P-1 Gravitation — Science STD 10 — Question

The property of carbon atom to form strong covalent bond with itself and results in formation of big molecules, is called ______________ .

Complete the following sentences:
A long-sighted person cannot se ______ objects clearly. Long-sightedness can be corrected by using ______ lenses.

Fill in the following blanks with suitable words:
A metal having low melting point is ________ but a non-metal having very high melting point is _________.

Body cavity is absent in __________ .(Coelenterata / Porifera)

Mendeleev created the ………… group without disturbing the original periodic table.

The commercial unit of power is ………… .

The reaction in which heat is given out along with products is known as ______________ .

Elements with atomic numbers 90 to 103 in the Modern Periodic table are called ………… .

_________and_________  are two steps of anaerobic respiration.

Fill in the following blanks with suitable words:
A person is short-sighted if his eyeball is too ____ Spectacles with a _____ lens are needed. A person is long sighted if his eyeball is too _____ Spectacles with a ____ lens are needed. These focus light rays exactly on to the _____.