IIT JEE Practice Question and Answer

Q: Which of these is not related to the great depression? 1616 0

  • 1
    Drop in profits
    Correct
    Wrong
  • 2
    Drop in income
    Correct
    Wrong
  • 3
    Drop in tax revunes
    Correct
    Wrong
  • 4
    Drop in health
    Correct
    Wrong
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Answer : 4. "Drop in health"
Explanation :

Answer: D) Drop in health Explanation: The Great Depression was a severe worldwide economic depression that took place mostly during the 1930s, beginning in the U.S. The timing of the Great Depression varied across nations; in most countries it started in 1929 and lasted until the late-1930s. It was the longest, deepest, and most widespread depression of the 20th century. In the 21st century, the Great Depression is commonly used as an example of how far the world's economy can decline.

Q: The compound interest on a certain sum for 2 years at 10% per annum is Rs. 1155. The simple interest on the same sum for double the time at half the rate percent per annum is ? 1616 1

  • 1
    Rs. 1100
    Correct
    Wrong
  • 2
    Rs. 5500
    Correct
    Wrong
  • 3
    Rs. 1400
    Correct
    Wrong
  • 4
    Rs. 4120
    Correct
    Wrong
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Answer : 1. "Rs. 1100"
Explanation :

Answer: A) Rs. 1100 Explanation: Let the sum be Rs.x. Then,     x1+101002-x=1155   ⇒x11102-1=1155   => x =5500   sum = Rs. 5500.   So, S.I = Rs. 5500×5×4100 = 1100

Q: Which is the oldest tennis tournament in the world and also prestigious? 1616 0

  • 1
    Wimbledon
    Correct
    Wrong
  • 2
    US Open
    Correct
    Wrong
  • 3
    French Open
    Correct
    Wrong
  • 4
    Australian Open
    Correct
    Wrong
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Answer : 1. "Wimbledon"
Explanation :

Answer: A) Wimbledon Explanation: Wimbledon Tournament in the city London, is the prestigious and the oldest tournament in the world.

Q: Is steel a compound? 1616 0

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

Answer: B) FALSE Explanation: Steel is not a compound or element. Steel is an alloy of iron and carbon and other elements and hence it is a mixture. Because of its high tensile strength and low cost, it is a major component used in buildings, infrastructure, tools, ships, automobiles, machines, appliances, and weapons.

Q: Indian-American girl won 2017 Young Scientist Challenge for water contamination detection device. What is her name ? 1616 0

  • 1
    Kavita Kumari
    Correct
    Wrong
  • 2
    Gitanjali Rao
    Correct
    Wrong
  • 3
    Hetal Rao
    Correct
    Wrong
  • 4
    Savita Sharma
    Correct
    Wrong
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Answer : 2. "Gitanjali Rao"
Explanation :

Answer: B) Gitanjali Rao Explanation: Gitanjali Rao, an 11-year-old Indian-American schoolgirl, was named as "America’s top young scientist" for inventing a cost-effective, quick lead-contamination detector in water. The seventh-grade student was inspired by the large-scale lead contamination in water in Flint, Michigan, that came to light recently.

Q: Change Active Voice to Passive Voice? Active voice : Has he completed the work? 1615 0

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Answer :
Explanation :

Passive Voice : Has the work been completed by him?   Rules in changing from Active voice to Passive voice : 1. Identify the subject, the verb and the object: S+V+O 2. Change the object into subject 3. Put the suitable helping verb or auxiliary verb 4. Change the verb into past participle of the verb 5. Add the preposition "by" 6. Change the subject into object.

Q: Quality of transmission depends upon 1615 0

  • 1
    Nature of signal only
    Correct
    Wrong
  • 2
    Nature of medium only
    Correct
    Wrong
  • 3
    Both (A) and (B)
    Correct
    Wrong
  • 4
    A) and (B) D)
    Correct
    Wrong
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Answer : 3. "Both (A) and (B)"
Explanation :

Answer: C) Both (A) and (B) Explanation: Quality of transmission is governed both by nature of signal and nature of communication channel/medium.

Q: Where does translation take place in the cell? 1615 0

  • 1
    Nucleus
    Correct
    Wrong
  • 2
    Mitochondria
    Correct
    Wrong
  • 3
    Ribosomes
    Correct
    Wrong
  • 4
    Cytoplasm
    Correct
    Wrong
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Answer : 4. "Cytoplasm"
Explanation :

Answer: D) Cytoplasm Explanation: Translation occurs in the cytoplasm whereas transcription occurs in the nucleus.   Transcription and Translation: Terms transcription and translation in biology are generally related to the DNA and its properties. Human cells replicate. In order to do that, they have to produce the same constituents for the new cell that is to be made. The only way to do that is by producing proteins.   The proteins are produced in the process that is called protein synthesis. The first step is in the nucleus where a particular gene is being expressed so it enables all protein factors to come and to replicate that part of a chromosome. This is finished when mRNA, the same single-stranded genetic code of a particular gene, is formed. This is transcription. Right after that, the mRNA enters the cytoplasm through nuclear pores. There, it could be translated into proteins by ribosomes. This process is called translation.

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