Science Quiz Questions
Science Quiz Questions
Science Quiz Questions
(C) Methane
(D) Athens
16. What is a mixture of potassium nitrate powdered charcoal and sulphur called?
A. paint
B. glass
C. gun powder
D. cement
19. Brass gets discoloured in the air because of the presence of which of the following gases in
air?
A. Oxygen
B. Hydrogen Sulphide
C. Carbon dioxide
D. Nitrogen
20. Which of the following is a non-metal that remains liquid at room temperature?
A. Phosphorous
B. Bromine
C. Chlorine
D. Helium
24. Bromine is a
A. black solid
B. red liquid
C. colourless gas
D. highly inflammable gas
25. The variety of coal in which the deposit contains recognisable traces of the original plant
material is
A. bitumen
B. anthracite
C. lignite
D. peat
27. The inert gas which is substituted for nitrogen in the air used by deep sea divers for
breathing, is
A. Argon
B. Xenon
C. Helium
D. Krypton
28. The gases used in different types of welding would include
A. oxygen and hydrogen
B. oxygen, hydrogen, acetylene and nitrogen
C. oxygen, acetylene and argon
D. oxygen and acetylene
29. The property of a substance to absorb moisture from the air on exposure is called
A. osmosis
B. deliquescence
C. efflorescence
D. desiccation
33. 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
38. Which of the following was to be discovered first in the chromospheres of the sun?
A. Krypton
B. Xenon
C. Neon
D. Helium