Chemistry Atoms having the same number of protons but different number of neutrons are called : Isotopes Higgs-boson Anions Cations Isotopes Higgs-boson Anions Cations ANSWER DOWNLOAD EXAMIANS APP
Chemistry The atomic number of carbon is 6 and its atomic mass is 12. How many are there protons in the nucleus of carbon ? 12 6 18 Zero 12 6 18 Zero ANSWER DOWNLOAD EXAMIANS APP
Chemistry KMnO4 can be used as a/an Disinfectant Insecticide Fertiliser Pesticide Disinfectant Insecticide Fertiliser Pesticide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following metals is not a pollutant ? Mercury Lead Arsenic Aluminium Mercury Lead Arsenic Aluminium ANSWER DOWNLOAD EXAMIANS APP
Chemistry The half life period of an isotope is 2 hours. After 6 hours what fraction of the initial quantity of the isotope will be left behind? 1/4 1/8 1/3 1/6 1/4 1/8 1/3 1/6 ANSWER DOWNLOAD EXAMIANS APP
Chemistry The acid rain destroys vegetations because it contains Sulphuric acid Carbon monoxide Nitric acid Ozone Sulphuric acid Carbon monoxide Nitric acid Ozone ANSWER DOWNLOAD EXAMIANS APP
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