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CHEMISTRY MCQs

MCQs on p-Block Elements

MCQs on p-Block Elements Find the amphoteric oxide (a) CaO2 (b) CO2 (c) SnO2 (d) SiO2 Answer: (c) Graphite has a structural similarity with (a) B2H6 (b) B4C (c) B (d) BN Answer: (d) Which is the correct order of…

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2 years ago

MCQs on Chemical Kinetics

MCQs on Chemical Kinetics The rate of a chemical reaction tells us about the reactants taking part in the reaction the products formed in the reaction how slow or fast the reaction is taking place none of the above Answer:…

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2 years ago

MCQs on Electrochemistry

MCQs on Electrochemistry The aqueous solution of which of the following compounds is the best conductor of electric current? Acetic acid, Hydrochloric acid Ammonia Fructose Answer: (b) An increase in the conductivity equivalent of a solid electrolyte with dilution is…

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2 years ago

MCQs on Solid State

MCQs on Solid State How many unit cells are divided equally in a face-centred cubic lattice? 2 4 6 8 Answer: (c) A crystalline solid: changes abruptly from solid to liquid when heated. has no definite melting point. undergoes deformation…

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2 years ago

MCQ on Alcohols, Phenols and Ethers

MCQ on Alcohols, Phenols and Ethers Benzenediazonium chloride on reaction with phenol in weakly basic medium gives diphenyl ether p-hydroxyazobenzene chlorobenzene Benzene Answer: (b) Phenol reacts with bromine in CS2 at low temperature to give m-bromophenol o-and p-bromophenol p-bromophenol 2,4,6-tribromophenol…

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2 years ago

MCQs on Coordination Compounds

MCQs on Coordination Compounds When 0.1 mol CoCl3(NH3)5 is combined with excess AgNO3, then 0.2 mol AgCl is obtained. The conductivity of the solution suits the 1:3 electrolyte 1:1 electrolyte 3:1 electrolyte 1:2 electrolyte Answer: (d) A chelating agent has…

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2 years ago

MCQs on General principles and Processes of Isolation of Elements

MCQs on General principles and Processes of Isolation of Elements In the equation, 4M + 8CN– + H2O + O2 → 4[M(CN)2]– + 4OH–, the metal M is copper iron gold Zinc Answer: (c) Heating ore with carbon in the…

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2 years ago

MCQs on Hydrogen Bonding

MCQs on Hydrogen Bonding Which one of the following is not an isotope of hydrogen? Deuterium Tritium Ortho hydrogen None of these Answer: (c) Out of the two allotropic forms of dihydrogen, the form with lesser molecular energy is ortho…

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2 years ago

MCQs on Polymers

MCQs on Polymers Nylon threads are made of polyester polymer polyamide polymer polyethylene polymer polyvinyl polymer Answer: (b) Which of the following is a branched polymer? low density polymer polyester high density polymer nylon Answer: (a) On the basis of…

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2 years ago

MCQs on Bond Energy

MCQs on Bond Energy Which bond is most polar? N-F C-O O-F C-F Answer: (d) On the basis of octet rule, which bond is not present in gaseous nitrogen pentoxide molecule? covalent bonds coordinate bond electrovalent bond both electrovalent and…

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2 years ago

MCQs on Oxidation Reduction

MCQs on Oxidation Reduction The total of the oxidation number in an element is charge volatility reduction oxidation Answer: (a) The reduction is a gain of electrons protons neutros oxygen Answer: (a) Which of the following is not a reducing…

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2 years ago

MCQs on Oxidation Number and Oxidation State

MCQs on Oxidation Number and Oxidation State Number of moles of K2Cr2O7 reduced by 1 mole of Sn2+ is 1/6 1/3 2/3 1 Answer: (b) The oxidation number of carbon in CH2Cl2 is 0 2 3 5 Answer: (a) Which…

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2 years ago

MCQs on Auto Oxidation and Disproportionation

MCQs on Auto Oxidation and Disproportionation Which one of the following will not reduce an acidified solution of potassium dichromate (VI)? (CH3)2C(OH)CH3 FeSO4 CH3CH2CH(OH)CH3 Zn Answer: (a) 25.4g of iodine and 14.2g of chlorine is made to react completely to…

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2 years ago

MCQs on Covalent Bonding

MCQs on Covalent Bonding The octet rule is not valid for the molecule CO2 H2O O2 CO Answer: (d) The nature of bonding in CCl4 and CaH2 is electrovalent in both CCl4 and CaH2 covalent in CCl4 and electrovalent in…

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2 years ago

MCQs on Dipole Moment

MCQs on Dipole Moment Molecules with odd electron bond are paramagnetic unstable forms dimers at low temperature all are correct Answer: (d) In a crystal, atoms are located at the positions of maximum potential energy minimum potential energy zero potential…

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2 years ago

MCQs on Overlapping and Bonds

MCQs on Overlapping and Bonds Which of the following at ordinary temperature and pressure exists as a linear polymer due to extensive hydrogen bonding? H2O HCl HF NH3 Answer: (c) The shape of SF3Cl3 molecule is triangle bi-pyramidal cubic octahedral…

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2 years ago