IIT JEE Practice Question and Answer

Q: Which of the following elements has the lowest electronegativity 1278 0

  • 1
    Bromine
    Correct
    Wrong
  • 2
    Fluorine
    Correct
    Wrong
  • 3
    Carbon
    Correct
    Wrong
  • 4
    Lithium
    Correct
    Wrong
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Answer : 4. "Lithium"
Explanation :

Answer: D) Lithium Explanation: Electronegativity is the tendency for an atom to attract electrons. There are general trends on the periodic table which you can use to determine the relative electronegativity for different elements, but otherwise you can also look at their valence shell and effective nuclear charge to determine their relative electronegativity.   Here from the given options, Lithium has least tendency to attract electrons and thus has a lower electronegativity.

Q: Solve the Logical Puzzle ? 1278 0

  • 1
    2
    Correct
    Wrong
  • 2
    4
    Correct
    Wrong
  • 3
    8
    Correct
    Wrong
  • 4
    0
    Correct
    Wrong
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Answer : 2. "4"
Explanation :

Answer: B) 4 Explanation:

Q: Which ministry has started the exercise to revise base year to 2017 - 2018 for computation of wholesale inflation? 1277 0

  • 1
    Ministry of Commerce and Industry
    Correct
    Wrong
  • 2
    Ministry of Finance
    Correct
    Wrong
  • 3
    Ministry of Corporate Affairs
    Correct
    Wrong
  • 4
    All the above
    Correct
    Wrong
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Answer : 1. "Ministry of Commerce and Industry"
Explanation :

Answer: A) Ministry of Commerce and Industry Explanation: The India's commerce and industry ministry has started the exercise to revise base year to 2017-18 for computation of wholesale inflation with a view to present more realistic picture of the price situation   In May last year, the government revised the base year for WPI-based inflation to 2011-12 to give a better indication of changes in prices of commodities.   The new index, with 2017-18, is expected to have new items, which would provide a more realistic picture of price rise and its impact on people.   Most of the additions could be in the manufactured products category. Currently, the index has a total of 697 items, including primary articles, fuel and power and manufactured products.

Q: A sequence of natural number 2,3,5,6,10. Such that no square and no cube occurs in the term. Find the 300th term of sequence ? 1277 0

  • 1
    322
    Correct
    Wrong
  • 2
    319
    Correct
    Wrong
  • 3
    321
    Correct
    Wrong
  • 4
    320
    Correct
    Wrong
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Answer : 4. "320"
Explanation :

Answer: D) 320 Explanation: 1 to 300 = 300 numbers squares btwn 1 to 300 = 1,4,9,16,25,36,49.....289 i.e, total 17cubes = 1,8,27,64,125,216 i.e, 5 now 1 and 64 are common so total numbers that should be removed ( 17+5-2= 20 )total 20 term removed so 300th term would be 320

Q: What are the end products of cellular respiration? 1277 0

  • 1
    ATP, Glucose
    Correct
    Wrong
  • 2
    Glucose, Oxygen
    Correct
    Wrong
  • 3
    Oxygen, Water
    Correct
    Wrong
  • 4
    ATP, Water
    Correct
    Wrong
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Answer : 4. "ATP, Water"
Explanation :

Answer: D) ATP, Water Explanation: Cellular respiration is the three-step process by which cells make ATP using glucose and oxygen. Oxygen and glucose are both reactants in the process of cellular respiration. The main product of cellular respiration is ATP, waste products include carbon dioxide and water.

Q: In the following question four words are given of which two words are most nearly the same or opposite in meaning. Find the two words. ( 1276 0

  • 1
    Soft    (
    Correct
    Wrong
  • 2
    Fatiguing     (
    Correct
    Wrong
  • 3
    Discordant     (
    Correct
    Wrong
  • 4
    Force
    Correct
    Wrong
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Answer : 2. "Fatiguing     ("
Explanation :

Answer: B) A-C Explanation: Meaning of Discordant = Harsh That implies Harsh opposite is soft.

Q: A number is 2 more than thrice the second number and 4 times the smaller number is 5 more than the greater number. What is greater number  ? 1276 0

  • 1
    7
    Correct
    Wrong
  • 2
    23
    Correct
    Wrong
  • 3
    9
    Correct
    Wrong
  • 4
    21
    Correct
    Wrong
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Answer : 2. "23"
Explanation :

Answer: B) 23 Explanation: Let the greater and smaller number be p and q respectively. 4q = p + 5 ------ (I) p = 3q+2 ------- (II) From equation (I) and (II) q = 7 p = 23

Q: How many words can be formed with or without meaning by using three letters out of k, l, m, n, o without repetition of alphabets. 1276 0

  • 1
    60
    Correct
    Wrong
  • 2
    120
    Correct
    Wrong
  • 3
    240
    Correct
    Wrong
  • 4
    30
    Correct
    Wrong
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Answer : 1. "60"
Explanation :

Answer: A) 60 Explanation: Given letters are k, l, m, n, o = 5 number of letters to be in the words = 3 Total number of words that can be formed from these 5 letters taken 3 at a time without repetation of letters = 5P3 ways. ⇒ 5P3 = 5 x 4 x 3 = 60 words.

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