MEDIUM
Earn 100

Which of the following is a harvest festival?

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Important Questions on Food Production and Management

EASY
Name the method which you will use to separate the mixture of sand and stones. (Condensation / Sieving / Sedimentation / Hand picking)
MEDIUM
What is sieving? Where is it used? Give two examples.
MEDIUM
The process of winnowing is used to remove pebbles from grain.
MEDIUM

The statement given below is incorrect. Write the correct statement.

The process by which "paneer" is removed from curdled milk is called decantation. 

MEDIUM
What is the difference between winnowing and sieving?
EASY
Which type of components of a mixture can be separated by sieving?
MEDIUM

Fill in the blank space by choosing correct words from the list given below . 
List : evaporation, churning, threshing, sieving, sedimentation, winnowing, condensation, hand-picking. 

Corn is separated from husk by the process of _____.

EASY
Separation of tea leaves from tea can be done by sieving.
HARD
Yesterday you and a couple of your friends threw some solid substances, such as a few seeds(it is lighter than water), sand, salt, and iron filings into buckets filled with water. You were not aware that these substances were part of some materials that your father needed for a project at work. Now the substances are all mixed in the water. When your father found out about this he was not happy. He wants you to separate all the components. Design the procedure to recover all the substances.
EASY
Which type of components of a mixture can be separated by sieving?
HARD
Salt and chalk are mixed together in water. How would you separate them into dry salt and dry chalk dust?
MEDIUM
Will the process of sieving be useful if wheat flour is mixed with turmeric powder? Why?
HARD
What is winnowing? Who uses the winnowing and how?
MEDIUM
State the processes used to separate a mixture of grain and husk.
 
HARD
Reverse osmosis is a method of removing dissolved solids from liquids without boiling. Reverse osmosis is done with the help of a special semi-permeable membrane. The property of such a membrane is such that when we try to pass salty water through it, it allows water to pass but not the salt. Thus, if we pass tap water through such a membrane, only pure water will pass through it. Reverse osmosis process is being used to provide drinking water in areas where subsoil water is brackish in nature, i.e., where the salt content in underground water is so high that it becomes unfit for drinking purpose. Can you get pure water through this if you use seawater?
EASY
_____ is done to separate solid substances that are differ in size.
EASY
Winnowing is the process that can be used to separate