1000 Best General Science MCQ-Questions
Q25). Heavy water is
a).deuterium oxide
b).PH7
c).rain water
d).tritium oxide
Correct Answer:
deuterium oxide
Explanation:
Q26). The chemical (ethyl mercaptan) added to the otherwise odourless LPG cooking gas for imparting a detectable smell to the gas is a compound of
a).bromine
b).fluorine
c).chlorine
d).sulphur
Correct Answer:
sulphur
Explanation:
Q27). The element common to all acids is
a).hydrogen
b).carbon
c).sulphur
d).oxygen
Correct Answer:
hydrogen
Explanation:
Q28). Non stick cooking utensils are coated with
a).Teflon
b).PVC
c).black paint
d).polystyrene
Correct Answer:
Teflon
Explanation:
Q29). Monazite is an ore of
a).titanium
b).zirconium
c).iron
d).thorium
Correct Answer:
thorium
Explanation:
Q30). Carbon, diamond and graphite are together called
a).allotropes
b).isomers
c).isomorphs
d).isotopes
Correct Answer:
allotropes
Explanation:
Q31). Potassium nitrate is used in
a).medicine
b).fertiliser
c).salt
d).glass
Correct Answer:
fertiliser
Explanation:
Q32). Permanent hardness of water may be removed by the addition of
a).sodium carbonate
b).alum
c).potassium permanganate
d).lime
Correct Answer:
sodium carbonate
Explanation: