Science Quiz

What are the two main types of crop? Give two examples of each.

Write two important uses of coke?

What is the purpose of irrigation in crop production? Explain briefly.

Paheli watched her grandmother making mango pickle. After she bottled the pickle, her grandmother poured oil on top of the pickle before closing the lid. Paheli wanted to know why oil was poured. Can you help her understand why?

While driving, what are the tips we must follow to save petrol/ diesel/natural gas?

Paddy is a major cereal crop in our country. (a) In which season is paddy cultivated? (b) Discuss the method of sowing. (c) What measures must be taken to prevent spoilage and insect attack of harvested grains?

Explain how fertilizers are different from manure.

What are the various ways in which microorganisms are useful to humans and the environment?

Describe the process of coal formation and describe its importance in our daily life.

What is the process of conversion of coal into petroleum called?

• Carbonation

• Hydrogenation

• Cracking

• Refining