First chapter solved MCQs with explanation 1: In zero order reaction, the rate is independent of Temperature of reaction Concentration of reactants Concentration of products None of these Explanation In zero order reaction reactions the rate of reaction do not depend upon the concentration of reactants. So the option b is the correct answer. 2: … Read more
Third Chapter Solved Exercise MCQs Of Fsc Second Year Chemistry 1: Out of all the elements of group V-A, the highest ionization energy is possessed by N P Sb Bi Explanation As we know that ionization energy decreases down the group. Therefore, the highest ionization energy is shown by nitrogen because it is the first … Read more
Third Chapter Solved Exercise MCQs Of Fsc Second Year Chemistry 1: Which metal is used in the thermite process because of its activity? Iron Copper Aluminum Zinc Explanation Aluminum is used in thermite process in powder form. Al powder becomes highly reactive for oxygen and removes the oxygen from the oxides of other metals. The … Read more
Fourth chapter liquids and solids solved Exercise MCQs with explanation 1: London dispersion forces are the only forces present among the? a) Molecules of water in liquid b) Atoms of helium in gaseous state at high temperature c) Molecules of solid iodine d) Molecules of hydrogen chloride gas Explanation London forces are more prominent among … Read more
Seventh chapter Thermochemistry solved Exercise MCQs with explanation 1: If an endothermic reaction is allowed to take place very rapidly in the air, the temperature of the surrounding air; Remains constant Increases Decreases Remains unchanged Explanation: In endothermic reaction, the heat is absorbed. This heat is taken by the system from surrounding, hence the temperature … Read more
Fifth chapter solved MCQs with explanation 1: The nature of positive rays depends on: The nature of electrode The nature of discharge tube The nature of residual gas All of the above Explanation When high speed cathode rays strike the molecules of a gas enclosed in a discharge tube, they knock out the electrons from … Read more
Second chapter solved MCQs with explanation (Experimental Techniques in chemistry) 1: A filtration process could be very time consuming if it were not aided by a gentle suction which is developed: a) If the paper covers the funnel up to its circumference. B) If the paper has got small-sized pores in it. c) If the … Read more
First chapter Solved Exercise MCQs of 2nd-year chemistry 1: Which one of the following does not belong to alkaline earth metals? a) Be b) Ra c) Ba d) Rn Explanation Rn does not belong to alkaline earth metals. It is a noble gas and is radioactive. First Chapter Solved Exercise MCQs Of Fsc Second Year Chemistry … Read more
First chapter Solved Exercise MCQs of 2nd-year chemistry 1: keeping in view the size of atoms which order is the correct one Mg > Sr Ba > Mg Lu > Ce Cl > I Explanation The correct answer is b Because the sizes of atoms increase down the group and decrease along a period from … Read more
First chapter solved MCQs with explanation 1: Isotopes differ in a) Properties that depends upon mass b) Arrangement of electrons in orbitals c) Chemical properties d) The extent to which they may be affected in the electromagnetic field Explanation a is the correct answer Because by definition the isotopes differ in the number of neutrons … Read more