<prompt> All are components of black gun powder except:CharcoalLead peroxidePotassium nitrateSulphur  <response>: Ans: b Lead peroxide Ref: Reddy, 27th ed,p. 187Components of black gun powder - Potassium nitrite 75Sulphur 10Charcoal 15Smokeless gun powderNitrocelluloseNitroglycerineNitroguanidineSemismokeless powder80 Black gun powder 20 smokeless powder- Lead peroxide is present in printing mixture. 