IIT JEE प्रश्न और उत्तर का अभ्यास करें

प्र: Which of the following contributed to the failure of prohibition? 4363 0

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    it was not imposed strictly on immigrants
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    many americans didnt consider drinking to be a crime
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    it adversely affected american productivity
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  • 4
    organized crime controlled illegal alcohol production
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उत्तर : 4. "organized crime controlled illegal alcohol production"
व्याख्या :

Answer: D) organized crime controlled illegal alcohol production Explanation: Crime connected with illegal alcohol production and sale became a major issue so that even many people who had originally supported Prohibition decided that it needed to be repealed.

प्र: Ezra cup is associated with which sports? 4362 0

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    Hockey
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  • 2
    Polo
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  • 3
    Rowing
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  • 4
    Football
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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: 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 ? 4361 0

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    10
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  • 2
    18
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  • 3
    12
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  • 4
    15
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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: A company requires 12,100 strength. Present employees are 400 ladies and 6400 gents. To reach the target how many ladies required to maintain the same ratio ? 4356 0

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    400
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  • 2
    600
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  • 3
    900
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  • 4
    700
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उत्तर : 3. "900"
व्याख्या :

Answer: C) 900 Explanation: 6,400 gents, 2400 ladies in that company.So total 8,800employees.for 8,800 employees, we want 2400 ladies.for 12,100employees we want how many ladies ?=> (12,100/8,800) x 2400 = 3300.So we want 3300 - 2400 = 900 more ladies.

प्र: If the selling price of a mat is five times the discount offered and if the percentage of discount is equal to the percentage profit, find the ratio of the discount offered to the cost price. 4356 0

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    6:31
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    11:30
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  • 3
    7:30
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  • 4
    31:6
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उत्तर : 3. "7:30"
व्याख्या :

Answer: C) 7:30 Explanation: Since S.P. = 5 (M.P. - S.P.) => 5 M.P. = 6 S.P.M.P. = (6/5) S.P.Since the percentage discount = Percentage profit,65S.P - S.P65S.P×100 = S.P -C.PC.P×100Therefore, 1/6 = (S.P/C.P) – 1 => S.P = (7/6) C.PM.P = 6/5 S.P = 6/5 x 7/6 C.P = 7/5 C.PTherefore, Ratio of discount to C.P= (M.P – S.P)/C.P = [{(7/5)C.P - (7/6)C.P} / C.P.]= 7/30   Therefore, the ratio is 7 : 30

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उत्तर : 4. "Rs. 1,00,000"
व्याख्या :

Answer: D) Rs. 1,00,000 Explanation: Deepa invested Rs.50,000 for 12 months, Rs.(50000 + 20000) for 12 months and Rs.(50000 + 20000 + 20000) for 12 months.i.e, she invested Rs.50,000 for 12 months, Rs.70000 for 12 months and Rs.90000 for 12 months.Sushma invested Rs. 70000 for 2 years; i.e, Rs.70000 for 24 monthsAnd, Avanthi invested Rs.70000 for 1 year; i.e, Rs. 70000 for 12 months. Their investing ratio:Deepa : Sushma : Avanthi = (50,000 x 12 + 70000 x 12 + 90000 x 12):(70000 x 24):(70000 x 12)= (25,20,000):(16,80,000):(8,40,000) = 252:168:84 = 3:2:1 Total profit for 3 years = Rs.3,00,000Therefore, Sushma's share = Rs.(3,00,000 x 2 /(3+2+1)) = Rs.(3,00,000 x 2/6) = Rs.1,00,000.

प्र: 96 is divided into two parts in such a way that seventh part of first and ninth part of second are equal. Find the smallest part ? 4351 0

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    42
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  • 2
    54
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  • 3
    46
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    58
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उत्तर : 1. "42"
व्याख्या :

Answer: A) 42 Explanation: Let x and y be the two parts of 96. x/7 = y/9 => x:y = 7:9 => The smallest part is = 7/16 x 96 = 42.

प्र: One reason the skeletal system is important is because 4350 0

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    the skeletal system creates the connective tissue and tendons that allow the body to move
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    the skeletal system is responsible for controlling functions of the entire body
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    without the skeletal system, an individual would not have enough calcium to live
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    the skeletal system is solely responsible for housing the body's immune system
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उत्तर : 1. "the skeletal system creates the connective tissue and tendons that allow the body to move"
व्याख्या :

Answer: A) the skeletal system creates the connective tissue and tendons that allow the body to move Explanation: One reason the skeletal system is important is because the skeletal system creates the connective tissue and tendons that allow the body to move.

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