Post category:Chemistry Mcqs Post comments:0 Comments Most of the ozone in the atmosphere is concentrated in the A. Mesosphere B. Troposphere C. Stratosphere D. Ionosphere Read more articles Previous PostWhat are Columns in Periodic table called? Next PostWhich of the following energy Foods contain? You Might Also Like Which of the following has the greatest elasticity? July 12, 2020 In physics, Sir Max Planck got noble prize in 1918 for his work on? June 17, 2020 Alkali metals are: August 26, 2020 Salt is _______ in nature. December 11, 2020 Intrinsic Semi-conductor is also called? June 21, 2020 Which one of the following is not an alkali metal: August 26, 2020 Leave a Reply Cancel replyCommentEnter your name or username to comment Enter your email address to comment Enter your website URL (optional) Save my name, email, and website in this browser for the next time I comment. Δ