Question Detail What is Calcium sulphate ? epsom saltblue vitriolgypsum saltpotash alum Answer: Option C Ad Similar Questions : 1. The most electropositive elements among the following is : CsCaNaBr Answer: Option A 2. Which of the following gas is used in cigarette lighters ? ButanePropaneMethaneEthane Answer: Option A 3. Bleaching action of chlorine is by decompositionhydrolysisreductionoxidation Answer: Option A 4. The high reactivity of fluorine is due to ? small size of fluorine atomits high electro negativityavailability of d-orbitalsstrong F - F bond Answer: Option B 5. Biogas majorly contains ? EthaneMethaneHydrogenCO Answer: Option B Read more from - Chemistry Questions Answers