Comuter science CH26 Parts of Computer — Science STD 9 — Question

If the electronic configuration of an element is 1s2 2s2 2p6 3s2 3p1’then it will occupy ……………… block of the periodic table.

Seafood is a source of …………………

Bile helps in the digestion of ______.

Which one of the following is not an antibiotic derived from Bacteria?

A growing seedling is kept in the dark room. A burning candle is placed near it for a few days. The tip part of the seedling bends towards the burning candle. This is an example of ______.

The Indigenous Draught breed from Thanjavur district is ………………..

In India the frequency of alternating current is,

A homogeneous mixture of two or more substances is called

Group 16 elements are collectively called as _______ .

______ compounds have high melting and boiling points.