Question 1 : What is the purpose for which we do the following separation process? Separate tea leaves.

Question 2 : A person adds two spoons of salt to water in a beaker and stirs it well. Now, he heats the beaker containing the salt water . Next, he lets the water boil away. What is left in the beaker?

Question 3 : Sheela, Saima and Ravi have to dissolve maximum amount of sugar in the same amount of milk so as to win in a game. Ravi took hot boiling milk while Saima took ice cold milk. Sheela managed to get milk at room temperature. Whom do you think would win the game?

Question 4 : State whether the following statements are TRUE or FALSE : A mixture of wheat grains and rice flakes can be separated by winnowing.

Question 6 : Fill in the blanks with appropriate words: Filtration is helpful in separating an insoluble solid from a ____________.

Question 7 : Read the story 'WISE FARMER' and choose the correct option to complete the story. After gathering the seed grains he wanted to separate the stones and husk from it. His wife __________ them to separate the husk and later____________ to remove stones from it.

Question 8 : A student brings a packet of food grain purchased from a shop to the classroom. Now, he spreads the grains on a sheet of paper. Are there pieces of stone, husks, broken grain and particles of any other grain in it?

Question 9 : State True or False: Grain and husk can be separated with the process of decantation.

Question 10 : Fill in the blanks with appropriate words: Filtration is helpful in separating an insoluble __________ from a liquid.

Question 11 : To prepare a dish with a flour, its needed to remove impurities and bran that may be present in it. What do we do?

Question 13 : A person makes a mixture of dry sand with sawdust or powdered dry leaves and keeps this mixture on a plate or a newspaper. Next, he looks at this mixture carefully. Would it be possible to separate the components by handpicking?

Question 15 : Paheli bought some vegetables such as french beans, lady's finger, green chillies, brinjals and potatoes all mixed in a bag. Which of the following methods of separation would be most appropriate for her to separate them?

Question 16 : A person mixes some soil to water in a glass and lets it stand for half an hour. Some soil settles at the bottom of water. Now, he slightly tilts the glass without disturbing the water and lets the water from the top flow into another glass as shown in the figure. What will you call this process?

Question 17 : A person needs to separate salt and water from the decanted liquid. So, he transfers this liquid to a kettle and close its lid. Then, he heats the kettle for some time and steam comes out. Now, he takes a metal plate with some ice on it and holds the plate just above the spout of the kettle. What will he observe?

Question 18 : Four mixtures are given below: (i) Kidney beans and chickpeas (ii) Pulses and rice (iii) Rice flakes and corn (iv) Potato wafers and biscuits . Which of these can be separated by the method of winnowing?

Question 19 : State whether the following statements are TRUE or FALSE : A mixture of iron filings and rice flour can be separated by magnet.

Question 20 : A person adds two spoons of salt to water in a beaker and stirs it well. Is there any change in the colour of water?