Download PDF Class 10 Chemistry Notes – Chapter 17 Chapter 17: Reaction Kinetics Board: Punjab Board A. Multiple-Choice Questions (MCQs) 1. The number of collisions per unit volume of the reaction mixture per unit time is called: (a) Collision energy(b) Activation energy(c) Collision frequency(d) Collision force Correct Answer: (c) Collision frequency 2. If the…
Download PDF Class 10 Chemistry Notes – Chapter 16 Chapter 16: Electrochemistry Board: Punjab Board A. Multiple-Choice Questions (MCQs) 1. What is the oxidation number of Mn in K₂MnO₄? (a) +7(b) +5(c) +6(d) −6 Correct Answer: (c) +6 2. Which element is being reduced in the following reaction? [ 4HBr_{(aq)}+MnO_{2(s)} rightarrow MnBr_{2(aq)}+Br_{2(g)}+2H_2O_{(l)} ] (a)…
Download PDF Class 10 Chemistry Notes – Chapter 15 Chapter 15: Stoichiometry Board: Punjab Board A. Multiple-Choice Questions (MCQs) 1. What is the volume occupied by 15 moles of ammonia gas at RTP? (a) 224 dm³(b) 160 dm³(c) 360 dm³(d) 265 dm³ Correct Answer: (c) 360 dm³ 2. How many moles of natural gas…
Download PDF Chapter 21: Space and Environmental Physics Class: 10thSubject: PhysicsBoard: PunjabChapter: 21 Exercise Solutions A. Multiple Choice Questions (MCQs) 21.1 What process generates energy in the Sun? (a) Nuclear fission(b) Nuclear fusion(c) Radioactive decay(d) Chemical reactions Correct Answer: (b) Nuclear fusion. 21.2 The factor that primarily determines a planet’s surface temperature is: (a) Its…
Download PDF Chapter 20: Atomic and Nuclear Physics Class: 10thSubject: PhysicsBoard: PunjabChapter: 20 Exercise Solutions A. Multiple Choice Questions (MCQs) 20.1 What did Rutherford’s alpha-particle scattering experiment reveal about the structure of the atom? (a) Electrons are distributed evenly throughout the atom(b) Protons and electrons are located in the nucleus(c) Atoms are indivisible and…
Download PDF Chapter 19: Electronics / Basic Electronics Class: 10thSubject: PhysicsBoard: Punjab Exercise Solutions A. Multiple Choice Questions (MCQs) 19.1 A diode allows current to flow in: (a) Both directions(b) Neither direction(c) One direction only ✓(d) Random directions 19.2 What is the primary function of a light-emitting diode (LED)? (a) To block current in both…
Download PDF Chapter 18: Electromagnetic Induction and Electromagnetic Waves Class: 10thSubject: PhysicsBoard: Punjab Exercise Solutions A. Multiple Choice Questions (MCQs) 18.1 What happens to the induced e.m.f. in a coil if the rate of change of the magnetic field increases? (a) Decreases(b) Remains the same(c) Increases ✓(d) Becomes zero 18.2 In an A.C. generator, slip…
Download PDF Class 10 Physics — Chapter 16: Electricity and Magnetism / Current Electricity Quran Education Point Subject: PhysicsClass: 10thBoard: Punjab A. Multiple Choice Questions (MCQs) 16.1 The direction of conventional current is: (a) From negative to positive terminal(b) From positive to negative terminal(c) In both directions at the same time(d) It does not…
Download PDF Class 10 Physics — Chapter 15: Electrostatics Quran Education PointSubject: PhysicsClass: 10thBoard: Punjab A. Multiple Choice Questions (MCQs) 15.1 Electrical breakdown is: (a) The process of ionizing a gas due to a strong electric field(b) The process of neutralizing a charged object(c) The process of charging an insulator(d) The process of discharging…
Download PDF Class 10 Physics – Chapter 14: Light Board: Punjab BoardSubject: PhysicsClass: 10th A. Multiple Choice Questions (MCQs) 14.1 What type of image is always formed by a convex mirror? (a) Real and inverted(b) Virtual and diminished(c) Real and magnified(d) Virtual and magnified Correct Answer: (b) Virtual and diminished 14.2 The optical device…
