Improvement in Food Resources — Science STD 9 — Question

Which of the following is true about distance and time.

What is needed to calculate work?

Which one of the following does not consist of transverse waves?

1. Light emitted by a CFL.
2. TV signals from a satellite.
3. Ripples on the surface of a pond.
4. Musical notes of an orchestra.

Causes of water pollution are:

1. Inorganic.
2. Organic.
3. Biological.
4. All of these.

‘A’ has 9 protons, 9 electrons and 10 neutrons. 'B' has 12 protons, 12 electrons and 12 neutrons. Formula between A and B is:

Exotic breed of poultry bird having high egg laying capacity is:

1. White leghorn.
2. Broilers.
3. White cornish.
4. New hemisphere.

Find out the wrong statement from the following:

1. White revolution is meant for increase in milk production.
2. Blue revolution is meant for increase in fish production.
3. Increasing food production without compromising with environment quality is.
4. None of the above.

The chemical symbol for sodium is:

Find out the correct sentence:

Which of the following are covered by a single membrane?