A white solid 'A' on heating gives off a gas which turns lime water milky. The residue is yellow when hot but turns white on cooling. The solid A is:
Zinc carbonate gives out carbondioxide and ZnO on heating. Carbondioxide turns lime water milky. ZnO is yellow when hot and becomes white on cooling due to defect in its crystal structure
Which day is observed as "International Day of Non-Violence"?
Which one of the following was created by the 'Pitt's India Act'?
How many cricketers, who have represented India in test matches, are presently Lok Sabha members?
Which of the following is not a characteristic of the Indian economy
When and by whom were the Asokan inscription deciphered for the first time?