🔬 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

Breathing rate of man is lowest while ______?Answer: Resting In a simple model, the unforced rising of hot air can be attributed to?Answer: The low specific heat of air Excretory organ in Ascaris are ______?Answer: Renette cell Repeatable entity of a crystal structure is known as?Answer: Unit cell The phenomenon of fertilization was first perceived by ______?Answer: Hertwig Mature sperm are stored in the ______?Answer: Epididymis The repulsive energy is always?Answer: Positive Which is not a larva of sponge?Answer: Planula Cockroaches are ______?Answer: Omnivorous Which of the following is not a property of solids?Answer: Solids have an indefinite volume, not easily compressed A body in a room cools from 90°C to 80°C in 5 minutes. The time taken to cool from 70°C to 60°C is?Answer: More than 5 minute If the temperature of the sun is doubled, the rate of energy received on the earth will be increased by a factor of?Answer: 16 Two spheres of same material have radii r1 and r2. They are heated to same temperature and kept in same enclosure at low temperature. Their rates of loss of heat are in the ratio?Answer: r^2 1 /r^2 2 What is required in a fusion reactor, in order to over come the electrostatic repulsive force between nuclides?Answer: Very high pressure Two charges are placed a certain distance apart in air. When a dielectric sheet is placed between them, the electrostatic force between them will?Answer: Decrease When N-type semiconductor is heated?Answer: Number of electron and holes increases equally An electric field exerts a torque on a dipole only if?Answer: The field is perpendicular to the dipole moment The net electric field is zero?Answer: Inside any conductor with a static charge Choose the correct statement for a nuclear reactor?Answer: Moderator slow down the neutron Which of the following series of H-spectrum lies in ultraviolet region?Answer: Lyman series The light of suitable frequency falling on metal surface ejects electrons, this phenomenon is called?Answer: Photoelectric effect Increase in the entropy means the increase in?Answer: Randomness Soap film exhibits brilliant colours in sun light due to?Answer: Interference of light During projectile motion, the horizontal component of velocity?Answer: Remains constant How many fission take place per second in a 300 MW reactor, assuming each fission releases 200 MeV of energy?Answer: 9.38 x 10^18 The clinic nurse who guides client's development in effective problem solving and decision making begins by:Answer: Health history, health risk assessment, and health beliefs review Which of the following is not a postulate of Kinetic molecular theory of gases?Answer: Collisions of gas molecules are elastic Find the maximum value of resolving power of a grating 3 cm wide having 5000 lines per cm, if the wavelength of light used is 5890 A?Answer: 45000Å Which of the following is prenatal test used to help identify genetic abnormalities through a maternal blood test?Answer: Triple marker screen "Kissing bugs" act as the transmitting agent of _______?Answer: Chagas disease