Chemistry Which of the following gases is most toxic ? Sulphur dioxide Chlorine Carbon dioxide Carbon monoxide Sulphur dioxide Chlorine Carbon dioxide Carbon monoxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Ozone saves the biosphere by absorbing high energy radiations called ________ . Gamma rays X–rays Infra-red (IR) Ultraviolet rays (UV) Gamma rays X–rays Infra-red (IR) Ultraviolet rays (UV) ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following alloy is used in making magnet ? Alnico Stainless steel Magnalium Duralumin Alnico Stainless steel Magnalium Duralumin ANSWER DOWNLOAD EXAMIANS APP
Chemistry Atoms having the same number of protons but different number of neutrons are called : Higgs-boson Isotopes Anions Cations Higgs-boson Isotopes Anions Cations ANSWER DOWNLOAD EXAMIANS APP
Chemistry What particles move around the nucleus of an atom and are negatively charged? Electrons Neutrons Protons Positrons Electrons Neutrons Protons Positrons ANSWER DOWNLOAD EXAMIANS APP
Chemistry Chemical properties of isotopes Need not be same Must be same Must be different Need not be different Need not be same Must be same Must be different Need not be different ANSWER DOWNLOAD EXAMIANS APP
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