Which of the following is used as a moderator in nuclear reactor? Graphite Radium Ordinary water Thorium TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following shows the masses of the three elementary particles in decreasing order? Leptons, Baryons, Mesons Mesons, Baryons, Leptons Leptons, Mesons Baryons Baryons, Mesons, Leptons TRUE ANSWER : ? YOUR ANSWER : ?
The inert gas which is substituted for nitrogen in the air used by deep sea divers for breathing, is Argon Xenon Krypton Helium TRUE ANSWER : ? YOUR ANSWER : ?
Gypsum is added to cement clinker to Increase the tensile strength of cement Facilitate the formation of colloidal gel Bind the particles of calcium silicate Decrease the rate of setting of cement TRUE ANSWER : ? YOUR ANSWER : ?
Tetraethyl lead is used as Pain Killer Petrol Additive Mosquito Repellent Fire Extinguisher TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following metals forms an amalgam with other metals? Tin Lead Mercury Zinc TRUE ANSWER : ? YOUR ANSWER : ?
Carbon, diamond and graphite are together called Allotrope Isomorphs Isotopes Isomers TRUE ANSWER : ? YOUR ANSWER : ?