IIT JEE Practice Question and Answer

Q: The p wave of a normal Electrocardiogram indicates 1462 0

  • 1
    atrial depolarization
    Correct
    Wrong
  • 2
    Ventricular repolarization
    Correct
    Wrong
  • 3
    atrial repolarization
    Correct
    Wrong
  • 4
    Ventricular depolarization
    Correct
    Wrong
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Answer : 1. "atrial depolarization"
Explanation :

Answer: A) atrial depolarization Explanation: The P wave in the ECG represents atrial depolarization, which results in atrial contraction, or atrial systole. The P wave is a summation wave generated by the depolarization front as it transits the atria.

Q: "International Day for Disaster Reduction" was observed across the world on _____ ? 1462 0

  • 1
    16 October
    Correct
    Wrong
  • 2
    15 October
    Correct
    Wrong
  • 3
    14 October
    Correct
    Wrong
  • 4
    13 October
    Correct
    Wrong
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Answer : 4. "13 October"
Explanation :

Answer: D) 13 October Explanation: International Day for Disaster Reduction, held every 13 October, celebrates how people and communities around the world are reducing their exposure to disasters. The year 2017 focus is : Reducing the number of affected people by disasters by 2030.

Q: Pressure, pain, and temperature receptors in the skin are 1461 0

  • 1
    Exteroceptors
    Correct
    Wrong
  • 2
    Proprioceptors
    Correct
    Wrong
  • 3
    Interoceptors
    Correct
    Wrong
  • 4
    Mechanoreceptors
    Correct
    Wrong
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Answer : 1. "Exteroceptors"
Explanation :

Answer: A) Exteroceptors Explanation:

Q: What gas makes up most of the atmosphere? 1461 0

  • 1
    Oxygen
    Correct
    Wrong
  • 2
    Helium
    Correct
    Wrong
  • 3
    Nitrogen
    Correct
    Wrong
  • 4
    Carbondioxide
    Correct
    Wrong
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Answer : 3. "Nitrogen"
Explanation :

Answer: C) Nitrogen Explanation: Our atmosphere is made up of 78% Nitrogen, 21% Oxygen and 1% all other gases like argon, carbon dioxide, neon, and helium.   So, Nitrogen makes up the majority of our atmosphere.

Q: A duster is of dimension 5x5x7 all in cms,  is sinked into a cylindrical vessel of radius 5 cm and height 10 cm. After insertion the level of the water is inccresed by 2.14 cm. Then by what percentage the part of the duster is above the layer ? 1461 0

  • 1
    96 %
    Correct
    Wrong
  • 2
    4 %
    Correct
    Wrong
  • 3
    97 %
    Correct
    Wrong
  • 4
    3 %
    Correct
    Wrong
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Answer : 2. "4 %"
Explanation :

Answer: B) 4 % Explanation: Imension of the duster is assumed as 5x5x7 cm3 Volume of the duster below the water layer= volume of water increased= πxrxrxh = 3.14×52×2.14 ≈ 168 cm3 Total volume of the duster = 5×5×7 = 175 cm3 Percentage of the duster part below the layer = 168×100/175 = 96% Percentage of the duster part above the layer = 4%

Q: Which is called 'OFF State' in binary? 1461 0

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

Answer: D) 1 Explanation: '0' is called OFF State in Binary...

Q: Which Temple has been awarded the ‘most visited place of the world’ by 'World Book of Records' (WBR)? 1461 0

  • 1
    Vaishnodevi temple
    Correct
    Wrong
  • 2
    Golden Temple
    Correct
    Wrong
  • 3
    Meenakshi Temple
    Correct
    Wrong
  • 4
    Rawli Maharaj Temple
    Correct
    Wrong
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Answer : 2. "Golden Temple"
Explanation :

Answer: B) Golden Temple Explanation: WBR that is World Book of Records, the London based organization that focuses on maintaining and cataloging the world records has awarded the title of 'Most visited place in the World' to the famous Golden Temple. This holy Shrine has recorded quite an uplift after the successful Heritage street project carried out by the Amritsar department.  Sri Harmandir Sahib, also known as Golden Temple and the Darbar Sahib, is the holiest Gurdwara and the most important pilgrimage site of Sikhism. It is located in the city of Amritsar, Punjab, India.

Q: A,B,C,D,E,F,G and H are sitting around a circular table facing the centre but not necessarily in the same order. G sits third to the right of C. E is second to the right of G and 4th to the right of H. B is fourth to the right of C. D is not an immediate neighbour of E. A and C are immediate neighbours.  Which of the following is/are correct ? 1460 0

  • 1
    F is third to the left of B
    Correct
    Wrong
  • 2
    F is second to the right of B
    Correct
    Wrong
  • 3
    B is an immediate neighbour of D
    Correct
    Wrong
  • 4
    All of the above
    Correct
    Wrong
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Answer : 2. "F is second to the right of B"
Explanation :

Answer: B) F is second to the right of B Explanation: From the given information, the circular arrangement is Here F is second to the right of B and the remaning all are wrong.

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