MCQs on Aldehydes, Ketones and Carboxylic AcidsMCQs 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 alcohol + methanol sodium benzoate + sodium formate Answer: (1)… Home Tuition In Guwahati2 years ago
MCQs on Haloalkanes and HaloarenesMCQs 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 undergoes nucleophilic substitution exclusively by SN1 mechanism? Benzyl Chloride Ethyl… Home Tuition In Guwahati2 years ago
MCQs on D and F Block ElementsMCQs 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 4, 3 and 2 3, 3 and 3 Answer: (c)… Home Tuition In Guwahati2 years ago
MCQs on Surface ChemistryMCQs 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 all of these Answer: (c) At 15oC out of H2,… Home Tuition In Guwahati2 years ago
MCQs on Chemistry in Everyday LifeMCQs 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 the organic solvents cationic surfactant and insoluble in most organic… Home Tuition In Guwahati2 years ago
MCQs on Organic compounds containing NitrogenMCQs 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) An aldehyde on reaction with primary amine forms ketone Schiff’s… Home Tuition In Guwahati2 years ago
MCQs on Free Energy and Work FunctionMCQs 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 the reaction is antilog (0.105) antilog (-0.105) antilog (0.241) antilog… Home Tuition In Guwahati2 years ago
MCQs on Oxidizing and Reducing AgentMCQs 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) 2 Which of the following statements is not correct? oxygen… Home Tuition In Guwahati2 years ago
MCQs on Redox Reaction and Method for Balancing Redox ReactionMCQs on Redox Reaction and Method for Balancing Redox Reaction Which of the following represents a redox reaction? NaOH + HCl → NaCl + H2O BaCl2 + H2SO4 → BaSO4 + 2HCl CuSO4 + 2H2O → Cu(OH)2 + H2SO3 Zn… Home Tuition In Guwahati2 years ago
MCQs on Electrovalent BondingMCQs 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 solution fused state solid state none of the above Answer:… Home Tuition In Guwahati2 years ago
MCQs on Coordinate or Dative BondingMCQs 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 and B must be ionic covalent dative Hydrogen Answer: (c)… Home Tuition In Guwahati2 years ago
MCQs on Polarisation and Fajans RuleMCQs 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 ethane (C2H6) which gives an intermediate in which carbon atom… Home Tuition In Guwahati2 years ago
MCQs on HybridisationMCQs 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 is observed in dsp2 hybridisation sp3d hybridisation dsp3 hybridisation sp3d2… Home Tuition In Guwahati2 years ago
MCQs on Soil PollutionMCQs 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 because methyl isocyanate reacted with ammonia reacted with water reacted… Home Tuition In Guwahati2 years ago
MCQs on CorrosionMCQs 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 to corrosion lateral erosion corrasion hydraulic action Answer: (b) Elements… Home Tuition In Guwahati2 years ago
MCQs on HydrogenMCQs 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 oxidising agent hydrogen sublime Answer: (a) By losing one or… Home Tuition In Guwahati2 years ago
