🔬 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 gas is safe and an effective extinguisher for all confined fires?Answer: Carbon dioxide Which of the following would produce minimum environmental pollution?Answer: Hydrogen Which bacteria is responsible for the formation of curd?Answer: Lactobacillus Acidophillus Which one of the following waves are used by the common TV remote control?Answer: Infrared waves The forbidden energy gap of carbon in diamond structure is ______?Answer: 5.5eV The distribution of energy for temperature was given in?Answer: Boltzmann distribution A number which is assigned to each atom or ion in a compound which explains its degree of oxidation is called?Answer: Oxidation number Equal masses of methane and oxygen are mixed in empty container at 250-degree C. The fraction of sotal pressure exerted by oxygen will be?Answer: One/three Isotopes differs in?Answer: Chemical properties The compound which is added to leaded gasoline to save engine from lead oxide and lead sulphate deposits?Answer: Ethylene bromide The National Anthem of Pakistan for the first time was played on?Answer: August 13th 1954 What is the primary purpose of HARP technology?Answer: To study the Earth’s ionosphere Steel is more elastic than rubber because ______?Answer: Ratio of stress to strain is more Which colur of light has the shortest wavelength?Answer: Blue The chemical formula of ozone gas is ______?Answer: O3 The ozone layer protects the earth from rays sent by the sun?Answer: Ultraviolet rays Instrument used for measuring very high temperature is _____?Answer: Pyrometer Clear nights are cooler than cloudy nights because of ______?Answer: Radiation Why is the light of an ordinary lamp hotter than that of the tube light?Answer: It is due to incandescence Due to which of the following, a shaving blade when placed gently on water floats?Answer: Surface tension Serum elevation of the following enzyme is good indication of active muscle damage?Answer: CPK Which of the following salts is the main cause of permanent hardness of water?Answer: Magnesium sulphate The weather balloon is not fully inflated on the ground before launch because _____?Answer: The air inside the balloon expands as it rises and may burst All of the following are H2-receptor antagonist drugs except?Answer: Omeprazole Tungsten is used in the manufacturing of an electric bulbs because _____?Answer: It has very high melting point Magnesium sulphate is known to enhance the following action when injected?Answer: Muscle relaxation Television signals cannot be received ordinarily beyond a particular distance due to ______?Answer: Curvature of earth Ovulation without behavioral estrous signs is called _______?Answer: Silent ovulation The sun is visible a little before it rises on the horizon and a little after it sets below the horizon. This is the consequence of the phenomenon of _____?Answer: Atmospheric refraction Newton's third law of motion states that for every action, there is an equal and opposite reaction. Which of the following statements can be inferred from the above-mentioned law of motion? Statement 1: For every interaction, there is a pair of forces acting on the two interacting objects., Statement 2: The magnitude of the force on the first object equal the magnitude of the force on the second object., Statement 3: Forces always comes in pairs - equal and opposite action reaction force pairs., Statement 4: Action and its reaction act on two same bodies., Statement 5: Action and its reaction act on two different bodies.Answer: All statement except 4th can be inferred from 3rd Law of Motion