IIT JEE प्रश्न और उत्तर का अभ्यास करें

प्र: The First Indian city to get " Electric Radio Cabs " is ? 1396 0

  • 1
    Goa
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  • 2
    Delhi
    सही
    गलत
  • 3
    Hyderabad
    सही
    गलत
  • 4
    Nagpur
    सही
    गलत
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उत्तर : 4. "Nagpur"
व्याख्या :

Answer: D) Nagpur Explanation: With India's pledge to go all electric by 2030, Nagpur will be the first city in the country to adopt electric cabs as the country moves a step closer to its goal. The pilot project will see around 200 e-cabs in Nagpur with the local body to provide for the charging stations across the city. Currently, Mahindra and Honda are few of the car-manufacturers who have electric and hybrid vehicles in their line-up. We do hope that the situation changes, as hybrid and electric vehicles will help in the growing pollution in India. Countries such as France, Netherland and Belgium have already started to adopt electric and hybrid vehicles.

प्र: A tailor has 37.5 metres of cloth and he has to make 8 pieces out of a metre of cloth. How many pieces can he make out of half of the cloth he has ? 2257 0

  • 1
    300
    सही
    गलत
  • 2
    150
    सही
    गलत
  • 3
    175
    सही
    गलत
  • 4
    200
    सही
    गलत
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उत्तर : 2. "150"
व्याख्या :

Answer: B) 150 Explanation: Half of the cloth = 37.5/2 From 1 meter he will make 8 pieces=> in 37.5/2 ---- ? 37.5/2 x 8 = 150.

प्र: Which Indian airport has become the busiest single-runway airport in the world with 1 flight in 65 seconds ? 1407 0

  • 1
    Chennai International Airport
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    गलत
  • 2
    Chhatrapati Shivaji International Airport
    सही
    गलत
  • 3
    Indira Gandhi International Airport
    सही
    गलत
  • 4
    Kempegowda International Airport
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उत्तर : 2. "Chhatrapati Shivaji International Airport"
व्याख्या :

Answer: B) Chhatrapati Shivaji International Airport Explanation: The GVK group-run Mumbai airport has become the world’s busiest amongst the single-runway facilities by handling 837 flights a day or one in 65 seconds on an average in fiscal 2017.

प्र: 4 men and 6 women can complete a work in 8 days, while 3 men and 7 women can complete it in 10 days. In how many days will 10 women complete it ? 1166 0

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    40 days
    सही
    गलत
  • 2
    36 days
    सही
    गलत
  • 3
    32 days
    सही
    गलत
  • 4
    34 days
    सही
    गलत
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उत्तर : 1. "40 days"
व्याख्या :

Answer: A) 40 days Explanation: Let 1 man's 1 day work = x and 1 woman's 1 day work = y.Then, 4x + 6y = 1/8 and 3x + 7y = 1/10Solving these two equations, we get:x = 11/400 and y = 1/40010 woman's 1 day work = (1/400 x 10) = 1/40. Hence, 10 women will complete the work in 40 days.

प्र: Find the C.I. on Rs. 15,225 for 9 months at 16% per annum compounded quarterly ? 1566 0

  • 1
    Rs. 1911
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    गलत
  • 2
    Rs. 1909
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  • 3
    Rs. 1901
    सही
    गलत
  • 4
    Rs. 1907
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उत्तर : 3. "Rs. 1901"
व्याख्या :

Answer: C) Rs. 1901 Explanation: P = Rs. 15225, n = 9 months = 3 quarters, R = 16% p.a. per quarter.   Amount = 15225x1+41003   = (15225 x 26/25 x 26/25 x 26/25) = Rs. 17126.05   => C.I. = 17126 - 15625 = Rs. 1901.05.

प्र: A man walks at a speed of 2 km/hr and runs at a speed of 6 km/hr. How much time will the man require to cover a distance of 20 1/2 km, if he completes half of the distance, i.e., (10 1/4) km on foot and the other half by running ? 1501 0

  • 1
    12.4 hrs
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    गलत
  • 2
    11.9 hrs
    सही
    गलत
  • 3
    10.7 hrs
    सही
    गलत
  • 4
    9.9 hrs
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उत्तर : 2. "11.9 hrs"
व्याख्या :

Answer: B) 11.9 hrs Explanation: We know that Time = Distance/speedRequired time = (10 1/4)/2 + (10 1/4)/6 = 41/8 + 41/6= 287/24 = 11.9 hours.

प्र: The ratio of investments of two partners A and B is 7:5 and the ratio of their profits is 7:10. If A invested the money for 5 months, find for how much time did B invest the money ? 1901 0

  • 1
    11 months
    सही
    गलत
  • 2
    9 months
    सही
    गलत
  • 3
    7 months
    सही
    गलत
  • 4
    10 months
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उत्तर : 4. "10 months"
व्याख्या :

Answer: D) 10 months Explanation: 7x5: 5xk = 7:10k = 10 months

प्र: The sum of three numbers is 98. If the ratio of the first to the second is 2:3. And that of the second to the third is 5:8, then the second number is: 1384 0

  • 1
    30
    सही
    गलत
  • 2
    27
    सही
    गलत
  • 3
    23
    सही
    गलत
  • 4
    33
    सही
    गलत
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उत्तर : 1. "30"
व्याख्या :

Answer: A) 30 Explanation: Then, A:B = 2:3 and B:C = 5:8= (5 x 3/5) : (8 x 3/5) = 3:24/5A:B:C = 2:3:24/5= 10:15:24 => B = 98 x 15/49 = 30.

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