10 questions · 6 years · 2018–2023
Full NECO SSCE past questions with correct answers. Practice with timed simulations, track your scores, and top the leaderboard.
A substance that can act as both an acid and a base is called
Metallic bonding involves
The empirical formula of a compound containing 40% carbon, 6.7% hydrogen and 53.3% oxygen is (C=12, H=1, O=16)
Gay-Lussac's law states that at constant volume pressure is directly proportional to
The most electronegative element is
A covalent bond is formed by
The shape of a methane (CH₄) molecule is
The electron configuration of sodium (Z=11) is
How many moles of water are produced when 2 moles of hydrogen react with 1 mole of oxygen?
An atom with more electrons than protons is a
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