IIT JEE Practice Question and Answer

Q: Which country shares the longest border with China? 1796 0

  • 1
    India
    Correct
    Wrong
  • 2
    Russia
    Correct
    Wrong
  • 3
    Mongolia
    Correct
    Wrong
  • 4
    Kazakhstan
    Correct
    Wrong
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Answer : 3. "Mongolia"
Explanation :

Answer: C) Mongolia Explanation: China shares land borders with 14 different countries, the longest being with Mongolia followed by Russia and then India.

Q: Peacock : India :: Bear : ? 1795 0

  • 1
    England
    Correct
    Wrong
  • 2
    America
    Correct
    Wrong
  • 3
    Russia
    Correct
    Wrong
  • 4
    Africa
    Correct
    Wrong
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Answer : 3. "Russia"
Explanation :

Answer: C) Russia Explanation: Here the relation between the given words is that the first word is the National animal of the second word. As Peacock is the national bird of India, similarly Bear is the national animal of Russia.   Hence, Peacock : India :: Bear : Russia.

Q: Which property would be classified as expendable? 1794 0

  • 1
    Food given to Army
    Correct
    Wrong
  • 2
    Cement
    Correct
    Wrong
  • 3
    Paint
    Correct
    Wrong
  • 4
    All of the above
    Correct
    Wrong
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Answer : 4. "All of the above"
Explanation :

Answer: D) All of the above Explanation: Expendable properties are those properties that are consume in use or that lose their identity in use. It also include those properties that become an integral part of other property when put to use and those properties which have an expected service life of less than one year.

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Answer : 4. "B"
Explanation :

Answer: D) B Explanation: The only possible way is BCAFDEAs D & F is not in any corner and E is after C and D. C is after B and before ASo the first person to join the institute is B

Q: 12% of 70,000 is 1793 0

  • 1
    8400
    Correct
    Wrong
  • 2
    7200
    Correct
    Wrong
  • 3
    6000
    Correct
    Wrong
  • 4
    5600
    Correct
    Wrong
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Answer : 1. "8400"
Explanation :

Answer: A) 8400 Explanation: 12% of 70,000 => 12 x 70,000/100 => 8400   Hence, 12% of 70,000 = 8,400

Q: Derivative of sinx by first principle? 1793 0

  • 1
    -sinx
    Correct
    Wrong
  • 2
    -cosx
    Correct
    Wrong
  • 3
    cosx
    Correct
    Wrong
  • 4
    sinx
    Correct
    Wrong
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Answer : 3. "cosx"
Explanation :

Answer: C) cosx Explanation:   Thus, the derivative of sinx by first principle is cosx.

Q: Which Soil is Suitable for Agriculture? 1792 0

  • 1
    Alluvial Soils
    Correct
    Wrong
  • 2
    Red Soils
    Correct
    Wrong
  • 3
    Sandy Soils
    Correct
    Wrong
  • 4
    Peaty Soils
    Correct
    Wrong
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Answer : 1. "Alluvial Soils"
Explanation :

Answer: A) Alluvial Soils Explanation: 1. Each type of soil benefits different types of crops through their unique physical, chemical and biological properties.   2. Alluvial Soils are best suitable for Agriculture. This soil is a fertile soil which is rich in potassium.   3. It is best especially for crops such as paddy, sugarcane,...

Q: What is a process whereby an Ecosystem can renew itself? 1792 0

  • 1
    Succession
    Correct
    Wrong
  • 2
    Reconstruction
    Correct
    Wrong
  • 3
    Cleansing
    Correct
    Wrong
  • 4
    Purification
    Correct
    Wrong
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Answer : 1. "Succession"
Explanation :

Answer: A) Succession Explanation: The process which wherein an Ecosystem may renew itself is known as Ecological Succession. The time scale may be decades or a million of years after a mass extinction.  It may be achieve over a period of time.

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