An element reacts with oxygen to give a compound with a high melting point. This compound is also soluble in water. The element is likely to be
(a) calcium
(b) carbon
(c) silicon
(d) iron

An element reacts with oxygen to give a compound with high melting point. This compound is also soluble in water. The element is likely to be

An element reacts with oxygen to give a compound with a high melting point.This compound is also solutble in water.the element is likely to be:

An element combines with oxygen to give a compound with a high melting point. The compound is also soluble in water. The element is likely to be

An element A reacts with water to form a compound B which is used in white washing. The compound B on heating forms an oxide C which on treatment with watr gives back B. identify A, B and C and give the reacitons involved.