🔬 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 cells contained in the lacunae of the bone are calledAnswer: Osteocytes For rigid body that rotates about a fixed axis, the angle swept out by a line passing through any point on the body and intersecting the axis of rotation perpendicularly is called?Answer: Angular displacement A reflex action, does not involve the:Answer: Brain In the production of SO₃ from SO₂ and Oxygen, the yield of SO₃ is increased byAnswer: Adding more SO₂ How many moles are there in 60g of sodium hydroxide (NaOH)?Answer: 1.5 What will happen with the addition of salt to water?Answer: Water potential will decrease Carnivorous plants have evolved mechanisms for trapping and digesting small animals. The product of this digestion is used to supplement the plant’s supply of:Answer: Nitrites An electron is moving perpendicular to the magnetic field, which of the following is correct statement about electromagnetic force acting on the electron?Answer: Force acting is maximum Lenz’s law is consistent with theAnswer: Law of conservation of energy For a positive charged particle (q) moving with a velocity (v) in a magnetic Filed of flux density B, the force (F) acting on the charge particle is given by the expression?Answer: F = qv × B The pKb of n-propyl amine isAnswer: 3.40 Electronegativity of Al is approximately equal to that ofAnswer: Be Which of the following is NOT true about viruses?Answer: Can replicate on their own What directly triggers the activation of natural killer cells?Answer: Interferons Antibiotics can be used against:Answer: Salmonella typhi Which of the following is an example of passive immunity?Answer: Antibodies from mother's milk The following function/activity is NOT controlled by the autonomic nervous system.Answer: Thoughts and emotions The vertical and horizontal component of the projectile motion areAnswer: Independent of each other A car is moving in a circular path at a constant speed. What provides the necessary centripetal force to keep the car moving in this path?Answer: The friction between the tyres and the road Which one of the following is a strong electrolyte in solution?Answer: Potassium iodide What is the mass of 1 mole of calcium carbonate (CaCO₃)?Answer: 100g How many moles of NaCl are produced from 16.5g of HCl, according to the neutralization reaction? HCl(aq) + NaOH(aq) → NaCl(aq) + H₂O(I)Answer: 0.452 Which of the following is NOT true about plasmids found in streptococci?Answer: The bacterial chromosome depends on plasmids for replication The pathway to the breakdown of glucose, carried out by micro-organisms, is called:Answer: Alcoholic fermentation Lipids, which do not contain fatty acid are:Answer: Steroids The corpus luteum is essentially formed fromAnswer: Graafian follicle Viruses Can NOT______.Answer: Excrete A car in motion hits and gets crashed into a tree trunk, what is NOT conserved?Answer: Kinetic energy alone The homolytic fission of C-H bond in an alkane result inAnswer: Alkyl free radical Carbon monoxide is _____?Answer: Poisonous to humans