The metallurgical process in which a metal is obtained in a fused state is called
(A) calcinations
(B) froth floatation
(C) smelting
(D) roasting
The velocity of light was first measured by
(A) Galileo
(B) Newton
(C) Einstein
(D) Romer
Who among the following evolved the concept of the relationship between mass and energy?
(A) Dalton
(B) Rutherford
(C) Einstein
(D) Planck
Which instrument is used to record the speed of a vehicle?
(A) Thermometer
(B) Barometer
(C) Speedometer
(D) Oscilloscope
As compared to pure water, a body in salty water will :
(A) Sink more
(B) Sink less
(C) Remain same
(D) None of these
Who had given the theory of Plate tectonics?
(A) William Harvey
(B) Alfred Wegener
(C) Ernest Rutherford
(D) Edmond Becquerel
What is the smallest unit of power?
(A) Horsepower
(B) Megawatt
(C) Watt
(D) Kilowatt
The Black soil is also known as ______ soil.
(A) Bhangar
(B) Humus
(C) Crystalline
(D) Regur
Which of the following halogen is the least reactive element?
(A) Iodine
(B) Astatine
(C) fluorine
(D) Bromine
The number of isotopes in the hydrogen is:
(A) Four
(B) Five
(C) Two
(D) Three
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