Tissues — Science STD 9 — Question

When light is passed through water containing a few drops of milk, it shows a bluish tinge. This is due to the scattering of light by milk. This indicates that milk is :

Which of the following configuration will form a cation:

Acceleration due to gravity (due to the shell) at any point inside the shell is:

In which of the following conditions, the distance between the molecules of hydrogen gas would increase?

1. Increasing pressure on hydrogen contained in a closed container.
2. Some hydrogen gas leaking out of the container.
3. Increasing the volume of the container of hydrogen gas.
4. Adding more hydrogen gas to the container without increasing the volume of the container.

Who derived the Universal Law for Gravitation:

When the pitch of note produced by a harmonium is lowered, then the wavelength of the note:

1. Decreases.
2. First decreases and then increases.
3. Increases.
4. Remains the same.

Increase in momentum by 20% will increase the K.E. by:

The first model of an atom was given by:

What property of an element determines its chemical behaviour?