🔬 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

______ 0.25M NaOH and needed to neutralize 10mL of 0.50 HCL?Answer: 20mL Which of the following possesses sp³d² hybridization?Answer: [Co(NH₃)₆]Cl₃ Is Inert chemical spice?Answer: N₂ An element that forms basic oxides _____?Answer: Ca Is the unit for equilibrium constant for reaction 2H₂O → H₃O⁺ + OH⁻?Answer: No unit When salt of strong and weak acid is dissolved in water, the anion of salt undergoes hydrolysis and a basic solution results. What is the equilibrium constant for this reaction?Answer: Kw/Ka The zero kelvin means ______?Answer: -273°C ____ is an unsaturated hydrocarbon.Answer: CH₃CHCHCH₂CH₃ Arene predominantly undergoes _____?Answer: Substitution Identify the Lucas reagent among the following?Answer: Conc. HCl & Anhydrous ZnCl₂ Absorbance of solution at 100% T is?Answer: 0.0 Calculate volume for 10.0 moles of O2 gas at STP?Answer: 224L C₆H₁₂ is ______?Answer: Cycloalkane Laboratory ammonia is 14.3 M with a density of 0.898 g/mL. What is the mole fraction of ammonia in this solution?Answer: 0.2806 moles Which of the following cannot be a gas chromatography detector?Answer: DAD Compound has the formula XF₄. The element X cannot be ______?Answer: Sc In voltammetry, the _____ is fixed throughout analysis?Answer: Potential difference The colorless, odorless gas that produces whitish solid on compression ______?Answer: Carbon dioxide Hydrochloric acid reacts with ammonia to produce ______?Answer: White fumes Which of the chemical formula of glycerol?Answer: C₃H₈O₃ The daughter nucleus after α-decay of ₆C¹⁰ will be ____?Answer: ₄Be⁶ The reaction between two HF and SbF₅ leads to the formulation of ______?Answer: [SbF₆]⁻ + 1H₂F⁺ _____ is not an organic addition reaction.Answer: Dehydration The rate law for the following reactions: 2NO₂ → NO₃ + NO K1; Slow NO₃ + CO → NO₂ + CO₂ K2; FastAnswer: K1[NO2]^2 The pH of 0.1M pyruvic acid will be _____?Answer: 2.9 Symbol Tl stands for ______?Answer: Thallium The sweetest sugar is ______?Answer: Fructose Which of the following instrumental component is not required in atomic emission spectrometer?Answer: Monochromator Following properties will decrease with increase in temperature except?Answer: Vapor pressure What is the value of 89.0°C on the Kelvin scale?Answer: 362 K