The Fundamental Unit of Life — Science STD 9 — Question

The non-SI units and SI units of some physical quantities are given in Column I and Column II respectively. Match the units belonging to the same physical quantity.

	Column I		Column II
P.	Degree Celsius	I.	Kilogram
Q.	Centimetre	II.	Pascal
R.	Bar	III.	Metre
S.	Milligram	IV.	Kelvin

Rutherford's scattering experiment estimated the size of:

Animal husbandry is the scientific management of:
(i) Animal breeding.
(ii) Culture of animals.
(iii) Animal livestock.
(iv) Rearing of animals.

What happens when a solid melts:

Gravitational force between two objects is 10N. If masses of both objects are doubled without changing distance between them, then the gravitational force would become:

Mucosal living of which organ differ from others in concern with number of layer of cell (simple/ strtified)?

A thermometer is inserted into a beaker filled with ice at 0∘C. The beaker is heated slowly. The temperature does not rise for some time. This is because:

Of the following components of phloem is non-living:

Organelle without a cell membrane is:

Which of the following are physical changes?

1. Melting of iron metal.
2. Rusting of iron
3. Bending of an iron rod.
4. Drawing a wire of iron metal.