P-1 Periodic Classification of Element — Science STD 10 — Question

At the time of disaster time the ............. leadership plays very important role.

During exercise, _________accumulates in the muscles due to which we feel tried.

Facilities like roads and water supply are restored in ............. phase.

Fill in the following blanks with suitable words:
Nuclear ____________ is used in nuclear power stations for the production of electricity.

Remaining tissue of the burst follicle forms_________.

Heat lost by hot object = ______________.

All chemical reactions obey law of conservation of mass, hence, chemical equations should be ______________ .

Fill in the following blanks with suitable words:
According to Newlands’ classification of elements, the properties of sulphur are similar to those of oxygen because sulphur is the _________ element starting from oxygen.

The ______________ % surface of earth is occupied by water.

Value of g at centre of Earth is __________.