Motion — Science STD 9 — Question

Below the skin, the fat is in the form of ____________?

The chemical which can be used to separate a mixture of carbon powder and sulphur powder successfully is:

1. Carbon dioxide.
2. Hydrochloric acid.
3. Hydrogen sulphide.
4. Carbon disulphide.

Crude petroleum has many components that are useful. Which of the following methods is employed to separate the components?

Membrane which allows passage of only solvent through it is:

1. Differentially permeable.
2. Semipermeable.
3. Impermeable.
4. Both (a) and (b).

In an auditorium, when a speech is going on, a window is opened beside the audience, then the absorption of sound:

A ball rolling on the ground possesses:

Which of the following is not an element?

The first experiment in artificial insemination was performed by:

1. Aristotle
2. Berzelius
3. Spallanzani
4. Linnaeus

Oil seeds such as sesame and mustard are good sources of:

_________ is used as a colouring agent to colour the slide which is to be observed under the microscope.