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BidishaKashayap1333
@bidishakashayap1333
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Joined: Oct 11, 2021
Last seen: Jul 27, 2023
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Topics: 2174 / Replies: 0
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Topic
Explain why, when a bottle of perfume is opened in a room, we can smell it even from a considerable distance.
4 years ago
Forum
Matter in Our Surroundings
Replies: 0
Views: 263
Topic
Explain how, the smell of being cooked in the kitchen reaches us even from a considerable distance.
4 years ago
Forum
Matter in Our Surroundings
Replies: 0
Views: 106
Topic
Give reason of the following observation: The smell of hot sizzling food reaches us even from a considerable distance but to get the smell from cold food, we have to go close to it.
4 years ago
Forum
Matter in Our Surroundings
Replies: 0
Views: 103
Topic
What does the diffusion of gases tell us about their particles? (b) Give one example of diffusion of gases in a liquid.
4 years ago
Forum
Matter in Our Surroundings
Replies: 0
Views: 237
Topic
When an incense stick (agarbatti) is lighted in one corner of a room, its fragrance quickly spreads in the entire room. Name the process involved in this. (b) A girl is cooking some food in the kitchen. The smell of food being cooked soon reaches he...
4 years ago
Forum
Matter in Our Surroundings
Replies: 0
Views: 74
Topic
Give two reasons to justify that: (a) Water is a liquid at room temperature. (b) An iron almirah is a solid.
4 years ago
Forum
Matter in Our Surroundings
Replies: 0
Views: 90
Topic
Arrange the following substances in increasing order of force of attraction between their particles (keeping the substance having the minimum force of attraction first): Water, Sugar, Oxygen
4 years ago
Forum
Matter in Our Surroundings
Replies: 0
Views: 180
Topic
How do solid, liquids and gases differ in shape and volume?
4 years ago
Forum
Matter in Our Surroundings
Replies: 0
Views: 106
Topic
Why do gases have neither a fixed shape nor a fixed volume?
4 years ago
Forum
Matter in Our Surroundings
Replies: 0
Views: 217
Topic
State two characteristic properties each of: (a) a solid (b) a liquid (c) a gas
4 years ago
Forum
Matter in Our Surroundings
Replies: 0
Views: 122
Topic
Name the three states of matter. Give one example of each.
4 years ago
Forum
Matter in Our Surroundings
Replies: 0
Views: 87
Topic
Explain the following: When an incense stick is lighted in the corner of a room, its fragrance spreads quickly in the entire room.
4 years ago
Forum
Matter in Our Surroundings
Replies: 0
Views: 80
Topic
Which of the following diffuses fastest and which the slowest? Solid, Liquid and Gas. Give reasons for your answer.
4 years ago
Forum
Matter in Our Surroundings
Replies: 0
Views: 111
Topic
Explain why, the diffusion of the solid in another solid is a very slow process.
4 years ago
Forum
Matter in Our Surroundings
Replies: 0
Views: 298
Topic
Give one example of the diffusion of a solid in another solid.
4 years ago
Forum
Matter in Our Surroundings
Replies: 0
Views: 91
Topic
Explain why, we can easily move our hand in air but to do the same through a plank of wood, we need a karate expert.
4 years ago
Forum
Matter in Our Surroundings
Replies: 0
Views: 210
Topic
Describe in your own words, what happens to the particles when salt dissolves in water.
4 years ago
Forum
Matter in Our Surroundings
Replies: 0
Views: 187
Topic
When a gas jar containing air is inverted over a gas jar containing bromine vapour, the red-brown bromine vapour diffuse into air. Explain how bromine vapour diffuses into air.
4 years ago
Forum
Matter in Our Surroundings
Replies: 0
Views: 102
Topic
When a crystal of potassium permanganate is placed in a beaker, its purple colour spreads throughout the water. What does this observation tell us about the nature of potassium permanganate and water?
4 years ago
Forum
Matter in Our Surroundings
Replies: 0
Views: 95
Topic
Name the scientist who studied the movement of pollen grains suspended in water through a microscope. What is the phenomenon known as?
4 years ago
Forum
Matter in Our Surroundings
Replies: 0
Views: 303
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