IIT JEE प्रश्न और उत्तर का अभ्यास करें

नवीनतमलोकप्रियमूल्यांकनपेज देखें 42 of 416कुल सवाल 3327 जॉइन Examsbook

प्र: In an objective competitive exam, a correct answer score 4 marks and on a wrong answer 2 marks are negatively added. A student scores 420 marks from 150 question. How many answers were correct ? 4585 0

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    145
    सही
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  • 2
    138
    सही
    गलत
  • 3
    125
    सही
    गलत
  • 4
    120
    सही
    गलत
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उत्तर : 4. "120"
व्याख्या :

Answer: D) 120 Explanation: let x be the correct answer and y be the wrong answerso the total number of questions is (x + y) = 150.....(1)=> 4x - 2y = 420.....(2)By solving (1) & (2), we get => 6x = 720hence x = 120Therefore, number of correct answers are 120.

प्र: The gas provider Centrica has seen its half-year profits fall by 20% to £992 million. Despite this it has decided to increase its dividend to shareholders to 3.9p per share. The rise in energy prices released before the announcement of Centrica's profits was designed, said the company, to restore "reasonable profitability". The chief executive, Sam Laidlaw, said, "We produced a good set of results in tough market conditions... we will continue to concentrate on improving customer service in British Gas..." This is an interesting statement given the record rise in prices to households. The announcement of profits which are not far off one billion pounds, a day after the announcement of the rise in price and the increase in dividend to shareholders, is likely to provoke angry reaction. Many will question the extent of the market power that Centrica possesses. There will also be those that will question what the phrase 'reasonable profitability' means in the context of profits of nearly one billion pounds. Question: 1) Announcing large profits, soon after announcing price rises, is likely to provoke angry reaction. Question: 2) Companies increase shareholder dividends when profits fall. Question: 3) One way companies can restore profitability is to increase prices. 4583 0

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उत्तर :
व्याख्या :

Answer 1) True Answer 2) Cannot tell Answer 3) True

प्र: Which of the Phrases(1), (2), (3) and (4) given below each sentence should replace the phrases printed in bold in the sentence to make it grammatically correct. The ban is applied by the district’s commercial taxes department after protests by a community, which had threat to burn theatres screening the controversial movie. 4582 0

  • 1
    had threated to burn
    सही
    गलत
  • 2
    had threatened to burn
    सही
    गलत
  • 3
    had threatened to burning
    सही
    गलत
  • 4
    had threats of burning
    सही
    गलत
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उत्तर : 2. "had threatened to burn"
व्याख्या :

Answer: B) had threatened to burn Explanation:

प्र: There are three rooms in a Hotel: one single, one double and one for four persons. How many ways are there to house seven persons in these rooms ? 4582 0

  • 1
    105
    सही
    गलत
  • 2
    7! x 6!
    सही
    गलत
  • 3
    7!/5!
    सही
    गलत
  • 4
    420
    सही
    गलत
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उत्तर : 1. "105"
व्याख्या :

Answer: A) 105 Explanation: Choose 1 person for the single room & from the remaining choose 2 for the double room & from the remaining choose 4 people for the four person room,   Then, 7C1 x 6C2 x 4C4  = 7 x 15 x 1 = 105

प्र: Smallest Taluk in Kerala State? 4564 0

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    Kunnathur
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  • 2
    Eranad
    सही
    गलत
  • 3
    Palakkad
    सही
    गलत
  • 4
    Alappuzha
    सही
    गलत
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उत्तर : 1. "Kunnathur"
व्याख्या :

Answer: A) Kunnathur Explanation: Kunnathur is the Smallest Taluk in Kerala State.   Taluk : In Kerala, the administrative divisions below the district are called Taluk. There are 77 Taluks in Kerala State. Eranad is the Largest Taluk in Kerala State. Palakkad is the Largest District in Kerala State. Alappuzha is the Smallest District in Kerala State.

प्र: Vinod have 20 rupees. He bought 1, 2, 5 rupee stamps. They are different in numbers by the reason of no change, the shop keeper gives 3 one rupee stamps. So how many stamps Vinod have ? 4552 0

  • 1
    10
    सही
    गलत
  • 2
    18
    सही
    गलत
  • 3
    12
    सही
    गलत
  • 4
    15
    सही
    गलत
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उत्तर : 1. "10"
व्याख्या :

Answer: A) 10 Explanation: Given total rupees = 20 RsNo. of one rupee stamps = 3Now, remaining money = Rs. 17With that he buys only 2 and 5 rupee stampsLet number of Rs. 5 stamps = KLet number of Rs. 2 stamps = L5K + 2L = 17K = 3, L = 1 (possible)L = 6, K = 1 (possible)=> But given that they are different in number so, K is not equal to 3one rupee stamps = 32 two stamps = 65 rupee stamps = 1Total number of stamps = 10.

प्र: Ezra cup is associated with which sports? 4547 0

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    Hockey
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    Polo
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  • 3
    Rowing
    सही
    गलत
  • 4
    Football
    सही
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उत्तर : 2. "Polo"
व्याख्या :

Answer: B) Polo Explanation: The Ezra Cup is a popular polo tournament conducted annually in India. The Calcutta Polo Club runs this oldest and first ever Polo Trophy. The first Ezra Cup was held in 1880. After a period of inactivity, it has now been revived by Mr. Keshav Bangur, Calcutta Polo Club's president.

प्र: इनमें से कौन एक साधारण मशीन नहीं है? 4542 1

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    कैंची की एक जोड़ी
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  • 2
    एक लीवर
    सही
    गलत
  • 3
    एक रैंप
    सही
    गलत
  • 4
    चरखी
    सही
    गलत
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उत्तर : 1. "कैंची की एक जोड़ी"
व्याख्या :

Answer: A) कैंची की एक जोड़ी व्याख्या: बल लगाने के लिए किसी भी बुनियादी यांत्रिक उपकरण को सरल मशीन कहा जाता है। 6 बुनियादी सरल मशीनें हैं; लीवर, पहिया और धुरी, झुका हुआ विमान, पच्चर, चरखी और पेंच। इनमें से कई सरल मशीनें एक दूसरे से संबंधित हैं। लेकिन, काम करने की दुनिया में प्रत्येक का एक विशिष्ट उद्देश्य होता है।

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