Common General Science
Periodic Table & Elements
15 questions on elements, symbols, properties, and periodic table basics.
Periodic Table & Elements
15 questions · 10 minutes
10:00
Q1.Total known elements:
Explanation: 118 elements (as of 2024).
Q2.Periodic table by:
Explanation: Dmitri Mendeleev (1869).
Q3.Lightest element:
Explanation: Hydrogen (atomic number 1).
Q4.Symbol of Gold:
Explanation: Au (Latin: Aurum). Ag = Silver.
Q5.Symbol of Sodium:
Explanation: Na (Latin: Natrium).
Q6.Symbol of Iron:
Explanation: Fe (Latin: Ferrum).
Q7.Most abundant metal in crust:
Explanation: Aluminium (~8%).
Q8.Liquid metal:
Explanation: Mercury (Hg). Only metal liquid at room temp.
Q9.Liquid non-metal:
Explanation: Bromine. Only non-metal liquid at room temp.
Q10.Best conductor of electricity:
Explanation: Silver. Copper is 2nd (and cheaper, so more used).
Q11.Most ductile metal:
Explanation: Gold can be drawn into thinnest wire.
Q12.Noble gases are:
Explanation: Noble gases (He, Ne, Ar, Kr, Xe, Rn) are inert — full outer shell.
Q13.Atomic number equals:
Explanation: Atomic number = number of protons in nucleus.
Q14.Graphite and Diamond are allotropes of:
Explanation: Both are pure carbon in different structures.
Q15.Heaviest natural element:
Explanation: Uranium (atomic number 92).
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