Motion — Science STD 9 — Question

A body moves in a uniform circular motion

What is the approximate range of audible sound frequencies for a human with good hearing?

Metamerism is characteristic feature of:

1. Chordata.
2. Annelida.
3. Mollusca.
4. Nematoda.

Which of the following is the correct electronic configuration of sodium?

One of the following does not show Tyndall effect. This one is:

1. Soap solution.
2. Ink.
3. Sugar solution.
4. Starch solution.

Rinderpest disease of poultry is caused by:

1. Insects
2. Bacteria
3. Virus
4. Protozoa

Cells were determined to be the basic structural units of plants and animals, in which of the following time period?

Poultry farming is undertaken to raise following:

1. Egg production.
2. Feather production.
3. Chicken meat.
4. Milk production.

1. (i) and (ii)
2. (i) and (iii)
3. (ii) and (iii)
4. (iii) and (iv)

In which direction does a car at rest move when pushed by a few persons:

An electric motor raises a load of 0.2kg, at a constant speed, through a vertical distance of 3.0m in 2s. If the acceleration power stations and thermal power stations, alternators produce electricity.