A. Concentrated tetraoxosulphate (VI) acid B. Anhydrous calcium chloride C. Calcium oxide D. Sodium hydroxide Correct Answer: Option A -…
A. Oxygen and Carbon (IV) oxide B. Water and Oxygen C. Water and Carbon (IV) oxide and Oxygen D. Water…
A. Oxygen B. Hydrogen C. Tetraoxosulphate(IV) acid D. Chlorine Correct Answer: Option B - Hydrogen
A. bad colour B. bacteria C. temporary hardness D. permanent hardness Correct Answer: Option B - bacteria Explanation Chlorine helps…
A. calcium hydrogentrioxocarbonate (IV) B. calcium trioxocarbonate (IV) C. calcium tetraoxosulphate (VI) D. calcium hydroxide Correct Answer: Option B -…
A. water B. mercury C. paraffin D. phenol Correct Answer: Option C - paraffin Explanation Na is kept under kerosene…
A. 2.536 B. 1.623 C. 4.736 D. 0.394 Correct Answer: Option A - 2.536 Explanation For an ideal gas PV…
A. Reforming B. Polymerization C. Distillation D. Cracking Correct Answer: Option D - Cracking Explanation Ethene is produced from cracking…
A. positive ion B. neutral atom of a metal C. neutral atom of a non-metal D. negative ion Correct Answer:…
A. further heating B. adding concentrated H2SO4 C. cooling the acid solution with cold water D. bubbling air through the…