P-1 Effects of electric current — Science STD 10 — Question

Through the point of view of evolution, __________ is considered as connecting link between non-chordates and chordates. (Balanoglossus / Saccoglossus)

__________ is a highly corrosive and fuming liquid.

Natural gas does not contain __________ so burning of natural gas results in less pollution.

Fill in the following blanks with suitable words:A solution made in water is known as an __________ solution and indicated by the symbol __________.

In the family of alkali metals, the number of valence electrons is ………… .

Radiation leakage occured after a blast in atomic energy plant at ............. in Russia.

The SI unit of weight is __________.

Aluminium is extracted from its ore __________.

Harmful bacteria like ………… in the intestine are destroyed due to probiotics.

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