IIT JEE Practice Question and Answer

Q: Compared to land, the open oceans 1655 0

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    are rich in silica and iron
    Correct
    Wrong
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    are nutrient-poor environments
    Correct
    Wrong
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    contain unlimited nitrogen
    Correct
    Wrong
  • 4
    are nutrient-rich environments
    Correct
    Wrong
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Answer : 2. "are nutrient-poor environments"
Explanation :

Answer: B) are nutrient-poor environments Explanation:

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Answer : 4. "Rs.5000"
Explanation :

Answer: D) Rs.5000 Explanation: Let a, b and c be the amounts invested in schemes X, Y and Z respectively. Then, As we know: Simple interest (S.I.) = PTR/100 (a × 10 × 1/100) + (b × 12 × 1/100) + (c × 15 × 1/100) = 3200 = 10a + 12b + 15c = 320000 .........(1) Now, c = 240% of b = 12b/5 .........(2) And, c = 150% of a = 3a/2 => a = 2/3 c = (2 × 12)b/(3 × 5) = 8b/5 .......(3) From (1), (2) and (3), we have 16b + 12b + 36b = 320000 => 64b = 320000 => b = 5000 ∴ Sum invested in Scheme Y = Rs.5000.

Q: In how many different ways can the letters of the word 'ABYSMAL' be arranged ? 1654 0

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    5040
    Correct
    Wrong
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    3650
    Correct
    Wrong
  • 3
    4150
    Correct
    Wrong
  • 4
    2520
    Correct
    Wrong
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Answer : 4. "2520"
Explanation :

Answer: D) 2520 Explanation: Total number of letters in the word ABYSMAL are 7   Number of ways these 7 letters can be arranged are 7! ways   But the letter is repeated and this can be arranged in 2! ways   Total number of ways arranging ABYSMAL = 7!/2! = 5040/2 = 2520 ways.

Q: How many black cards are in a deck? 1653 0

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    13
    Correct
    Wrong
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    26
    Correct
    Wrong
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    39
    Correct
    Wrong
  • 4
    52
    Correct
    Wrong
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Answer : 2. "26"
Explanation :

Answer: B) 26 Explanation: The total cards in the deck are 52. These 52 cards are divided into 4 suits of 13 cards in each suit. Two Red suits and Two black suits. Red suits :: Heart suit and Diamond suit = 26 Black suits :: Spade suit and Club suit = 26.

Q: How many seconds will a 800 meter long train moving with a speed of 63 km/hr take to cross a man walking with a speed of 3 km/hr in the direction of the train ? 1653 0

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    48
    Correct
    Wrong
  • 2
    52
    Correct
    Wrong
  • 3
    38
    Correct
    Wrong
  • 4
    42
    Correct
    Wrong
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Answer : 1. "48"
Explanation :

Answer: A) 48 Explanation: Here distance d = 800 mts speed s = 63 - 3 = 60 kmph = 60 x 5/18 m/s time t = 800x1860x5= 48 sec.

Q: India's longest cable-bridge inaugurated by PM Modi in which state ? 1652 0

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    Assam
    Correct
    Wrong
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    Telangana
    Correct
    Wrong
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    Gujarat
    Correct
    Wrong
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    Karnataka
    Correct
    Wrong
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Answer : 3. "Gujarat"
Explanation :

Answer: C) Gujarat Explanation: PM Modi Inaugurated India's Longest Cable Bridge in Gujarat, a four-lane bridge over the river Narmada in Bharuch. The bridge is 1344 metres long and 22.8 metres wide. It is built by Larsen and Turbo as a part of the Rs. 379 crore project of the National Highway Authority of India.

Q: The first-ever International MSME Day 2017 has celebrated on which day  ? 1652 0

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    June 27
    Correct
    Wrong
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    June 23
    Correct
    Wrong
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    June 26
    Correct
    Wrong
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    June 28
    Correct
    Wrong
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Answer : 1. "June 27"
Explanation :

Answer: A) June 27 Explanation: The International Trade Centre (ITC) has celebrated the first-ever International MSME Day on June 27, 2017 with theme ‘Small business – big impact’. The purpose of the day is to raise public awareness about the importance of MSMEs to economic growth and international development. The Micro, Small and Medium Enterprises (MSME) Day highlights the strong contribution of MSMEs worldwide to livelihoods, communities and economies and the need to support MSMEs towards their success. The ITC is the joint agency of the UN and the WTO supporting SMEs in developing countries and transition economies for sustainable and inclusive trade.

Q: Cross Contamination is prevented by 1651 0

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Answer :
Explanation :

Cross Contamination :: Cross Contamination is nothing but a contamination in a cross way i.e, when a bacteria on a kitchen tool transfers to food via direct contact. Two of the most common kitchen tools usually tend to be a knife or a cutting board. However, it is not just bacteria that gets carried from one place to another — it could also be a virus also. Cross Contamination is prevented by the following tips :: 1. Use separate equipment 2. Clean and sanitize all work surfaces 3. Remind employees to wash their hands 4. Purchase prepared food 5. Implement a personal hygiene program.

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