The Fundamental Unit of Life — Science STD 9 — Question

Name the physical quantity whose SI unit is ‘hertz’.

Group the following and tabulate them as energy yielding, protein yielding, oil yielding and fodder crop.
Wheat, rice, berseem, maize, gram, oat, pigeon gram, sudan grass, lentil, soyabean, groundnut, castor and mustard.

Give two examples of mixed cropping.

“The properties of the product are different from those of the constituents”. State whether this statement best describes an element, a compound or a mixture.

Sussex is an exotic breed of poultry.

What name has been given to the elements required by plants in:

1. Smaller amount.
2. Larger amount.

State whether the following statements are true or false:
Salt and water can be recovered from an aqueous salt solution by the process of evaporation.

What is the function of RBC?