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Ask QuestionPosted by Ayush Kumar Mandal 5 years, 8 months ago
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Krishna Bhagat 5 years, 8 months ago
Posted by Hardik Singh 5 years, 8 months ago
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Mayank Kr 5 years, 8 months ago
Bhawna Shukla 5 years, 8 months ago
Yogita Ingle 5 years, 8 months ago
Water vapor: We know that water present in oceans and rivers evaporates during summer and escapes into the air. Thus water vapor is one of the components of the air. It occupies very less percentage of earth’s atmosphere.
Oxygen: Have you ever tried to burn a candle in absence of air? If you would try you would notice that it doesn’t burn in absence of air. Air contains some matter which supports combustion. This substance is oxygen. Oxygen is one of the major components of air around us. Air comprises almost 21% oxygen.
Nitrogen: When you blow over a burning candle you notice that it extinguishes. This means air contains incombustible gases (gases which don’t support combustion) too. This is majorly due to the presence of nitrogen. Nitrogen occupies nearly 78% of earth’s atmosphere and is the most abundant gas on our planet.
Carbon dioxide: Carbon dioxide is mainly produced due to respiration by plants and animals or burning of fuel. It occupies 0.038% of the earth’s atmosphere. Its occupancy keeps on changing from one place to another in our atmosphere.
Smoke and dust particles: Smoke is present in our atmosphere due to the burning of fuels. Its occupancy varies from place to place. It is a mixture of gases and is often harmful. Apart from these, dust particles are also present in our atmosphere which we observe when we see a ray of light in a dark room. Smoke and dust particles occupy less than 1% of earth’s atmosphere.
Posted by Vansh Kajal 5 years, 8 months ago
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Yogita Ingle 5 years, 8 months ago
The boy named Tapan, He is the second son of Ratan the clerk of Padumani village. Although rather thin, he is strong, somewhat dark and has bright eyes. He is quite good at his studies. But both at home and outside, there is no end of his pranks. He is always getting into trouble. But it must be admitted that he is never the first to pick a quarrel. But if anybody offends him he never hesitates to give as good as he gets. He is the leader of his age group and is always ready to take up the cudgels on their behalf. He is popular and respected by his companions.
Posted by Aditya Sharma 5 years, 8 months ago
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Pulkit Rai 5 years, 8 months ago
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Bhawna Shukla 5 years, 8 months ago
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Yogita Ingle 5 years, 8 months ago
Razia Sultan was the Sultan of Delhi in India from 1236 to 1240; she the first Muslim female ruler. Her ascent to the throne is of much historical significance not only because she was a woman, but also because her ancestors were originally slaves, not nobility.
Posted by Shivali Sharma 5 years, 8 months ago
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Kanika Panwar 5 years, 8 months ago
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Mushyam Sunitha 5 years, 8 months ago
Kanika Panwar 5 years, 8 months ago
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Yogita Ingle 5 years, 8 months ago
26 November has its own importance in the history of independent India because on this day in 1949, the Constitution of India was adopted and it came in to effect on 26 January, 1950. Therefore, marking the dawn of a new era. To acknowledge the contribution of the framers of the Constitution and to aggravate the people regarding the prominent values, 26 November is celebrated as the 'Constitution Day'.
Posted by Harvinder Kaur 5 years, 8 months ago
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Prince Variya 5 years, 8 months ago
Kanika Panwar 5 years, 8 months ago
Posted by Maanya Rajpal 5 years, 8 months ago
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Posted by Saanvi Sharma 5 years, 8 months ago
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Yogita Ingle 5 years, 8 months ago
If the area of a square is 165 sq.m
area of square = (side)2
165 = (side)2
side = √165
side = 12.85 m
Posted by Meena Nagwal 5 years, 8 months ago
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Kanika Panwar 5 years, 8 months ago
Yogita Ingle 5 years, 8 months ago
Carbohydrates, proteins, fats, vitamins and minerals are essential components of food, these components are called nutrients.
Posted by Maya Pardeshi 5 years, 8 months ago
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Kanika Panwar 5 years, 8 months ago
Posted by Hardik Singh 5 years, 8 months ago
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Yogita Ingle 5 years, 8 months ago
- It is used in medicine – Saline solution in nasal spray
- It is used in fire extinguishers
- It is used in cleansers like shampoo, toothpaste
- It is used in the soda ash industry to produce sodium carbonate through Solvay process
- It is used in the paper industry, textile industry and in the construction of roads
- It is used in water softening
Posted by Hardik Singh 5 years, 8 months ago
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Aradhya Seth 5 years, 8 months ago
Yogita Ingle 5 years, 8 months ago
Photosynthesis
- The process by which plants make their own food in the presence of sunlight, carbon-dioxide present in air, water, minerals and chlorophyll present in leaves is termed as photosynthesis
- Plants take up carbon-dioxide from the atmosphere through the tiny pores known as stomata present on thesurface of the leaves and surrounded by ‘guard cells’.
- The process of photosynthesis releases oxygen in the atmosphere during the synthesis of food.
Posted by Jeevan Reddy 5 years, 8 months ago
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Posted by Anil Singh 5 years, 8 months ago
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Bhawna Shukla 5 years, 8 months ago
Anika Kanade 5 years, 8 months ago
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Shreyash Raj 5 years, 8 months ago
Posted by Anil Singh 5 years, 8 months ago
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Anika Kanade 5 years, 8 months ago
Posted by Anil Singh 5 years, 8 months ago
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Yogita Ingle 5 years, 8 months ago
Liver:
- It is a reddish brown gland situated on the right side in the upper part of the abdomen.
- It is the largest gland of our body.
Functions of liver:
- It secretes bile juice which play an important role in digestion of fats.
Posted by Anil Singh 5 years, 8 months ago
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Bhawna Shukla 5 years, 8 months ago
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Pulkit Rai 5 years, 8 months ago
1Thank You