General Knowledge MCQ - English
The hardest substance available on earth is
Gold
Iron
Diamond
Platinum
Answer : C
Free Online Test
View More Related Question
1) In an atomic explosion, enormous energy is released which is due to
conversion of chemical energy into heat energy
conversion of mechanical energy into nuclear energy
conversion of mass into energy
conversion of neutrons into protons
View Answer
2) Quartz crystals normally used in quartz clocks etc. is chemically
silicon dioxide
germanium oxide
a mixture of germanium oxide and silicon dioxide
sodium silicate
View Answer
3) One Joule is equal to
4) Gypsum is added to cement clinker to
increase the tensile strength of cement
decrease the rate of setting of cement
facilitate the formation of colloidal gel
bind the particles of calcium silicate
View Answer
5) The gas usually filled in the electric bulb is
