PPSC Past Paper Deputy Accountant Finance Department-2019 Morning, Everyday Science MCQs, PPSC Solved Past Papers MCQsWhich of the following layer absorbs most of the sun’s ultraviolet radiation?A. Dust B. Gaseous C. Ozone D. Gravitational Who was the commander of infidels in the battle of Ditch(Khandaq)?If A is two years older than B and B is twice as old as C. if the sum of the ages of A, B and C is 27 then how old is B?