Page 375 - General Knowledge

GENERAL KNOWLEDGE 2019

83. F block elements in the periodic table which are commonly called Lanthanides have the
following atomic numbers:
A. 57-70
B. 58-71
C. 59-72
D. 58-70

84. The volume of a gas at a given pressure and temperature is proportional to the number of
atoms or molecules regardless of the nature of the gas. This concept is called as___?
A. Avogadro‘s law
B. Dalton‘s law
C. Henry‘s law
D. Ideal gas law

85. Who among the following is known to manufacture first Cyclotron?
A. Ernest Lawrence
B. Niels Bohr
C. Rutherford
D. Max Born

86. British Scientist JJ Thomson was awarded Nobel prize in Physics in 1906 for discovery of
which of the following particle?
A. Electron
B. Proton
C. Neutron
D. Radio activity

87. Charles Goodyear is known for which of the following?
A. Experiments on Rubber Plants
B. Vulcanization of Rubber
C. Invention of Radial Tyres
D. Invention of Artificial Rubber

88. Which among the following gas is used in Balloons?
A. Hydrogen
B. Helium
C. Nitrogen
D. Oxygen

89. Which among the following is the most important characteristic of Noble metals?
A. Luster
B. Non reactive nature
C. Preciousness
D. Rare availability

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