Separation of Substances
Description: Separation of Substances, Chemistry, Science | |
Number of Questions: 15 | |
Created by: Gagan Singh | |
Tags: Chemistry Science Threshing Methods of Separation Separation of Substances Saturated Solution Use of More Than one Method of Separation |
The method of separating the grain from the stalk is called ____________ .
Which of the following methods is not used for separation of substances?
Which of the following is a method of separating solid substances?
Which of the following combinations of separating sand, salt and water is incorrect?
Which of the following is an example of a component separated from a mixture?
Which of the following substances is insoluble in water?
What is a saturated solution?
Shilpa made tea for her mother. She noticed that the water boiled and then it decreased. What happened to the water as it boiled?
Match the methods of separation in column A from the substances it can be used to separate in Column B:
Column A | Column B |
1. Sieving | a. Grains from the stalk |
2. Decantation | b. Pebbles from sand |
3. Threshing | c. Oil and water |
Which of the following statements is false?
(P) Handpicking allows the good grains to be separated from the waste and impurities. (Q) A mixture of milk and water can be separated by filtration. (R) The method of separating seeds of paddy from its stalks is called threshing. (S) More of a substance can be dissolved in a solution by heating it. (T) Sieving is a method of separating substances that are of different sizes.
What methods of separating will he used to separate the grain seeds from the stalk and then further separation of husk from grains, before it can used it for consumption.?
Directions: Read the given scenario carefully and answer the question that follows.
Suresh is a farmer and he has just harvested the paddy crop. He wants to use the rice grains for his own consumption.
Which of the above given statements is/are correct?
Directions: Consider the following statements and answer the question that follows:
1. Filtration can be used to separate components of a mixture of an insoluble solid and a liquid.
2. Water dissolves similar amount of soluble substances in it.
3. When the heavier component in a mixture settles after water is added to it, the process is called decantation.
The process of separation used in this example is called ___________.
Directions: Read the given passage carefully and then complete the statement given below:
Shreya went for a picnic to the forest reserves. They ran out of water and her father collected water from a stream nearby. The water was slightly muddy and her father told her to wait before they could drink it. Soon impurities settled at the bottom when muddy water was kept still. The clear water was then poured off from the top.
There are three examples of separation of substances given above. Which of these three illustrations have followed the method of sedimentation to finally separate the substances?
Directions: Read the given statements carefully and answer the question that follows.
A. The steam that forms on boiling water turns back into water when it comes in contact with a cold metal lid.
B. The grains with dried husk and chaff, are separated and thrown away before the wheat can be used.
C. After a mixture of oil and water is separated, the water left behind can be further cleaned. After this it is further separated, and hence dirt will sift out, leaving the water clean.
What method will her mother have to use to separate the flour and the pulses?
Directions: Read the scenario given below carefully and answer the question that follows.
Trisha was running in the kitchen when she suddenly knocked into her mother and upset the dishes she was working with. The flour her mother had taken out to make chappatis and the pulses she was going to wash for dinner had gotten mixed up.