Clothes can dry faster on
A) windy day
B) rainy day
C) sunny day
D) drier
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The rate of evaporation of the liquid is faster in ……………………
opt B saucer this is because rate of evaporation depends on factors like wind speed, temperature, and surface area. the sauser has a larger surface area and hence water evaporates faster.
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Why is blue applied to white clothes? Present four steps of applying blue to the clothes.
Blue is applied to white clothes because- It acts as a fabric whitener/brightener Four steps of applying blue to the clothes- 1.Add blue to water and dissolve well 2.Wet the article to be blued...
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________ are used in making ropes and rough clothes.
(C) Phloem fibres
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1. (a) Is ammonia more dense or less dense than air? (b) What property of ammonia is demonstrated by the Fountain Experiment? (c) Write the balanced equation for the reaction between ammonia and sulphuric acid. 2. Pick the odd member from the list giving reasons: (a) Ammonia, sulphur dioxide, hydrogen chloride, carbon dioxide. (b) Copper oxide, aluminium oxide, sodium oxide, magnesium oxide. 3. Give reasons for the following : (a) Liquid ammonia is used as a refrigerant in ice plants. (b) Aqueous solution of ammonia is used for removing grease stains from woollen clothes. (c) Aqueous solution of ammonia gives a pungent smell. (d) Aqueous solution of ammonia conducts electricity.
(1) (a) ammonia is less dense than air (b) solubility in water (c) 2NH3 + H2SO4 → (NH4)2SO4 (2) (a) Ammonia → because - NH3 is basic while, SO2,HCl and CO2 are acidic oxides. (b) CuO,...
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The cost of one pair of clothes is ₹450. If 6% of sales tax is allowed on it then the bil has to pay
Correct option is B) ₹ 477
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The cost of one pair of clothes is ₹450. If 6% of sales tax is allowed on it then the bil has to pay
2 Answers
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The dry skinned and spiny exoskeleton animals can be seen in
C) Desert ecosystem
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In a cloudy day wet clothes do not dry quickly – because
C) high humidity
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The crops growth in the rainy season are called
The crops growth in the rainy season are called Kharif
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Match the following : 1. More industrial cities 2. Coastal areas 3. Rainy season 4. Windy places
1. – c 2. – d 3. – b 4. – a
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