🔬 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

Which of the following vitamin functions as both, hormone and visual pigment?Answer: Retinal Which of the following food sources has the highest levels of vitamin C?Answer: Black currants One of the following is not a criterion for an element to be termed as "essential"?Answer: The element is not required for growth and development particular element cannot be replaced What does CREPUSCULAR mean?Answer: Twilight Speed of a body in particular direction can be called?Answer: Velocity One of three p-orbitals on nitrogen atom overlaps with pi bonding system in benzene ring in the molecule of?Answer: Phenyl amine Component which obeys Ohm's law is called?Answer: Ohmic component Sodium carbonate is produced by?Answer: Ammonia Solvay process Long-sight defect could be corrected by using __________ lens?Answer: Convex If distance is increasing uniformly with time, then velocity is?Answer: Constant People living in high altitudes (like mountains) usually have a _________?Answer: larger number of Red Blood Cells The percentage by mass of any element is calculated with the help of?Answer: Formula of compound and relative atomic masses Electric field strength related to hall voltage is given by?Answer: VH/d A rectangle-shaped open-to-sky tank of water has a length of 2 m and a width of 1 m. If the atmospheric pressure is assumed 16 to be 100 kPa and thickness of the tank walls is assumed to be negligible, the force exerted by the atmosphere on the surface of water is?Answer: 200 KN The increase in the rate of reaction due to the increase in temperature is due to?Answer: Increased energy and successful collisions In semiconductors upon increasing temperature, conductivity will______?Answer: Increases In case of filament lamp at higher voltages, the resistance of lamp?Answer: Increases As the number of proton increases, the ionization energy?Answer: Increases Chlorofluorocarbons (CFCs) are not?Answer: Flammable and toxic Trim Ethylamine is an example of?Answer: Tertiary amines Covalent network crystals have?Answer: Higher melting point than molecular crystals The electron was first identified by?Answer: J. J. Thompson When gas is ionized,_______is formed.Answer: Plasma According to Newton's 2nd law, the object's acceleration and centripetal force are?Answer: In same direction A straight wire of length 0.20 m moves at a steady speed of 3.0 ms^-1 at night angles to the magnetic field of flux density 0.10 T. The EMF induced across ends of wire is?Answer: 0.06 V At the end of communication system, the signal is converted from radio to?Answer: Sound The proportion of successful collision increase with the increase in?Answer: Temperature The "pH" is measurement of acidity or basicity of an aqueous solution. The pH means?Answer: Power of hydrogen In order to find the internal structure of nucleus, electrons should be accelerated by voltages up to?Answer: 10^7 V High speed electrons have wavelength of order of?Answer: 10^-15 m