🔬 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

Third period element that initially reacts rapidly with oxygen to form a protective oxide coating that prevents further reactions isAnswer: Al Wings of birds and that of flying lizards provide evidence of:Answer: Convergent evolution Canal system is a characteristic of?Answer: Porifera Efficiency of chemical reaction can be checked by calculatingAnswer: Percentage yield Which of the following elements cannot be detected directly in a given organic compound?Answer: Oxygen The embryological stages of _______ show similarity in anatomical features.Answer: All vertebrates λ is a ____________ constant:Answer: Decay The inductance of a coil depends on.Answer: Number of turns If a constant force of 10N is applied to move an object 5m in the direction of the force, what is the work done?Answer: 50 J Mantle is the feature of?Answer: Mussel In an adiabatic process, how does the temperature of a gas change as its volume decreases?Answer: The temperature increases What happens when two waves of the same frequency and amplitude meet in phase?Answer: They combine to form a wave double the amplitude, resulting in constructive interference _________ is used in the production of Humulin?Answer: Bacteria Oxidation of secondary alcohol givesAnswer: Ketone Which part of the brain is controlling your sense of balance?Answer: Cerebellum When the mass of a body moving along a circle becomes half and radius becomes double, and v is constant, the centripetal force becomes?Answer: One-fourth The enzymes enable the conversion of substrates into products byAnswer: Lowering the activation energy Which of the following statement is true about the magnetic field inside a solenoid?Answer: It is along the axis of the coil How does an angle between the force applied and the direction of motion influence the work done on an object?Answer: Work is maximum when the angle is 0o According to Coulomb’s law, what happens to the electrostatic force between the 2-point charges if the distance between them is doubledAnswer: The force becomes one-fourth A tuning fork having angular frequency equal 440Hz produces sound waves which travel with the speed of 340 m/s. What is the separation between a compression and the adjacent rarefaction of the sound waves?Answer: 0.39 m According to the principle of superimposition, when 2 or more waves overlap at a point in space, the amplitude of the resultant wave at that point isAnswer: The sum of the amplitudes of the individual waves Which of the following does NOT relate to smooth muscles?Answer: Line the wall of heart The speed of sound in a medium containing ideal gas is NOT dependent onAnswer: Both A and B Which of the following bacteria produces endospores?Answer: Gram positive Shark belongs to class__________Answer: Chondrichthyes Radio waves are?Answer: Electromagnatic waves Forward reaction is the one thatAnswer: Takes place from left to right as given in chemical equation What is the main function of red blood cells in the human body?Answer: Transportation of oxygen Which of the following blood pressure readings indicates hypotension (low blood pressure)Answer: 90/60 mmHg