MCQs on Chemical Equilibrium
MCQs on Chemical Equilibrium Find the pH of a solution when 0.01 M HCl and 0.1 M NaOH are mixed in equal volumes (a) 12.65 (b) 1.04 (c) 7.0 (d)…
MCQs on States of Matter
MCQs on States of Matter A container with a pin-hole contains equal moles of H2(g) and O2(g). Find the fraction of oxygen gas escaped at the same time when one-fourth…
MCQs on Organic Chemistry
MCQs on Organic Chemistry Which is the best-suited method for the separation of para and ortho-nitrophenols from 1:1 mixture? (a) crystallisation (b) chromatography (c) sublimation (d) steam distillation Answer: (d)…
MCQs on Environmental Chemistry
MCQs on Environmental Chemistry Photochemical smog normally does not contain (a) Chlorofluorocarbons (b) Peroxyacetyl nitrate (c) Ozone (d) Acrolein Answer: (a) Depletion of the ozone layer is caused due to…
MCQs on Solutions Chemistry
MCQs on Solutions Chemistry The mole fraction of the solute in one molal aqueous solution is 0.009 0.018 0.027 0.036 Answer: (b) 5 cm3 of acetone is added to 100…
MCQs on Aldehydes, Ketones and Carboxylic Acids
MCQs on Aldehydes, Ketones and Carboxylic Acids A mixture of benzaldehyde and formaldehyde on heating with aqueous NaOH solution gives benzyl alcohol + sodium formate sodium benzoate + methanol benzyl…
MCQs on Haloalkanes and Haloarenes
MCQs on Haloalkanes and Haloarenes The reaction of tert butyl bromide with sodium methoxide produces mainly isobutane isobutylene tert-butyl methyl ether sodium tert butoxide Answer: (b) Which of the following…
MCQs on D and F Block Elements
MCQs on D and F Block Elements The number of unpaired electrons in gaseous species of Mn3+, Cr3+ and V3+ respectively are: 4, 4 and 2 3, 3 and 2…
MCQs on Surface Chemistry
MCQs on Surface Chemistry Which one of the following is an example of adsorption? ammonia in contact with water anhydrous CaCl2 with water silica gel in contact with water vapours…
MCQs on Chemistry in Everyday Life
MCQs on Chemistry in Everyday Life Chloramine-T is an disinfectant antiseptic analgesic antipyretic Answer: (a) Benzalkonium chloride is a cationic surfactant and antiseptic anionic surfactant and soluble in most of…
MCQs on Organic compounds containing Nitrogen
MCQs on Organic compounds containing Nitrogen Acetamide can be converted to methenamine by which of the following reactions? Stephen’s reaction Hoffmann bromamide reaction Carbylamine reaction Gabriel phthalimide synthesis Answer: (b)…
MCQs on Free Energy and Work Function
MCQs on Free Energy and Work Function If the standard free energy change for a reaction is 1.546 kJ/mol at 500oC then the value of the standard equilibrium constant for…
MCQs on Oxidizing and Reducing Agent
MCQs on Oxidizing and Reducing Agent Oxygen can be converted into ozone by oxidation at high temperature catalytic oxidation oxidation under high pressure and temperature silent electric discharge Answer: (d)…
MCQs on Redox Reaction and Method for Balancing Redox Reaction
MCQs on Redox Reaction and Method for Balancing Redox Reaction Which of the following represents a redox reaction? NaOH + HCl → NaCl + H2O BaCl2 + H2SO4 → BaSO4…
MCQs on Electrovalent Bonding
MCQs on Electrovalent Bonding Electrovalent compounds are low melting insoluble in polar solvents conductors in the fused state none of the above Answer: (c) Ionic compounds don’t conduct electricity in…
MCQs on Coordinate or Dative Bonding
MCQs on Coordinate or Dative Bonding When two species A and B form an electron-pair bond and A does not provide its electrons for bonding, the bond present between A…
MCQs on Polarisation and Fajans Rule
MCQs on Polarisation and Fajans Rule The molecule, which contains sp3d2 and p orbitals overlapping in it is PCl5 BrF5 ClF3 IF7 Answer: (b) Homolytic fission of C-C bond of…
MCQs on Hybridisation
MCQs on Hybridisation The compound which contains both ionic and covalent bond: KCl KCN CH4 H2 Answer: (b) The maximum number of 90o angles between bond pair-bond pair of electrons…
MCQs on Soil Pollution
MCQs on Soil Pollution Which of the following serves as an indicator of atmospheric pollution? fern liverworts hornworts epiphytic lichens Answer: (d) In 1984, the Bhopal gas tragedy took place…
MCQs on Corrosion
MCQs on Corrosion Which of the following methods is not used for the prevention of corrosion? greasing painting plating Heating Answer: (d) Widening of a river valley takes place due…
MCQs on Hydrogen
MCQs on Hydrogen Electrolysis of brine produces chlorine gas hydrogen gas sodium hydroxide all the above Answer: (d) A reactant containing the element that is oxidised is called reducing agent…