🔬 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

Zymogen cells are found in?Answer: Stomach Erythrocytes under normal conditions and microorganisms under anaerobic condition may accumulate?Answer: Lactate Which of these is bioluminescent?Answer: All of these Before the late 18th century, most textiles___at home.Answer: Were produced From where corona virus got its name?Answer: Due to their crown-like projections Which one of the following forms weak electrolyte solution with water?Answer: CH₃COOH Hypochlorous acid (HClO) is unstable and readily liberates ______?Answer: Atomic Oxygen When Qc < Kc, which one of the following statements is true?Answer: The reaction will proceed in the forward direction The color of KMnO₄ entirely disappears by the action of reducing agent is _____?Answer: Acidic medium A type of blood disease which is caused by radiation such as X-rays and gamma rays is?Answer: Leukemia In dry cell the electrolyte is a moist paste of ______?Answer: NH₄Cl and ZnCl₂ Acid ferric chloride FeCl₃ solution reduces to ferrous chloride FeCl₂ solution by ______?Answer: Nascent Hydrogen Which compound is very slightly soluble in water?Answer: AgCl The Lowry and Bronsted theory describes that Urea is amphiprotic solvent. If it reacts with ammonia then it acts as?Answer: Acid to form The rate at which hydrogen is used in the reaction. N2(g) + 3H2(g) → 2NH3(g) is 1.72 mol H2.L^-1.h^-1. What is the rate (in mol N2.L^-1.h^-1) at which nitrogen is used?Answer: 0.57 ______are carboxylic acid with long hydrocarbon chain.Answer: Fatty acids The catalyst in Friedel-Crafts alkylation is?Answer: AlCl₃ Which set of hybrid orbitals of carbon is used by each oxygen in forming H₂CO₃?Answer: sp₂ Pure water could be obtained from seawater by?Answer: Distillation Which of the following is not a transition metal complex?Answer: K2Cr2O7 The number of electrons involved in oxidation of glucose to gluconic acid are?Answer: 2 Which combination will produce a precipitate?Answer: AgNO₃ (aq) and Ca(C₂H₃O₂)₂ (aq) Based on the equations below, which metal is the most active? Pb(NO3)2 (aq) + Ni (s) → Ni(NO2)2 (aq) + Pb (s), Pb(NO3)2 (aq) + Ag (s) → No reaction, Cu(NO3)2 (aq) + Ag (s) → No reaction?Answer: Ni Which of the following statements is not true about precision of data?Answer: It is the difference between the obtained value and the true value Compound Z absorbs light of wavelength 320 nm. A 1.0 x 10^-3 mol dm^-3 solution of a compound Z gives an absorbance reading of 0.15 when placed in a solution cell path 1 cm. What is the value of the molar extinction (absorption) coefficient of Z?Answer: 150 mol^-1 dm^3 cm^-1 Polymers which soften on heating and harden when cooled are?Answer: Thermoplastics For second order reaction, the initial concentration of reactant A is 0.24 M. If the rate constant is 8.1 x 10^-2 M^-1 s^-1, what is the concentration of A after 29 seconds?Answer: 0.15 M In crystal field theory (CFT), the energy gap between t2g and eg sets is denoted by?Answer: 10Dq What is indicated when a chemical cell’s voltage has dropped to zero?Answer: The cell reaction has reached equilibrium Natural rubber consists of polymers of the organic compound?Answer: Isoprene