Matter in Our Surroundings — Science STD 9 — Question

The force of attraction between two unit point masses separated by a unit distance is called:

The liquid in which iron can float is:

Collenchyma mainly forms __________.

The weight of an object at the centre of the earth of radius R is:

Which of the following is an incorrect statement in reference with observation in Rutherford’s α-particle scattering experiment?

Which of the following physical quantities has no unit:

Which of the following point is not shown by the Rutherford alpha scattering experiment:

When a crystal of potassium permanganate is placed at the bottom of water in a beaker, the water in the whole beaker turns purple on its own, even without stirring. This is an example of:

1. Distribution.
2. Intrusion.
3. Diffusion.
4. Effusion.

The English name of an element is potassium, its Latin name will be:

1. Plumbum.
2. Cuprum.
3. Kalium.
4. Natrium.

Where are the organelles embedded in a cell?