IIT JEE प्रश्न और उत्तर का अभ्यास करें

प्र: Oldest Oil Field in India 2013 0

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    Mumbai High, Maharashtra
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    Anleshwar, Gujarat
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  • 3
    Digboi, Assam
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  • 4
    None
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उत्तर : 3. "Digboi, Assam"
व्याख्या :

Answer: C) Digboi, Assam Explanation: Digboi has the distinction of being India's oldest continuously producing oilfield. Digboi refinery, now a division of Indian Oil Corporation, had a capacity of about 0.65 MMTPA as of 2003. Digboi is now Headquarter of Assam Oil Division of Indian Oil Corporation Limited, though the crude production is not high today.

प्र: Leakage of which of the following gases caused the Bhopal gas tragedy ? 2012 0

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    Carbon monoxide
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    Methyl isocyanate
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    Nitrous oxide
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    Hydrogen sulphide
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उत्तर : 2. "Methyl isocyanate"
व्याख्या :

Answer: B) Methyl isocyanate Explanation:

प्र: Which statement fits the Frontier Ethic? 2012 1

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    Recycle plastic
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    Help those in need
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    He who has more toys wins
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  • 4
    Walk lightly on Earth
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उत्तर : 3. "He who has more toys wins"
व्याख्या :

Answer: C) He who has more toys wins Explanation: Frontier Ethic is Spending Earth's assets at the cost of losing resource capital. A frontier ethic assumes that the earth has an unlimited supply of resources. It is the notion of disregarding the Earth for the benefit or gain of man. If resources run out in one area, more can be found elsewhere or alternatively human ingenuity will find substitutes. This attitude sees humans as masters who manage the planet. It is completely Anthropocentric.

प्र: Sumanth walks 200 feet straight from his house, which is facing north and then he walks 100 feet in reverse direction.Further he takes a left turn and walks 300 yards.In Which direction is Sumanth now from his original position? 2011 0

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    South-East
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    North-East
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    South-West
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    North-West
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उत्तर : 2. "North-East"
व्याख्या :

Answer: B) North-East Explanation: Starting From his house, Sumanth walks 200 feet straight towards North; we can write it as N200. Similarly, the other distances and directions can be considered and written as follows : (Notice that he covers 300 yards towards East; one yard = 3 feet and hence 300 yards = 900 feet)  N200S100E900 Adding all south and all North distances and finding the net result, and also adding all East and all West distances and finding the net result, this can further be summarized as : N100E900  Thus, the direction from his original position is North-East.

प्र: Vishal invested 10% more than Trishul. Trishul invested 10% less than Raghu. If the total sum of their investments is Rs. 5780, how much amount did Raghu invest ? 2011 0

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    Rs.2010
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    Rs.2200
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    Rs.2000
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  • 4
    Rs.2100
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उत्तर : 3. "Rs.2000"
व्याख्या :

Answer: C) Rs.2000 Explanation: Let money invested by Raghu = Rs. xMoney invested by Trishul = 9/10 x = 0.9xMoney invested by Vishal = 9/10x * 110/100 = 0.99xAlso, x+0.9x+0.99x = 5780= x= 5780/2.89 = 2000 Therefore, amount invested by Raghu is Rs. 2000.

प्र: The fastest growing plant is ______ ? 2011 0

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    Ashoka
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    Banyan
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    Eucalyptus
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    Rose
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उत्तर : 3. "Eucalyptus"
व्याख्या :

Answer: C) Eucalyptus Explanation:

प्र: 7 years ago, the ratio of the ages of Anirudh to that of Bhavana, was 7:9. Chandhu is 12 years older than Anirudh and 12 years younger than Bhavana. What is Chandhu's present age? 2011 0

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    91 years
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    115 years
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    103 years
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    Can't be determined
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उत्तर : 3. "103 years"
व्याख्या :

Answer: C) 103 years Explanation: Let present Anirudh's age be 'A' and Bhavana's age be 'B' Given seven years, their ratio is 7:9 => A-7 : B-7 = 7 : 9 => 9A - 7B = 14 .......(1) And given, Chandhu is 12 years older than A nad 12 years younger than B => C = A + 12....(2) => B = C + 12 => B = A + 12 + 12 .....(From (2)) => B = A + 24 ....(3) Put (3) in (1) 9A - 7(A+24) = 14 9A - 7A - 168 = 14 2A = 182 => A = 91 years => C = A + 12 = 91 +12 = 103 years.

प्र: Three friends Rudra, Siva and Anvesh start to run around a circular stadium. They complete a revolution in 24, 36 and 30 seconds respectively. After how many minutes will they meet at the starting point ? 2011 0

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    60
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    120
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    360
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    6
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उत्तर : 4. "6"
व्याख्या :

Answer: D) 6 Explanation: For this we have to find the LCM of 24, 36 and 30 LCM of 24, 36 and 30 = 360 sec 360/60 min = 6 minutes.

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