Chemistry In a Carbonyl group a carbon atom makes double bond with Hydrogen Oxygen Carbon None of these Hydrogen Oxygen Carbon None of these ANSWER DOWNLOAD EXAMIANS APP
Chemistry The mass number of a nucleus is a fraction the sum of the number of protons and neutrons present in the nucleus always less than its atomic number always more than the atomic weight a fraction the sum of the number of protons and neutrons present in the nucleus always less than its atomic number always more than the atomic weight ANSWER DOWNLOAD EXAMIANS APP
Chemistry The most abundant metal in the Earth’s crust is Copper Zinc Iron Aluminium Copper Zinc Iron Aluminium ANSWER DOWNLOAD EXAMIANS APP
Chemistry The number of waves in n x 10th Bohr's orbit are n3 n-2 n2 n n3 n-2 n2 n ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following pairs of materials serves as electrodes in chargeable batteries commonly used in devices such as torch lights, electric shavers, etc. ? Zinc and carbon Iron and cadmium Nickel and cadmium Lead peroxide and lead Zinc and carbon Iron and cadmium Nickel and cadmium Lead peroxide and lead ANSWER DOWNLOAD EXAMIANS APP
Chemistry When water itself combines chemically with some element or mineral it is called Oxidation Hydration Desilication Carbonation Oxidation Hydration Desilication Carbonation ANSWER DOWNLOAD EXAMIANS APP
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