🔬 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

A laboratory reported a patient's fasting glucose level as 155 mg/dL (milligrams per deciliter). What is this value equal to in SI units?Answer: 8.61 M Identify the false statement: Energy of IR is higher than the visible light, Energy of UV is higher than the visible light, Energy of IR is lower than the visible light, Energy of UV is higher than IR radiationAnswer: Energy of IR is higher than the visible light Salt of bromide when treated with HCl, KMnO₄, and CCl₄ gives brown layer of Br₂. In this reaction Br oxidized into Br₂ by?Answer: KMnO₄ Ethers show the phenomenon of ______?Answer: Metamerism Which of the following is not an electrophile?Answer: C₂H₅OCH₃ Which of the following instruments may be used to measure the optical activity of a compound?Answer: Polarimeter A mass spectrometer measures which of the following characteristics of the molecule?Answer: Mass to charge ratio The calculated magnetic moment of 5.92 BM corresponds to unpaired electrons of _____?Answer: 5 Graphite is used in nuclear reactors ______?Answer: For reducing the velocity of neutrons Max of a chemical compound rely upon ______?Answer: Chemical bonding Which one of the following is not a condensation polymer?Answer: Neoprene Which of the following is not nucleophile?Answer: AlCl₃ Which of following is used to calibrate the absorbance scale in UV-Visible instrument?Answer: K₂Cr₂O₇ The significant figure of the measurement shows the ______?Answer: Precision of the measurement Which of the following alkyl halides may undergo SN² reaction except?Answer: Tertiary Which of the following does not respond to the chromyl chloride test?Answer: HgCl₂ Bauxite is purified by using _______?Answer: Baeyer’s method Zeolite is _______?Answer: Hydrated sodium aluminum silicate The unit of the rate constant depends upon the ______?Answer: Order of the reaction Which of the following carboxylic acids is most acidic?Answer: Trichloroacetic acid Ammonia Solvay process is used for the manufacture of _____?Answer: Washing soda Which of the following transitions are NOT allowed in the normal electronic emission spectrum of an atom?Answer: 2s → 1s Which phenomenon explains why the sky appears blue to the human eye during the day?Answer: Rayleigh scattering of shorter wavelengths of light by atmospheric particles What is the primary reason why water has a high specific heat capacity compared to other liquids?Answer: Hydrogen bonding between water molecules requires more energy to change temperature Foam is an example of _____?Answer: A gas dispersed in a liquid Peptization involves _______?Answer: Disintegration of colloidal particles Which of the following enzymes catalyzes the hydrolysis of starch into sugars?Answer: Amylase What term describes animals that are active primarily at night?Answer: Nocturnal Which of the following molecule is inactive in the infrared spectrum?Answer: N₂ Which planet in our solar system rotates on its side, giving it a unique axial tilt of about 98 degrees?Answer: Uranus