IIT JEE Practice Question and Answer

Q: What is the capital city of Cambodia? 1751 0

  • 1
    Phnom Penh
    Correct
    Wrong
  • 2
    Hanoi
    Correct
    Wrong
  • 3
    Lamur
    Correct
    Wrong
  • 4
    Bangkok
    Correct
    Wrong
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Answer : 1. "Phnom Penh"
Explanation :

Answer: A) Phnom Penh Explanation: Cambodia Capital- Phnom Penh, Currency- Cambodian riel.

Q: Is Nitrogen an Inert gas? 1751 0

  • 1
    TRUE
    Correct
    Wrong
  • 2
    FALSE
    Correct
    Wrong
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Answer : 2. "FALSE"
Explanation :

Answer: B) FALSE Explanation: Nitrogen is found as a diatomic molecule (N2) in nature. There is a triple bond between the two nitrogen atoms.   The triple bond is pretty strong. Therefore, it needs a lot of energy to break those bonds and participate in a reaction. So nitrogen is commonly referred to as and used as an inert gas (high abundance & low cost.) However, it’s not truly inert like most noble gases. Nitrogen does react if the conditions are met. But those conditions are not exactly mild, but are not as extreme as for noble gases.   It forms nitric oxide and nitrogen dioxide with oxygen, ammonia with hydrogen, and nitrogen sulfide with sulfur.

Q: The 'P' in DPT stands for 1751 0

  • 1
    Pulmonary
    Correct
    Wrong
  • 2
    Pneumonia
    Correct
    Wrong
  • 3
    Pneumothorax
    Correct
    Wrong
  • 4
    Pertussis
    Correct
    Wrong
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Answer : 4. "Pertussis"
Explanation :

Answer: D) Pertussis Explanation: DPT refers to a class of combination vaccines against three infectious diseases in humans: diphtheria, pertussis, and tetanus.   Pertussis refers to whooping cough.

Q: Most absorption of nutrients occurs in the 1750 0

  • 1
    Stomach
    Correct
    Wrong
  • 2
    Liver
    Correct
    Wrong
  • 3
    Large intestine
    Correct
    Wrong
  • 4
    Small intestine
    Correct
    Wrong
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Answer : 4. "Small intestine"
Explanation :

Answer: D) Small intestine Explanation: The small intestine is the main area of the GI tract for absorption.   The small intestine has three separate sections. Theyare : 1. The duodenum 2. Jejunum and 3. Ileum.   Hence, the majority of nutrient absorption occurs in the duodenum and jejunum of small intestine.

Q: There are 5 consecutive odd numbers. If the difference between square of the average of first two odd number and the of the average last two odd numbers is 396, what is the smallest odd number? 1750 0

  • 1
    29
    Correct
    Wrong
  • 2
    27
    Correct
    Wrong
  • 3
    31
    Correct
    Wrong
  • 4
    33
    Correct
    Wrong
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Answer : 1. "29"
Explanation :

Answer: A) 29 Explanation: Let the five consecutive odd numbers be x-4, x-2, x, x+2, x+4 According to the question, Difference between square of the average of first two odd number and the of the average last two odd numbers is 396 i.e, x+3 and x-3 ⇒x + 32 - x - 32 = 396⇒ x2 + 9 + 6x - x2 + 6x - 9 = 396⇒ 12x = 396⇒ x = 33   Hence, the smallest odd number is 33 - 4 = 29.

Q: At what temperature do the Fahrenheit and celcius scales give the same reading? 1750 0

  • 1
    212 degrees
    Correct
    Wrong
  • 2
    32 degreees
    Correct
    Wrong
  • 3
    -40 degreees
    Correct
    Wrong
  • 4
    0 degreees
    Correct
    Wrong
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Answer : 3. "-40 degreees"
Explanation :

Answer: C) -40 degreees Explanation: We want the temperature when F=C. We know that, F = C x 95 + 32 So substituting C For F, we have C = -40o Therefore,  C = -40.  Thus when C = -40, we have C = F

Q: The Study of Universe is called 1749 0

  • 1
    Universology
    Correct
    Wrong
  • 2
    Cosmetology
    Correct
    Wrong
  • 3
    Petology
    Correct
    Wrong
  • 4
    Cosmology
    Correct
    Wrong
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Answer : 4. "Cosmology"
Explanation :

Answer: D) Cosmology Explanation: Cosmology is the scientific study of the large scale properties of the universe as a whole. It endeavors to use the scientific method to understand the origin, evolution and ultimate fate of the entire Universe. Depending on the outcome of the observations, the theories will need to be abandoned, revised or extended to accommodate the data. The prevailing theory about the origin and evolution of our Universe is the so-called Big Bang theory.

Q: Which choice best describes the polarity of BrF5? 1749 0

  • 1
    nonpolar bonds / nonpolar molecule
    Correct
    Wrong
  • 2
    nonpolar bonds / polar molecule
    Correct
    Wrong
  • 3
    polar bonds / polar molecule
    Correct
    Wrong
  • 4
    polar bonds / nonpolar molecule
    Correct
    Wrong
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Answer : 3. "polar bonds / polar molecule"
Explanation :

Answer: C) polar bonds / polar molecule Explanation:

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