Was Insuline Discovered?
(A) Bentig
(B) Domake
(C) Ronald Ross
(D) Harvey
Which one of the following is an alloy?
(A) Zinc
(B) Steel
(C) lead
(D) aluminum
Which of the following elements forms strong alkaline oxides when ignited in oxygen?
(A) Phosphorus
(B) sodium
(C) Iron
(D) Sulfur
Richter Scale is used in measuring?
(A) Earthquake intensity
(B) Wind speed
(C) Depth of sea
(D) Body temperature
Which rays are the latest research for use in medicine and war?
(A) X rays
(B) Laser rays
(C) Gamma rays
(D) cathode rays
The main reason why the sky appears blue?
(A) Sunlight is blue
(B) Scattering of solar rays by particles of dust etc. present in the atmosphere
(C) light reflection
(D) light refraction
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