Chemistry The nucleus of a hydrogen atom consists of 1 neutron only 1 proton + 2 neutron 1 proton only 1 electron only 1 neutron only 1 proton + 2 neutron 1 proton only 1 electron only ANSWER DOWNLOAD EXAMIANS APP
Chemistry A potato tuber has been cut into two halves. A few drops of iodine solution are placed on the cut surface of one of the halves. What colour change will be noticed? From brown to blue-black From pink to blue-green From blue to pink From brown to orange-red From brown to blue-black From pink to blue-green From blue to pink From brown to orange-red ANSWER DOWNLOAD EXAMIANS APP
Chemistry Aqua regia is a 1 : 3 mixture, by volume, of Conc. sulphuric acid and conc. nitric acid Conc. nitric acid and conc. hydrochloric acid Conc. nitric acid and conc. sulphuric acid Conc. hydrochloric acid and conc. nitric acid Conc. sulphuric acid and conc. nitric acid Conc. nitric acid and conc. hydrochloric acid Conc. nitric acid and conc. sulphuric acid Conc. hydrochloric acid and conc. nitric acid ANSWER DOWNLOAD EXAMIANS APP
Chemistry An electric iron has a heating element made of : Nichrome Tungsten Copper Zinc Nichrome Tungsten Copper Zinc ANSWER DOWNLOAD EXAMIANS APP
Chemistry The heaviest naturally occurring element is: Uranium Mercury Thorium Polonium Uranium Mercury Thorium Polonium ANSWER DOWNLOAD EXAMIANS APP
Chemistry The number of water molecules present in a drop of water (volume 0.0018 ml) at room temperature is 6.023 x 1023 6.023 x 1019 4.84 x 1017 1.568 x 103 6.023 x 1023 6.023 x 1019 4.84 x 1017 1.568 x 103 ANSWER DOWNLOAD EXAMIANS APP
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