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प्रश्न
How does an electric fan managed to throw so much air when it is switched on?
उत्तर
An electrical fan comprises of three blades and a whirling motor. The moment it is switched on. the motor starts and begins to rotate, forcing the blades to move in circular movement. this generates a lot of pressure, which forces the air downwards in all directions.
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संबंधित प्रश्न
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Read and enjoy :
Hockey 
Do you know when hockey was first played? Research in Ethiopia has discovered that it has been around for more than four millenia. A tablet in Greece has images of young people playing field hockey. Even in South America, Ireland, Egypt, Scotland and Rome, there are proofs and records of this game. The game in these countries was no different than the other even though it was known by different names. Hundreds of years ago, this game was known as 'Hockie' in Ireland and it is this name that has stuck with the game ever since.
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Football refers to a number of similar team sports, all of which involve (to varying degrees) kicking a ball with the foot in an attempt to score a goal. People from around the world have played games which involved kicking and / or canying a ball, since ancient times. However, most of the modern codes of football have their origins in England.
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It was a summer evening,
Old Kaspar's work was done,
And he before his cottage door
Was sitting in the sun,
And by him sported on the green
His little grandchild Wilhelmine.
She saw her brother Peterkin
Roll something large and round,
Which he beside the rivulet
In playing there had found;
He came to ask what he had found,
That was so large, and smooth, and round.
Read the lines given above and answer the question that follow.
Explain with reference to context.
The most important thing we've learned,
So far as children are concerned,
Is never, NEVER, NEVER let
Them near your television set-----
Or better still, just don't install
The Idiotic thing at all.
In almost every house we've been,
we've watched them gaping at the screen
They loll and slop and lounge about,
And stare until their eyes pop out.
(Last week in someone's place we saw
A dozen eyeballs on the floor.
They sit and stare and stare and sit
Until they're hypnotised by it,
Until they're absolutely drunk
With all that shocking ghastly junk.
Read the lines given above and answer the question given below.
Name some of the things that the poet has seen in house which have televisions.
So please, oh please, we beg, we pray,
Go throw your TV set away,
And in its place you can install
A lovely bookshelf on the wall.
Then fill the shelves with lots of books,
Ignoring all the dirty looks,
The Screams and yells,the bites and kicks,
And children hitting you with sticks-
Fear not, because we promise you
That, in about a week ot two
Of having nothing else to do,
They'll now begin to feel the need
Of having something to read.
And once they start - oh boy, oh boy!
You watch the slowly growing joy
That fills their hearts. They'll grow so keen
They'll wonder what they'd ever seen
In that ridiculous machine,
That nauseating, foul, unclean,
Repulsive television screen!
And later, each and every kid
Will love you more for what you did.
Read the lines given above and answer the question given below.
Explain with reference to context.
The athletes had come from all over the country
To run for the gold, for the silver and bronze
Many weeks and months of training
All coming down to these games.
The spectators gathered around the old field
To cheer on all the young women and men
The final event of the day was approaching
Excitement grew high to begin.
Read the lines given above and answer the following question:
What do the words ‘gold’, ‘silver’ and ‘bronze’ stand for in the poem?
The boy looked up. He took his hands from his face and looked up at his teacher. The light from Mr. Oliver’s torch fell on the boy’s face, if you could call it a face. He had no eyes, ears, nose or mouth. It was just a round smooth head with a school cap on top of it.
And that’s where the story should end, as indeed it has for several people who have had similar experiences and dropped dead of inexplicable heart attacks. But for Mr. Oliver, it did not end there. The torch fell from his trembling hand. He turned and scrambled down the path, running blindly through the trees and calling for help. He was still running towards the school buildings when he saw a lantern swinging in the middle of the path. Mr. Oliver had never before been so pleased to see the night watchman. He stumbled up to the watchman, gasping for breath and speaking incoherently.
What is it, Sahib? Asked the watchman, has there been an accident? Why are you running?
I saw something, something horrible, a boy weeping in the forest and he had no face.
No face, Sahib?
No eyes, no nose, mouth, nothing.
Do you mean it was like this, Sahib? asked the watchman, and raised the lamp to his own face. The watchman had no eyes, no ears, no features at all, not even an eyebrow. The wind blew the lamp out and Mr. Oliver had his heart attack.
Read the extract given below and answer the question that follow.
Why did Mr Oliver tell the boy that he should not be out at that hour?
“You haven’t brought home that sick brat!” Anger and astonishment were in the tones of Mrs. Joe Thompson; her face was in a flame.
“I think women’s hearts are sometimes very hard,” said Joe. Usually Joe Thompson got out of his wife’s way, or kept rigidly silent and non-combative when she fired up on any subject; it was with some surprise, therefore, that she now encountered a firmly-set countenance and a resolute pair of eyes.
“Women’s hearts are not half so hard as men’s!”
Joe saw, by a quick intuition, that his resolute bearing h«d impressed his wife and he answered quickly, and with real indignation, “Be that as it may, every woman at the funeral turned her eyes steadily from the sick child’s face, and when the cart went off with her dead mother, hurried away, and left her alone in that old hut, with the sun not an hour in the sky.”
“Where were John and Kate?” asked Mrs. Thompson.
“Farmer Jones tossed John into his wagon, and drove off. Katie went home with Mrs. Ellis; but nobody wanted the poor sick one. ‘Send her to the poorhouse,’ was the cry.”
“Why didn’t you let her go, then. What did you bring her here for?”
“She can’t walk to the poorhouse,” said Joe; “somebody’s arms must carry her, and mine are strong enough for that task.”
Read the extract given below and answer the question that follow.
How did Joe counter his wife on her remark about Maggie?
She lighted another match, and then she found herself sitting under a beautiful Christmas-tree. It was larger and more beautifully decorated than the one which she had seen through the glass door at the rich merchant’s. Thousands of tapers were burning upon the green branches, and colored pictures, like those she had seen in the show- windows, looked down upon it all. The little one stretched out her hand towards them, and the match went out.
The Christmas lights rose higher and higher, till they looked to her like the stars in the sky. Then she saw a star fall, leaving behind it a bright streak of fire. “Someone is dying,” thought the little girl, for her old grandmother, the only one who had ever loved her, and who was now dead, had told her that when a star falls, a soul was going up to God.
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What did she see when she lighted another match?
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