IIT JEE Practice Question and Answer

Q: Plants that grow in Saline Water are called 2123 1

  • 1
    Sciophytes
    Correct
    Wrong
  • 2
    Bryophytes
    Correct
    Wrong
  • 3
    Halophytes
    Correct
    Wrong
  • 4
    Hydrophytes
    Correct
    Wrong
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Answer : 3. "Halophytes"
Explanation :

Answer: C) Halophytes Explanation: Plants that grow in Saline Water are called Halophytes.

Q: Which one of the following launched world's longest scheduled flight ? 2118 0

  • 1
    Qatar Airways
    Correct
    Wrong
  • 2
    British Airways
    Correct
    Wrong
  • 3
    Jet Blue
    Correct
    Wrong
  • 4
    Air India
    Correct
    Wrong
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Answer : 1. "Qatar Airways"
Explanation :

Answer: A) Qatar Airways Explanation: The Qatar Airways has launched the World’s longest scheduled commercial service to ply between Doha to Auckland. The inaugural service of Flight QR920 took off on February 5, 2017 from Doha and will take 16 hours and 20 minutes to travel 14,535 kilometers to reach Auckland in New Zealand.This makes Qatar Airways to launch the World’s fastest and longest passenger service in terms of flying time. Prior to this, emirates launched the world’s longest non-stop scheduled commercial flight with a service from Dubai to Auckland, spanning 14,200 kilometres.

Q: If x = √8 - √7, y = √6 - √5 and z = √10 - 3, which of the following is true  ? 2118 0

  • 1
    x > y < z
    Correct
    Wrong
  • 2
    x < y < z
    Correct
    Wrong
  • 3
    x > y > z
    Correct
    Wrong
  • 4
    z < x < y
    Correct
    Wrong
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Answer : 4. "z < x < y"
Explanation :

Answer: D) z < x < y Explanation: x = √8 - √7 = 1/(√8 + √7) and y = √6 - √5 = 1/(√6 + √5) and z = √10 - 3 = 1/(√10 + 3) As (√8 + √7) > (√6 + √5), (√8 - √7) < (√6 - √5) As (√10 + 3) > (√8 + √7) > (√6 + √5) z < x < y.

Q: Which city is known as "Queen of Arabian Sea"  ? 2118 0

  • 1
    Vizag
    Correct
    Wrong
  • 2
    Kakinada
    Correct
    Wrong
  • 3
    Mumbai
    Correct
    Wrong
  • 4
    Kochi
    Correct
    Wrong
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Answer : 4. "Kochi"
Explanation :

Answer: D) Kochi Explanation:

Q: Find the missing number in the given number series? 5 11 21 44 ? 175 2118 0

  • 1
    86
    Correct
    Wrong
  • 2
    78
    Correct
    Wrong
  • 3
    94
    Correct
    Wrong
  • 4
    102
    Correct
    Wrong
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Answer : 1. "86"
Explanation :

Answer: A) 86 Explanation: Here the given number series is 5  11  21  44  ?  175   Now the given series follows a pattern, that   x2 + 1, x2 - 1, x2 + 2, x2 - 2, x2 + 3, x2 - 3,...   Then the missing number is x2 - 2   = 44 x 2 - 2 = 88 - 2 = 86   Hence, the missing number in the number series is 86.

Q: Selling an article at a profit of 20%, Aman gets Rs. 400 more than selling at a loss of 20%. The cost price of the article is ? 2117 0

  • 1
    Rs.1000
    Correct
    Wrong
  • 2
    Rs. 1020
    Correct
    Wrong
  • 3
    Rs.1210
    Correct
    Wrong
  • 4
    Rs.1140
    Correct
    Wrong
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Answer : 1. "Rs.1000"
Explanation :

Answer: A) Rs.1000 Explanation: Cost price of the article is given by = 400x100/(20+20) = Rs.1000

Q: One important result of the French Revolution was that 2117 0

  • 1
    France lost its spirit of nationalism
    Correct
    Wrong
  • 2
    Political power shifted to the bourgeoisie
    Correct
    Wrong
  • 3
    France enjoyed a lengthy period of peace and prosperity
    Correct
    Wrong
  • 4
    The church was restored to its former role and power in the French government
    Correct
    Wrong
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Answer : 2. "Political power shifted to the bourgeoisie"
Explanation :

Answer: B) Political power shifted to the bourgeoisie Explanation: One of the most important result of the French Revolution was that Political power shifted to the bourgeoisie (Middle class people).   The Great French Revolution of 1789 not only overthrew the monarchy in France, but ultimately led to the destruction of the Old Order across Europe.    Prior to the French Revolution, the bourgeoisie or middle class, belonged to the Third Estate, which had the largest tax burden and virtually no rights.   The bourgeoisie gained an enormous amount of political power when the National Assembly issued the Declaration of the Rights of Man, and drafted a new constitution for France.

Q: The least number of four digits which is divisible by 4, 6, 8 and 10 is ? 2116 0

  • 1
    1107
    Correct
    Wrong
  • 2
    1080
    Correct
    Wrong
  • 3
    1100
    Correct
    Wrong
  • 4
    1208
    Correct
    Wrong
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Answer : 2. "1080"
Explanation :

Answer: B) 1080 Explanation: LCM of 4, 6, 8 and 10 = 120120) 1000 (8 960 ------ 40 The least number of four digits which is divisible by 4, 6, 8 and 10 => 1000 + 120 - 40 = 1080.

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