P-2 Environmental management — Science STD 10 — Question

Ionic compounds are __________ in nature.

Saturated hydrocarbons have ______________ bonds only.

__________ is the first state to start a separate cyber crime unit.

Fill in the blanks in the following statements:
On going down in a group in the periodic table, the metallic character of elements _________.

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

………… and ………… bacteria are used to clear the oil spills.

Animals belonging to Porifera have special types of cells called __________ (collar cells / cnidoblasts)

Elements showing properties of both metals and non-metals are called ………… .

Copper reacts with moist carbon dioxide in air and slowly loses its shine to gain a green coat of __________.

Fill in the following blanks with suitable words:
The non-metal present in steel is _______.