that the valency of calcium is:
Which subatomic particle is directly involved in chemical bonding?
The symbol 'aq' in a chemical formula stands for:
What is the formula for the compound formed between Potassium (K⁺) and Sulfate (SO₄²⁻)?
Which of the following shows the correct electron dot structure for a molecule of nitrogen (N₂)?
What is the formula for Ammonium Sulfate?
How many single covalent bonds are present in a molecule of water (H₂O)?
Which of the following statements about ionic compounds is TRUE?
What is the valency of phosphorus in phosphorus pentachloride (PCl₅)?
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