IIT JEE Practice Question and Answer

Q: "The Law of Kepler" is related with which among the following ? 1294 0

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    Planetary Motion
    Correct
    Wrong
  • 2
    Law of Conservation of energy
    Correct
    Wrong
  • 3
    Law of Gravitation
    Correct
    Wrong
  • 4
    None
    Correct
    Wrong
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Answer : 1. "Planetary Motion"
Explanation :

Answer: A) Planetary Motion Explanation: Kepler's laws of planetary motion are three scientific laws describing the motion of planets around the Sun. Kepler’s three laws of planetary motion can be stated as follows: (1) All planets move about the Sun in elliptical orbits, having the Sun as one of the foci. (2) A radius vector joining any planet to the Sun sweeps out equal areas in equal lengths of time. (3) The squares of the sidereal periods (of revolution) of the planets are directly proportional to the cubes of their mean distances from the Sun.

Q: Which results from an increase in the greenhouse effect? 1292 0

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    Ocean acidification
    Correct
    Wrong
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    Smog pollution
    Correct
    Wrong
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    Ozone depletion
    Correct
    Wrong
  • 4
    All the above
    Correct
    Wrong
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Answer : 4. "All the above"
Explanation :

Answer: D) All the above Explanation: A greenhouse gas (GHG) is any gas in the atmosphere that absorbs and emits radiation in the thermal infrared range.   The increase in average global temperatures that results from an enhanced greenhouse effect. Effects of increased greenhouse gas emissions: Increases in the different greenhouse gases have other effects apart from global warming including ocean acidification, smog pollution, ozone depletion as well as changes to plant growth and nutrition levels.

Q: In which city 2017 Global Entrepreneurship Summit will be held ? 1290 0

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    New Delhi
    Correct
    Wrong
  • 2
    Hyderabad
    Correct
    Wrong
  • 3
    Bangaluru
    Correct
    Wrong
  • 4
    Mumbai
    Correct
    Wrong
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Answer : 2. "Hyderabad"
Explanation :

Answer: B) Hyderabad Explanation: Government of India and the United States met today at NITI Aayog to plan the 2017 Global Entrepreneurship Summit, which will be held November 28-30 at the Hyderabad International Convention Centre in Hyderabad, India. The Summit will be inaugurated by Prime Minister Narendra Modi and Advisor to the President, Ivanka Trump, who leads the U.S. delegation.

Q: Yisrael Kristal, who died recently was certified by Guinness World Records as the _________. 1287 0

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    World's Tallest Man
    Correct
    Wrong
  • 2
    World's Oldest Man
    Correct
    Wrong
  • 3
    World's Youngest Man
    Correct
    Wrong
  • 4
    World's Smallest Man
    Correct
    Wrong
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Answer : 2. "World's Oldest Man"
Explanation :

Answer: B) World's Oldest Man Explanation:

Q: For intra-State movement, the e-way bill by GST council will be rolled out in a phased manner beginning April 15 and will cover all the States by 1287 0

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    May 1
    Correct
    Wrong
  • 2
    June 1
    Correct
    Wrong
  • 3
    May 31
    Correct
    Wrong
  • 4
    July 31
    Correct
    Wrong
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Answer : 1. "May 1"
Explanation :

Answer: A) May 1 Explanation: For intra-State movement, the e-way bill will be rolled out in a phased manner beginning April 15 and will cover all the States by June 1. Businesses will continue to file summary sales return GSTR-3B until June as the GST (Goods and Services Tax) Council has extended the present system of return-filing by three months. Electronic way or e-way bill for movement of goods between States would be implemented from April 1.

Q: 19 friends went to a restaurant for a combined weekend dinner party. 13 of them spent Rs. 79 each on their dinner and the rest spent Rs. 4 more than the average expenditure of all the 19. What was the total money spent by them? 1284 0

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    Rs. 1398.96
    Correct
    Wrong
  • 2
    Rs. 1457.09
    Correct
    Wrong
  • 3
    Rs. 1662.35
    Correct
    Wrong
  • 4
    Rs. 1536.07
    Correct
    Wrong
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Answer : 4. "Rs. 1536.07"
Explanation :

Answer: D) Rs. 1536.07 Explanation: Let average expenditure was Rs. R 13 x 79 + 6x(R + 4) = 19R => R = Rs. 80.84 Total money = 19 x 80.84 = Rs. 1536.07.

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Answer :
Explanation :

Given total number of boys in the school = 1500 In that 35% are Hindu, 30% are Sikh, 15% are Muslims => 35 + 30 + 15 = 80% Remaining Boys = 100% - 80% = 20% of 1500 => 20 x 1500/100 = 300 boys are Christians.

Q: Who is the new Chairman of ISRO in 2018? 1265 0

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    K. Sivan
    Correct
    Wrong
  • 2
    S. Manish Arya
    Correct
    Wrong
  • 3
    A.S. Kiran Kumar
    Correct
    Wrong
  • 4
    Bibeth Roy
    Correct
    Wrong
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Answer : 1. "K. Sivan"
Explanation :

Answer: A) K. Sivan Explanation: Rocket specialist K. Sivan has been appointed as new Chairman of India's space agency ISRO for a three-year term. He replaces current ISRO Chairman A.S. Kiran Kumar, whose term ends January 14, 2018.   He is currently Director of Vikram Sarabhai Space Centre in Trivandrum.   His expertise gave ISRO ability to send 104 satellites in a single mission.

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