MCQs on Freezing Point of the Solvent Which one of the following gases has the lowest value of Henry’s law constant? N2 He H2 CO2 Answer: (d) If 10ml of 0.1M aqueous solution of NaCl is divided into 1000 drops of equal volume. What will be the concentration of one …
MCQs on Cell Constant and Electrochemical Cells Oxygen has a +2 oxidation state in H2O H2O2 F2O SO2 Answer: (3) Which of the following is the strongest reducing agent? Li Na Mg Ca Answer: (1) When the salt bridge is removed from a cell, its voltage will increase will decrease …
MCQs on Compounds of Transitional Elements The 3d transition series contains elements having an atomic number from 21 to 30 21 to 31 22 to 30 21 to 29 Answer: (a) The first transition element is copper nickel scandium vanadium Answer: (c) Transition metals are generally coloured because they absorb …
MCQs on Water or Hydride of Oxygen Water is oxidised to oxygen by H2O2 KMnO4 ClO2 fluorine Answer: (d) The H-O-H bond angle in a water molecule is about 90o 105o 135o 180o Answer: (b) The action of water or dilute mineral acids on metals can give tritium dihydrogen trihydrogen …
MCQs on Reversible and Irreversible Reaction The net energy change in a reversible cyclic process is 3/2 RT zero always > 0 always < 0 Answer: (b) Which of the following is an extensive property? temperature pressure mass/volume ratio energy Answer: (d) Which of the following represents the largest amount …
MCQs on Law of Mass Action Which of the following is not correct? the rate law is an experimental fact, but the law of mass action is theoretical the rate law is always different from the expression of the law of mass action the rate law is more informative than …
MCQs on Kp And Kc Relationship And Characteristics Of K What will be the value of Kp if the Kc is 26 for a reaction, PCl5 ⇌ PCl3 + Cl2at 25o°? 0.57 0.46 0.83 0.61 Answer: (d) For which of the following reactions Kp is less than Kc? 2HI ⇌ H2 …
MCQs on Electrical Conductors, Arrhenius Theory and Ostwald’s Dilution Law If a conductor length is increased, 100% then keeping all other parameters fixed, what will be the increase in power dissipate? 100% 200% 300% 400% Answer:(b) What happens to the conductivity of semiconductors when there is an increase in temperature? …
MCQs on Hydrogen Ion Concentration pH Scale and Buffer Solution Range of pH scale is 7 to 10 0 to 10 0 to 14 7 to 14 Answer: (c) Level of pH found in antacid solution ≤ 6.5 ≥ 7.0 > 10 > 14 Answer: (b) Three unknown solutions are …
MCQs on 2nd and 3rd Law of Thermodynamics and Entropy Which of the following processes is used to do maximum work done on the ideal gas that is compressed to half of its initial volume? isothermal isochoric isobaric adiabatic Answer: (d) What is the ratio of Cp/Cv for gas if …
MCQs on Alkane Which of the following conformation of n-butane is the most stable? (a) eclipsed (b) gauche (c) staggered (d) skew boat Find the correct order for relative energies of the ethane conformations (a) staggered < skewed < eclipsed (b) skewed < staggered < eclipsed (c) skewed < eclipsed …
MCQs on Alkene Which of the following compounds react most readily with Br(g)? (a) C2H2 (b) C3H6 (c) C2H4 (d) C4H10 When propene reacts with HBr in the presence of peroxide, it gives rise to (a) allyl bromide (b) isopropyl bromide (c) n-propyl bromide (d) 3-bromopropane Find the alkene with …
MCQs on Half-Life How many milligrams of tritium will remain after 49.2 years if the starting amount is 32 mg? The half-life of tritium is 12.3 years. (a) 8 mg (b) 2 mg (c) 1 mg (d) 4 mg Find the half-life of 614C if ???? is 2.31 x 10-4. …
MCQs on Acid-Base Titration What is the molarity of the solution of barium hydroxide, if 35 ml of 0.1 M HCl is used in the titration of 25 ml of the barium hydroxide solution? (a) 0.35 (b) 0.07 (c) 0.28 (d) 0.14 Answer: (b) Which of the following titrations will …
MCQs on Acid Rain The main contributors of acid rain are (a) sulphur oxides and carbon oxides (b) nitrogen oxides and sulphur oxides (c) carbon dioxide and carbon monoxide (d) nitrogen oxides and carbon oxides Answer: (b) Who coined the term acid rain? (a) Christ Ralph (b) Elmer Joseph Clark …
MCQs on Distillation A mixture of o-nitrophenol and p-nitrophenol can be separated by (a) crystallisation (b) chromatography (c) sublimation (d) steam distillation Answer: (d) The commonly used method to separate naphthalene from benzoic acid is (a) sublimation (b) crystallisation (c) distillation (d) chromatography Answer: (a) This is not separated by …
MCQs on Sucrose The phenomenon of mutarotation is not exhibited by (a) (–) Fructose (b) (+) Lactose (c) (+) Maltose (d) (+) Sucrose Answer: (d) Invert sugar is produced on hydrolysis of (a) fructose (b) dextrose (c) sucrose (d) glucose Answer: (c) The sweetest sugar is (a) sucrose (b) fructose …
MCQs on Crystal Field Theory Which of the following complexes shows zero crystal field stabilization energy? (a) [Co(H2O)6]3+ (b) [Fe(H2O)6]3+ (c) [Co(H2O)6]2+ (d) [Mn(H2O)6]3+ Answer: (b) Which of the following is paramagnetic? (a) [CoBr]42- (b) Mo(Co)6 (c) [Pt(en)Cl2] (d) [Co(NH3)6]3+ Answer: (a) For a high spin d4 octahedral complex the …
MCQs on Fatty Acid Catabolism The free fatty acids are transported by blood associated with (a) β -lipoprotein (b) a fatty acid-binding protein (c) albumin (d) none of the above Answer: (c) Where are the enzymes for β-oxidation present? (a) Nucleus (b) Cytosol (c) Mitochondria (d) Golgi apparatus Answer: (c) …
MCQs on Colloidal Dispersion Fog is an example of which type of colloidal system? (a) Gas in liquid (b) Solid in gasLiquid in gas (c) Gas in gas (d) Liquid in gas Answer: (b) Which of the following properties of colloids does not depend on the charge on particles? (a) …
MCQs on Catalyst and Catalysis Which of the following is incorrect for a catalyst? (a) Bio-chemical reactions are mostly catalysed by enzymes (b) Catalyst does not start a reaction (c) Catalyst changes the equilibrium constant of a reaction (d) Co-enzymes increase the activity of an enzyme Answer: (c) How does …