🔬 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

The minimum number of unequal forces whose sum can equal to zero is _____?Answer: 3 What is the chemical name of "chalk"?Answer: Calcium carbonate In a photoelectric cell, the velocity of ejection of an electron emitted depends upon _______?Answer: Frequency of the incident light Force acting on a charge moving in a magnetic field will not dependupon _____?Answer: Its mass What is the name of the process by which a eukaryotic cell engulf very large particles, or even entire foreign cells?Answer: Exocytosis A light spring of constant K is cut into two equal parts. The spring constant of each part is ______?Answer: 2K A mutation occurring in any cell that is not destined to become a germ cell is ______?Answer: Somatic mutation What does not change when sound enters from one medium to another?Answer: Frequency Escape velocity on Earth is 11.2 km/s. What would be the escape velocity on a planet whose mass is 1000 times and radius is 10 times that of Earth?Answer: 112 km/s A satellite is revolving around the Earth. If its height is 4 times the height of a geo-stationary satellite, what will become its time period?Answer: 8 days Kepler’s laws state that the square of the time period of any body about the sun is directly proportional to _______?Answer: R³ When a proton and anti-proton annihilate, the energy release is ______?Answer: 3x10⁻¹⁰ J The ratio of the weight of a man in a stationary lift and in a lift accelerating downward with uniform acceleration ‘a’ is 3:2. The acceleration of the lift is _____?Answer: g/3 A body is projected with the same velocity at angle 35°, 70°, 60°, 20° from the horizontal. The maximum ratio will be at _____?Answer: 35° One projectile moving with velocity V in space gets burst into 2 parts of masses in the ratio 1:3. The smaller part becomes stationary. What is the velocity of the other part?Answer: 4V/3 A man can throw a ball to a maximum height of h. He can throw the same ball to the maximum horizontal distance of _____?Answer: 2h Average distance covered by alpha particle (α-particle) in air before its ionizing power ceases is called its?Answer: Range Which one of the following is more coherent?Answer: Laser Which of the following does not apply in nanotechnology?Answer: Newtonian mechanics can describe it The structure of Na⁺Cl⁻ is _____?Answer: Face-centered cubic (FCC) Refractive index of materials is approximately equal to the square root of _____?Answer: Electrical permittivity × Magnetic permeability A positive change moving with a constant velocity v enters a region of a uniform magnetic field pointing out the page. What is the direction of the magnetic force on the charge?Answer: To the bottom of the page Force exerted on a person by atmosphere is _____?Answer: 200000 N For an electronic state s = 1, and 1 = 1, the number of possible values of total angular momentum of an electronic are _____?Answer: 3 Relativistic Mechanics produces results different from classical mechanics for bodily?Answer: Very high velocities Which of the following is the property of an ionic compound?Answer: High melting and boiling The Maxwellian speed distribution provides a direct explanation of _____?Answer: Evaporation The specific heat of lead is 0.030 cal/gC° 300g of lead shot at 100°C is mixed with 100 g of water at 70°C in an insulated container. The final temperature of the mixture is?Answer: 72.5°C The zeroth law of thermodynamics allows us to define _____?Answer: Temperature Canonical transformations can often be conveniently found or verified by using a ______?Answer: Generating function