P-1 Refraction of light — Science STD 10 — Question

……….. is an acidic oxide.

The usual disease caused by the excessive drinking of alcohol over a long period of time is:

Zinc oxide is a metal oxide. Which of the following term best describes the nature of zinc oxide:

Number of valence electrons in a carbon atom is _______.

The molecular masses of a carbon compound spread over a range of _______.

How many biodiversity spots are reported all over the World?

ATP is called ………. of the cell.

Some dinosaurs had feathers although they could not fly but birds have feathers that help them to fly. In the context of evolution, this means that:

______________reproduces by longitudinal binary fission.

The fossil fuel whose known reserves in the earth are expected to last for the minimum period is: