Page 378 - General Knowledge

GENERAL KNOWLEDGE 2019

104. When we buy a Jewellery of 22 carat Gold , this means that we are getting a purity of gold
with ______?
A. 90%
B. 91.67%
C. 95.5%
D. 98%

105. An Jewellery was left exposed to the atmosphere for some time and it becomes coated
with green carbonate. The Jewellery is made up of which of the following?
A. Copper
B. Silver
C. Zinc
D. Gold

106. The process of purifying water by spraying water on to a bed of stones where
microorganism live so that the microorganisms feed on the pathogens in water and make the
water free from harmful pathogens is called?
A. Stone bed method
B. biofilter method
C. aerobic filtration
D. anerobic filtration

107. As per Avogadro‘s hypothesis , equal volumes of different gases at the same temperature
and pressure contain equal number of ______?
A. Atoms
B. Molecules
C. Particles
D. Electrons

108. Duralumin which is used in making aero planes is an alloy consisting of _____?
A. Aluminum & Copper
B. Aluminum, Copper & Manganese
C. Aluminum, Copper, Manganese & Magnesium
D. Aluminum and zinc

109. Which among the following was the first artificially produced element?
A. Neptunium
B. Ununbium
C. Technetium
D. none of the above

110. Froth & Foams are examples of which of the following ?
A. solid suspended in gas
B. liquid suspended in gas
C. gas suspended in liquid
D. gas suspended in solid

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