Wheat dough if left in the open, after a few days, starts to emit a foul smell and becomes unfit for use. Give reason.
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Which of the following are matter? Chair, air, love, smell, hate, almonds, thought, cold, cold drink, smell of perfume.
Anything that occupies space and has mass is called matter. Matter can exist in three physical states—solid, liquid, and gaseous. Chair and almond are forms of matter in the solid state. Cold...
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Paheli was feeling thirsty but there was only a pot of water at home which was muddy and unfit for drinking.
(i) Filtration using muslin cloth. (ii) Swirl with alum and leave water undisturbed for some time. (iii) Decantation. (iv) Boil for 10 minutes in covered pan. (v) Cool, filter and now it is fit...
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Paheli mixed flour and water and (i) made a dough, (ii) rolled the dough to make a chapati,
Changes (i), (iii) and (iv) cannot be reversed, change (ii) can be reversed.
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On heating ferrous sulphate crystals, one would get (A) sweet smell (B) rotten egg smell
(C) irritating choking smell
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A silver article generally turns black when kept in open for a few days. The article when rubbed with toothpaste again starts shining.
i. Silver reacts with hydrogen sulphide gas present in air and forms a compound Ag2S. This compound is black in colour. Hence, silver articles turn black when kept in the...
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A canteen requires 112 kgs of wheat for one week. How many kgs of wheat will it require for 69 days?
(c) Quantity of wheat for 7 days = 112 kg Quantity of wheat for 1 day = 112/7kg Quantity of wheat for 69 days = 112/ 7 × 69 = 1104...
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The wheat sold by a grocer contained 10% low quality wheat. What quantity of good quality wheat should be
(a) Weight of low quality of wheat in 150 kgs of wheat = 150 x 10/100 = 15 kg. Suppose that x kgs of good quality wheat is mixed. According to the...
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When do you find your sense of smell helpful to you? List some examples. Like to know by its smell that food
Besides smelling the bad food and the smell of burning our sense of smell helps us to choose good food, perfume, soap, incense stick etc. and also to find out...
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Write the names of five things whose smell you like and five things whose smell you do not like.
I like the smell of I don’t like the smell of 1. Food 1. Filth 2. Perfume 2. Death and decaying things 3. Flower 3. Drains 4. Cosmetic items 4. Gutter 5. Incense stick 5. Bad smelling chemicals
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Name the land with deep channels that is unfit for cultivation.
Bad land......
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