IIT JEE Practice Question and Answer

Q: At what time between 2 and 3 O'clock, the hands of a clock coincide ? 2023 0

  • 1
    1 10/11 minutes past 2
    Correct
    Wrong
  • 2
    1 10/11 minutes past 3
    Correct
    Wrong
  • 3
    1 11/10 minutes past 3
    Correct
    Wrong
  • 4
    11 10/11 minutes past 2
    Correct
    Wrong
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Answer : 1. "1 10/11 minutes past 2"
Explanation :

Answer: A) 1 10/11 minutes past 2 Explanation: Since, in one hour, two hands of a clock coincide only once, so, there will be value.Required time T = 211H×30 + Ao minutes past H.Here H - initial position of hour hand = 2 (since 2 O'clock)A° = Required angle = 0° (Since it coincides)   T = 2112×30 + 0o minutes past 2    => 11011 minutes past 2

Q: Cosmetic powders are prepared from 2023 0

  • 1
    Talc
    Correct
    Wrong
  • 2
    Serpentine
    Correct
    Wrong
  • 3
    Asbestos
    Correct
    Wrong
  • 4
    Gypsum
    Correct
    Wrong
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Answer : 1. "Talc"
Explanation :

Answer: A) Talc Explanation: Cosmetic powders are prepared from Talc. Face powder is a cosmetic powder applied to the face to set a foundation after application. It can also be reapplied throughout the day to minimize shininess caused by oily skin. There is translucent sheer powder, and there is pigmented powder.

Q: How many Indian states share border with Myanmar  ? 2019 0

  • 1
    6
    Correct
    Wrong
  • 2
    7
    Correct
    Wrong
  • 3
    3
    Correct
    Wrong
  • 4
    4
    Correct
    Wrong
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Answer : 4. "4"
Explanation :

Answer: D) 4 Explanation: The four northeast Indian states share 1,643-km border with Myanmar – Arunachal Pradesh, Nagaland, Mizoram and Manipur. It is in news recently, because the Indian Government has set up an expert committee to examine the rules which allow free movement of Indian and Myanmarese citizens within 16 kms of the border, but are exploited by militants for smuggling arms, drugs, and fake Indian currency. The committee will be headed by the special secretary (Internal Security) in the Ministry of Home Affairs. The committee will give its report for uniform and effective implementation of free movement regime within 3 months. It will also prepare standard operating procedures common for all the four states so that militants, criminals and contraband are filtered at the border without causing inconvenience to genuine people.

Q: 28 Men and 52 women working together completes a work in 22.5 days. 35 men and 65 women working together on same work will complete it in how many days? 2019 0

  • 1
    16
    Correct
    Wrong
  • 2
    18
    Correct
    Wrong
  • 3
    19
    Correct
    Wrong
  • 4
    21
    Correct
    Wrong
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Answer : 2. "18"
Explanation :

Answer: B) 18 Explanation: Clearly total persons are increased in  28/35 :: 52/65 = 4:5. As time is inversely proportional to men, so total time will decrease in the ratio 5:4. Hence, 22.5 x 4/5 = 18 days.

Q: Pollination by wind is called 2018 0

  • 1
    Hydrophily
    Correct
    Wrong
  • 2
    Entomophily
    Correct
    Wrong
  • 3
    Anemophily
    Correct
    Wrong
  • 4
    Zoophily
    Correct
    Wrong
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Answer : 3. "Anemophily"
Explanation :

Answer: C) Anemophily Explanation: Pollination by wind is called Anemophily or Wind pollination. The process of the transfer of pollen from one individual plant to another, whereby the pollen is carried by air currents is called Anemophily.   Almost all gymnosperms (Non-flowering plants) are anemophilous, as are many plants in the order Poales, including grasses, sedges and rushes.

Q: Callous is the opposite of 2018 0

  • 1
    emotionally hardened
    Correct
    Wrong
  • 2
    insensitive
    Correct
    Wrong
  • 3
    sympathetic
    Correct
    Wrong
  • 4
    Unkind
    Correct
    Wrong
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Answer : 3. "sympathetic"
Explanation :

Answer: C) sympathetic Explanation: A callous person is insensitive or emotionally hardened.   Hence, Callous is the opposite of Sympathetic, kind hearted, sensitive, nice,...

Q: In which year was the Supreme Court of India established? 2017 0

  • 1
    1951
    Correct
    Wrong
  • 2
    1949
    Correct
    Wrong
  • 3
    1950
    Correct
    Wrong
  • 4
    1947
    Correct
    Wrong
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Answer : 3. "1950"
Explanation :

Answer: C) 1950 Explanation: The Supreme Court of India was established in the year 1950.

Q: A house owner wants to get his house painted. He is told that this would require 45 kg of paint allowing 6% wasting. And if the paint is available in 4 kg tins only, the number of tins required for painting the house is ? 2017 0

  • 1
    12
    Correct
    Wrong
  • 2
    13
    Correct
    Wrong
  • 3
    11
    Correct
    Wrong
  • 4
    10
    Correct
    Wrong
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Answer : 1. "12"
Explanation :

Answer: A) 12 Explanation: Given 45 kg for painting  And 6% 0f 45 for wasting => 6x45/100 = 2.7 kg Now total paint required = 45+2.7 = 47.7 kgs But tins are available in only 4kgs Then, no. of tins req = 47.7/4 = 11.4 => 12 tins

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