Question:- The element common to all acids is A. hydrogen B. carbon C. sulphur D. oxygen
Answer:- Option A
Question:- Non stick cooking utensils are coated with A. Teflon B. PVC C. black paint D. polystyrene
Answer:- Option A
Question:- Non stick cooking utensils are coated with A. Teflon B. PVC C. black paint D. polystyrene
Answer:- Option A
Question:- Carbon, diamond and graphite are together called A. allotropes B. isomers C. isomorphs D. isotopes
Answer:- Option A
Question:- Permanent hardness of water may be removed by the addition of A. sodium carbonate B. alum C. potassium permanganate D. lime
Answer:- Option A
Question:- Soda water contains A. carbonic acid B. sulphuric acid C. carbon dioxide D. nitrous acid
Answer:- Option C
