P-1 Periodic Classification of Element — Science STD 10 — Question

During winter in cold countries ethanoic acid freezes at room temperature itself and looks like ice. Therefore, it is named ______________ .

_________present in semiinferous tubules divide by meiosis to produce sperms.

Fill in the following blanks with suitable words:
Grass →____________→Human

The main threat to human being is from ............. .

Fill in the following blanks:
A root of a plant grows downward. This is known as _________.

Predators like lion and tiger prevent the over population of ………… .

Fill in the blanks in the following statements:
In going across a period (right to left) in periodic table, the atomic size of the atom _________.

A transformer transforms the __________and current levels of the generated power.

Elements that possess both the properties of metals and non metals are called __________.

Fill in the following blanks with suitable words:
In pea plants, the gene for dwarfness is _________ whereas that for tallness is __________.