Home ยป Which one of the given is true, if a substance has a pH value of 4? Acids Bases and Salts MCQs Which one of the given is true, if a substance has a pH value of 4? December 28, 2021 4 Views Q. Which one of the given is true, if a substance has a pH value of 4? The substance is a baseThe substance is an acidThe substance is a neutral substanceEither (1) or (2) Answer: The substance is an acid
During the preparation of hydrogen chloride gas on a humid day, the gas is usually passed through the guard tube containing calcium chloride. The role of calcium chloride taken in the guard tube is to
Sodium hydrogen carbonate when added to acetic acid evolves a gas. Which of the following statements are true about the gas evolved?