IIT JEE Practice Question and Answer

Q: What comes down but never goes up? 2959 0

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Answer :
Explanation :

Rain is what only comes down but never goes up.

Q: Find the next number in the given number series? 96, 95, 87, 78, ? 2956 0

  • 1
    64
    Correct
    Wrong
  • 2
    57
    Correct
    Wrong
  • 3
    29
    Correct
    Wrong
  • 4
    14
    Correct
    Wrong
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Answer : 4. "14"
Explanation :

Answer: D) 14 Explanation: The given number series is 96, 95, 87, 78, ?  It follows a pattern that, 9696 - 12 = 9595 - 23 = 95 - 8 = 8787 - 32 = 87 - 9 = 7878 - 43 = 78 - 64 = 14   Hence, the next number in the given number series is 14.

Q: Which is true of loyalty boards? 2956 0

  • 1
    They did not care about individual civil rights
    Correct
    Wrong
  • 2
    They carefully reveiwed all evidence in open court
    Correct
    Wrong
  • 3
    They were careful to pertect the civil rights of government workers
    Correct
    Wrong
  • 4
    They asked for voluntary statements
    Correct
    Wrong
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Answer : 3. "They were careful to pertect the civil rights of government workers"
Explanation :

Answer: C) They were careful to pertect the civil rights of government workers Explanation:

Q: The amount of water (in ml) that should be added to reduce 9 ml lotion, containing 50% alcohol, to a lotion containing 30% alcohol is ? 2949 0

  • 1
    6 ml
    Correct
    Wrong
  • 2
    11 ml
    Correct
    Wrong
  • 3
    15 ml
    Correct
    Wrong
  • 4
    9 ml
    Correct
    Wrong
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Answer : 1. "6 ml"
Explanation :

Answer: A) 6 ml Explanation: Let us assume that the lotion has 50% alcohol and 50% water.ratio = 1:1As the total solution is 9mlalcohol = water = 4.5mlNow if we want the quantity of alcohol = 30%The quantity of water = 70%The new ratio = 3:7Let x ml of water be addedWe get,4.54.5+x = 37=> x=6Hence 6ml of water is added.

Q: Which best describes the practice of outsourcing? 2949 0

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Answer :
Explanation :

In business, outsourcing is an agreement in which one company contracts its own internal activity to different company. It involves the contracting out of a business process (e.g. payroll processing, claims processing) and operational, and/or non-core functions (e.g. manufacturing, facility management, call center support) to another party (see also business process outsourcing).   A company moves some of its jobs to another country and employing workers in other countries to save on labor costs best describes the practice of outsourcing.

Q: Select the correct statement about the pharynx. 2945 0

  • 1
    The auditory tube drains into the nasopharynx
    Correct
    Wrong
  • 2
    The laryngopharynx blends posteriorly into the nasopharynx
    Correct
    Wrong
  • 3
    The palatine tonsils are embedded in the lateral walls of the nasopharynx
    Correct
    Wrong
  • 4
    The pharyngeal tonsil is located in the laryngopharynx
    Correct
    Wrong
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Answer : 1. "The auditory tube drains into the nasopharynx"
Explanation :

Answer: A) The auditory tube drains into the nasopharynx Explanation:

Q: Which of the following equations represents Photosynthesis? 2943 0

  • 1
    6CO2 + 6H2O -----> C6H12O6 + 6O2
    Correct
    Wrong
  • 2
    C6H12O6 + 6O2 -----> CO2 + 6H2O
    Correct
    Wrong
  • 3
    CO2 + H2O -----> C6H12O6 + 6O2
    Correct
    Wrong
  • 4
    6O2 + 6H2O -----> C6H12O6 + 6CO2
    Correct
    Wrong
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Answer : 1. "6CO2 + 6H2O -----> C6H12O6 + 6O2"
Explanation :

Answer: A) 6CO2 + 6H2O -----> C6H12O6 + 6O2 Explanation: Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy that can later be released to fuel the organisms activities.   Photosynthesis can be represented using a chemical equation.   The overall balanced equation is                 6CO2 +  6H2O   →Sunlight    C6H12O6   +   6O2Source of Carbon & Oxygen  + Source of Electrons & Hydrogen + Energy that drives Photosynthesis             ----> Sugar + Gas produced by splitting water.   Where  CO2 = carbon dioxide  H2O = waterC6H12O6 = glucose  O2 = oxygen.

Q: Which 'Water Body' separates Andaman and Nicobar Islands ? 2942 0

  • 1
    Eleventh Degree Channel
    Correct
    Wrong
  • 2
    Andaman Sea
    Correct
    Wrong
  • 3
    Bay of Bengal
    Correct
    Wrong
  • 4
    Ten Degree Channel
    Correct
    Wrong
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Answer : 4. "Ten Degree Channel"
Explanation :

Answer: D) Ten Degree Channel Explanation:

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