The device that confirms the presence of electric charge:
(A) Dynamo
(B) Electroscope
(C) Ammeter
(D) Cryotron
The number of isotopes in the hydrogen is:
(A) Four
(B) Five
(C) Two
(D) Three
Which of the following is the lightest element?
(A) Helium
(B) Mercury
(C) Hydrogen
(D) Platinum
Which of the following halogen is the least reactive element?
(A) Iodine
(B) Astatine
(C) fluorine
(D) Bromine
The time period of a vibrating body is 0.04s, then the frequency of the wave is___.
(A) 25Hz
(B) 20Hz
(C) 250Hz
(D) 200Hz
The Black soil is also known as ______ soil.
(A) Bhangar
(B) Humus
(C) Crystalline
(D) Regur
Which of the following energy varies with the height of an object?
(A) Nuclear energy
(B) Kinetic energy
(C) Chemical energy
(D) Potential energy
What is the smallest unit of power?
(A) Horsepower
(B) Megawatt
(C) Watt
(D) Kilowatt
Which of the following is incorrect?
(A) Oncology - Study of Cancer
(B) Numismatics – Stamps
(C) Ornithology- Study of birds
(D) Osteology - Study of bones
Who had given the theory of Plate tectonics?
(A) William Harvey
(B) Alfred Wegener
(C) Ernest Rutherford
(D) Edmond Becquerel
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