MCQs on Acids and Bases Bleaching powders chemical name is calcium hypo oxychloride calcium oxychloride calcium chloride calcium chloro oxide Answer: (b) The ratio of the water molecule in plaster of paris and gypsum is 3:1 1:3 1:4 4:3 Answer: (c) Baking powder is sodium carbonate + sodium tartaric sodium …
CHEMISTRY MCQs
MCQs on First Law of Thermodynamics and Hess Law The variations in enthalpy that can not be detected per calorimeter can be detected with the aid of Newton’s law Hess’s law Krebs law Ohm’s law Answer: (b) The energy required to sever a given covalent bond is named bond energy …
MCQs on Heat of Reaction The energy released in the form of nuclear radiation in addition to heat and light during nuclear reactions is known as chemical energy nuclear energy heat energy electrical energy Answer: (b) Fireworks release energy in the form of heat sound light all of the above …
MCQs on Conductor and Conductance The unit of conductance cannot be expressed in mho (ohm)-1 siemens ohm/m Answer: (d) The SI unit of specific resistance is ohm m ohm/m ohm/m2 (ohm)-1 Answer: (a) The reciprocal of resistivity of a conductor is conductance capacitance conductivity none of these Answer: (c) In …
MCQs on Alkyne Ethyne and Ethane can be separated from a mixture by passing it through (a) Pyrogallol (b) Charcoal powder (c) Concentrated H2SO4 (d) Ammonical Cu2Cl2 1-butyne and 2-butyne can be identified by using which of the following reagents? (a) O2 (b) Br2 (c) NaNH2 (d) HCl Which of …
MCQs on Valence Bond Theory In which year was the Valence bond theory introduced? (a) 1927 (b) 1920 (c) 1930 (d) 1935 The oxygen molecule is paramagnetic. It can be explained by (a) Resonance (b) Hybridisation (c) Valence bond theory (d) Molecular orbital theory Bond angle of 120° is found …