🔬 General Science Solved MCQs with Answers

Practice 4010 approved 🔬 General Science questions with verified answers from the 🌐 Current Affairs & GK subject for Pakistan exams.

4010 solved MCQs

In a nuclear fission reaction, why is energy released?Answer: Mass of products is less than mass of reactants What is the relationship between decay constant (γ) and mean life (τ)?Answer: T = 1/γ In alpha emission, by how much does the atomic number decrease?Answer: 2 In beta minus (β⁻) decay, what particle is emitted?Answer: Electron and antineutrino What is the correct definition of refractive index?Answer: Ratio of speed of light in vacuum to speed of light in the medium Two capacitors of 2 μF and 3 μF are connected in series. What is the equivalent capacitance?Answer: 1.2 μF Two resistors of 3 Ω and 6 Ω are connected in parallel. Find the equivalent resistance?Answer: 2 Ω The current through a conductor between two points is directly proportional to the voltage across the two points, is known as?Answer: Ohm’s law In an isobaric process, when heat is supplied to an ideal gas, what happens?Answer: Volume increases Photosynthesis maninly produceAnswer: Glucose Basic unit of nervous system is?Answer: Neuron Acceleration due to gravity is independent of?Answer: Mass of the falling body What is the hardest natural material on Earth?Answer: Diamond Acceleration due to gravity (g) does not depend on:Answer: Mass of the falling object Energy stored in a compressed spring is called?Answer: Potential Energy Which law is an implication of the Law of Conservation of Energy?Answer: Law of Conservation of Mechanical Energy What is the necessary condition for the Law of Conservation of Momentum?Answer: The net external force on the system must be zero. Pressure in gases is caused by:Answer: Continuous collisions of gas molecules with the walls of the container Oxygen is released from hemoglobin in the:Answer: Body tissues Momentum is applied when:Answer: An object is in motion. The law of conservation of energy is the basis of which law of thermodynamics?Answer: First Law of Thermodynamics Which substance is used in match sticks?Answer: Sulphur ___ is used to record intensity and source of earthquakes:Answer: Seismograph The main gases that produce acid rain are:Answer: Sulfur dioxide and Nitrogen oxides Among the following mediums, Velocity of sound is the maximum in:Answer: Steel Faraday’s Law is associated with:Answer: Electromagnetic induction Ruminants digest cellulose in their stomach because?Answer: They have microorganisms that digest cellulose Sexual reproduction restores diploid chromosome number at fertilization because meiosis produces?Answer: Haploid gametes Herpetology is the study of:Answer: Reptiles and Amphibians In SI units, Nm₋₂ is unit of:Answer: Pressure