QUIZ FINALS G9

THIS INSTRUMENT IS USED FOR

• HARVESTING

• CUTTING

• IRRIGATION

• TILLING

Which of the following is not true for fertilisers?

(a) They increase the yield

(b) Their excessive use disturbs the balance of nutrients in soil

(c) They are generally used in small quantity

(d) They are environment friendly

• a

• b

• c

• d

Organic wastes can be decomposed to form ________, which can sustainably enhance the nutrient content of the soil.

• COMPOST

• COWDUNG

• FERTILIZER

• PESTICIDE

This microbiologist identified causative agents of tuberculosis, cholera, and anthrax.

• Emil Adolf von Behring

• Robert Koch

• Sir Ronald Ross

• Louis Pasteur

Rhizobium is an example of

• (a) Symbiosis

• (b) Parasites

• (c) Insectivorous

• (d) none of these

The study of organisms and how they interact with one another and their environment is best described as

• Biology
• Ecology
• Zoology
• Botany

Yeast is used to make...

• rolls
• cakes
• pizza crust
• all of the above

Which is the correct statement about nylon?

• It is a natural fibre
• It is obtained from cellulose
• It is a strong fibre
• it is a mixture of polyester and cotton

Electrical switches are made up of

• melamine
• bakelite
• PVC
• polythene

John was observing the physical properties of elements in order to classify them as either a metal, nonmetal, or metalloid. The first element was dull, brittle, and did not conduct heat. What would its classification be? 

• metal 
• nonmetal 
• metalloid