Question 1 :
Pick one material from the following which is completely soluble in water.

Question 3 :
A Person takes a sheet of paper and looks through it towards a lighted bulb. Now, he puts 2-3 drops of some oil and spreads it on the sheet of paper. Next, he looks again towards the lighted bulb through that portion of the paper on which the oil has been spread. The bulb is more clearly visible than before. But, can he see clearly through the oiled paper?

Question 5 :
A person collect samples of vinegar, lemon juice, mustard oil or coconut oil, kerosene or any other liquid. Then, he takes a glass tumbler and fills it up to half with water. Next, he adds a few spoonfuls of lemon juice to this and stir it well. Now, he lets it stand for five minutes and observes whether the liquid mixes with water. What observation can be drawn from this?

Question 10 :
Given is the material used , accordingly list its objects . Material- Leather.

Question 11 :
A person collected samples of some solid substances such as sugar, salt, chalk powder, sand and sawdust. Then, he takes five glasses and fills each one of them about two thirds with water. Now, he adds a small amount (spoonful) of sugar to the first glass, salt to the second and similarly, adds small amounts of the other substances into the other glasses and stirs the contents of each of them with a spoon. Next, he waits for a few minutes and observes what happens to the substances added to water. What happens to the sand?

Question 12 :
Find the odd one out from the following: Rose, Jasmine, Boat, Marigold, Lotus

Question 15 :
A person collect samples of vinegar, lemon juice, mustard oil or coconut oil, kerosene or any other liquid. Then, he takes a glass tumbler and fills it up to half with water. Next, he adds a few spoonfuls of vinegar to this and stir it well. Now, he lets it stand for five minutes and observes whether the liquid mixes with water. What observation can be drawn from this?

Question 16 :
A person collect samples of vinegar, lemon juice, mustard oil or coconut oil, kerosene or any other liquid. Then, he takes a glass tumbler and fills it up to half with water. Next, he adds a few spoonfuls of kerosene to this and stir it well. Now, he lets it stand for five minutes and observes whether the liquid mixes with water. What observation can be drawn from this?

Question 17 :
Which pair of substances among the following would float in a tumbler half filled with water?

Question 18 :
Given below are the names of some objects and materials: Water, basketball, orange, sugar, globe, apple and earthen pitcher. Group them as: Round shaped and other shapes