Q.1: S.I. unit of heat is ____________.
Q.1: A sudden flow of very large current due to direct contact of a live and a neutral wire is called ____________.
Q.1: Properties such as size, shape, colour, etc. of a substance are called its ____________ properties. a) physical b) chemical c) both Q.2: The iron acquires a film of ____________ substance, when it gets rusted. a) greyish b) greenish c) brownish Q.3: Magnesium + Oxygen —-> _______________. a) Magnesium Oxygen b) Magnesium Oxide c) MagnesiumContinue reading “Ch – 6 Physical & Chemical Changes”