IIT JEE Practice Question and Answer

Q: 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. 4022 0

  • 1
    had threated to burn
    Correct
    Wrong
  • 2
    had threatened to burn
    Correct
    Wrong
  • 3
    had threatened to burning
    Correct
    Wrong
  • 4
    had threats of burning
    Correct
    Wrong
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Answer : 2. "had threatened to burn"
Explanation :

Answer: B) had threatened to burn Explanation:

Q: The first synthetic fibre made by man was ____ ? 4014 1

  • 1
    Rayon
    Correct
    Wrong
  • 2
    Terycott
    Correct
    Wrong
  • 3
    Polyester
    Correct
    Wrong
  • 4
    Nylon
    Correct
    Wrong
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Answer : 4. "Nylon"
Explanation :

Answer: D) Nylon Explanation:

Q: In how many years, Rs. 200 will produce the same interest @ 5 % as Rs. 900 produce in 2 years @ 3 ½ %  ? 3997 0

  • 1
    5.2 yrs
    Correct
    Wrong
  • 2
    7 yrs
    Correct
    Wrong
  • 3
    7.9 yrs
    Correct
    Wrong
  • 4
    6.3 yrs
    Correct
    Wrong
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Answer : 4. "6.3 yrs"
Explanation :

Answer: D) 6.3 yrs Explanation: P = Rs. 900, R = 3 ½ % = 7/2 %, T = 2 years.  Therefore,  S.I. = PTR/100 S.I. = Rs. (900 x 7/2 x 2/100) = Rs. 63 Now, P = Rs. 200, S.I. = Rs. 63, R = 5 % Time = ((100 x 63) / (200 x 5) ) years = 6.3 years.

Q: A boatman can row 96 km downstream in 8 hr. If the speed of the current is 4 km/hr, then find in what time he will be able to cover 8 km upstream ? 3989 0

  • 1
    1.5 hrs
    Correct
    Wrong
  • 2
    1 hrs
    Correct
    Wrong
  • 3
    2.5 hrs
    Correct
    Wrong
  • 4
    2 hrs
    Correct
    Wrong
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Answer : 4. "2 hrs"
Explanation :

Answer: D) 2 hrs Explanation: Speed in downstream = 96/8 = 12 kmph Speed of current = 4 km/hr Speed of the boatman in still water = 12 – 4 = 8 kmph Speed in upstream = 8 – 4 = 4 kmph Time taken to cover 8 km upstream = 8/4 = 2 hours.

Q: The first Law Officer of the Government of India is the 3986 0

  • 1
    Union Law Minister
    Correct
    Wrong
  • 2
    Secreatary, Ministry of Law
    Correct
    Wrong
  • 3
    Attorney-General for India
    Correct
    Wrong
  • 4
    Chief Justice of the Supreme Court
    Correct
    Wrong
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Answer : 3. "Attorney-General for India"
Explanation :

Answer: C) Attorney-General for India Explanation: Attorney-General for India is the  first Law Officer of the Government of India. He is is the Indian government's chief legal advisor, and its primary lawyer in the Supreme Court of India. The Solicitor General of India is below the Attorney General for India, who is the secondary law officer of the country, assists the Attorney General, and is himself assisted by several Additional Solicitors General of India.

Q: In a certain code language, 'how can you go' is written as 'ja da ka pa', 'can you come here' is written as 'na ka sa ja' and 'cone and go' is written as 'ra pa sa'. How is 'here' written in that code ? 3967 0

  • 1
    na
    Correct
    Wrong
  • 2
    ja
    Correct
    Wrong
  • 3
    sa
    Correct
    Wrong
  • 4
    None
    Correct
    Wrong
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Answer : 1. "na"
Explanation :

Answer: A) na Explanation: From the given information : how can you go = ja da ka pa....(1)can you come here = na ka sa ja...(2)come and go = ra pa sa....(3)from (1)&(2), can you = ja ka...(4)from (2)&(3), come = sa...(5)Using (4)&(5) in (2), we get here = na.

Q: The wages of labourers in a factory increases in the ratio 22:25 and there was a reduction in the number of labourers in the ratio 15:11. Find the original wage bill if the present bill is Rs. 5000 ? 3966 0

  • 1
    Rs. 5500
    Correct
    Wrong
  • 2
    Rs. 6000
    Correct
    Wrong
  • 3
    Rs. 6200
    Correct
    Wrong
  • 4
    Rs. 6350
    Correct
    Wrong
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Answer : 2. "Rs. 6000"
Explanation :

Answer: B) Rs. 6000 Explanation: The wages of labourers in a factory increases in the ratio 22:25 and there was a reduction in the number of labourers in the ratio 15:11. Find the original wage bill if the present bill is Rs 5000 ?Ratio of increase of wages = 22:25Ratio of decrease of labourers = 15:11Compound ratio of wages of labourers = 22 x 15 : 25 x 11 = 330:275Final bill = Rs. 5000For 275 ratio wages = Rs. 5000For 1 ratio wages = 5000/275For 330 ratio wages = 5000/275 x 330 = Rs. 6000

Q: Essential Part for the given word from the following options. Respiration 3965 0

  • 1
    Oxygen
    Correct
    Wrong
  • 2
    Carbon monoxide
    Correct
    Wrong
  • 3
    Mouth
    Correct
    Wrong
  • 4
    Circulation
    Correct
    Wrong
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Answer : 1. "Oxygen"
Explanation :

Answer: A) Oxygen Explanation: A person or animal must take in oxygen for respiration to occur. A mouth (choice a) is not essential because breathing can occur through the nose. Choices b and d are clearly not essential and can be ruled out.

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