General Science Multiple Choice Questions
General Science Multiple Choice Questions 1) What is the PH of H2O? 6 7 8 9 Answer: (b) 7 Explanation: H2O is the chemical formula of water. The water is neither acid nor base. Water is only neutral. This category belongs to pH 7. Therefore, the pH of water is 7. 2) Which of the following gas is reduced in the reduction process? Oxygen Helium Carbon Hydrogen Answer: (d) Hydrogen Explanation: In the reduction process, oxygen is added, and hydrogen is reduced from the reactant. 3) Which of the following compound is mainly used in hand sanitizer? Aldehyde Acetic acid Alcohol Ketone Answer: (c) Alcohol Explanation: Alcohol is mainly used in hand sanitizers. It kills germs present on our hands or any other places by rendering their oxygen supply. 4) What is the S.I unit of frequency? Diopter Second Hertz Meter Answer: (c) Hertz Explanation: The frequency is equal to the number of cycles per unit time, so its S.I unit is s-1 which is equal to hertz. Therefore, the S.I ...