IIT JEE Practice Question and Answer

Q: Which of these was an action of Farmers Alliances? 2031 0

  • 1
    Involving farmers in political action
    Correct
    Wrong
  • 2
    Encouraging farmers to give up farming
    Correct
    Wrong
  • 3
    Helping farmers fight for better prices
    Correct
    Wrong
  • 4
    Both A & C
    Correct
    Wrong
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Answer : 4. "Both A & C"
Explanation :

Answer: D) Both A & C Explanation: The Farmers Alliance was an organized agrarian economic movement among American farmers that developed and flourished in 1875.   One of the goals of the organization was to end the adverse effects of the crop-lien system on farmers in the period following the American Civil War.   The Farmer's Alliance moved into politics in the early 1890s under the banner of the People's Party, commonly known as the "Populists."

Q: The marked price of an article is increased by 25% and the selling price is increased by 16.66%, then the amount of profit doubles. If the original marked price be Rs. 400 which is greater than the corresponding cost price by 33.33%, what is the increased selling price? 4475 0

  • 1
    Rs. 380
    Correct
    Wrong
  • 2
    Rs. 420
    Correct
    Wrong
  • 3
    Rs. 460
    Correct
    Wrong
  • 4
    Rs. 440
    Correct
    Wrong
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Answer : 2. "Rs. 420"
Explanation :

Answer: B) Rs. 420 Explanation: As given in the question, Marked price is 25% more than the Cost price. => C.P of the article = 34 x 400 = 300  Now,  Let the original S.P of the article be Rs. P Now the new S.P = P + 16.666 +13.333300 x P  => S.P = 7P6 According to the question, 7P6 - 300 = 2P - 300 => 5P = 1800 => P = Rs. 360 Hence, the increased S.P = 360 x 7/6 = Rs. 420.

Q: Sneha’s weight is 140% of Veena’s weight. Rina’s weight is 90% of Sana’s weight. Sana weighs twice as much as Veena. If Sneha’s weight is x% of Rina’s weight, then x is equal to: 1817 0

  • 1
    596/9
    Correct
    Wrong
  • 2
    605/9
    Correct
    Wrong
  • 3
    645/9
    Correct
    Wrong
  • 4
    700/9
    Correct
    Wrong
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Answer : 4. "700/9"
Explanation :

Answer: D) 700/9 Explanation: Let Veena's weight = 1 kg Sana's weight = 2 kg Sneha's weight = 1.4 kg Rina's weight = 1.8 kg Now,according to the given data in the question, 1.8x100 = 1.4   x = 1.4 × 1001.8 = 7009 = 77 79.

Q: What molecule carries genetic information? 1513 0

  • 1
    RNA
    Correct
    Wrong
  • 2
    DNA
    Correct
    Wrong
  • 3
    Proteins
    Correct
    Wrong
  • 4
    Nucleotides
    Correct
    Wrong
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Answer : 2. "DNA"
Explanation :

Answer: B) DNA Explanation: The nucleus of a cell contains chromosomes, which carry genetic information in a long molecule called DNA. Genes are regions of DNA that carry the code to control a particular cell activity or the production of a particular protein.

Q: Iodine test is used to detect 4930 0

  • 1
    Carbohydrate
    Correct
    Wrong
  • 2
    Fat
    Correct
    Wrong
  • 3
    Protein
    Correct
    Wrong
  • 4
    Cholesterol
    Correct
    Wrong
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Answer : 1. "Carbohydrate"
Explanation :

Answer: A) Carbohydrate Explanation: The iodine test is used to test for the presence of starch i.e, Carbohydrate.

Q: Which best describes an element? 1678 0

  • 1
    An element is composed of identical atoms
    Correct
    Wrong
  • 2
    A pure substance
    Correct
    Wrong
  • 3
    a material that has consistent chemical properties
    Correct
    Wrong
  • 4
    Both A & B
    Correct
    Wrong
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Answer : 4. "Both A & B"
Explanation :

Answer: D) Both A & B Explanation: An Element is a pure substance of one type of atom. In chemistry, any material such as carbon, hydrogen, iron, or oxygen that cannot be broken down into more fundamental substances is nothing but an element.

Q: Digitized information can be used by computers. 1664 0

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

Answer: A) TRUE Explanation: TRUE. The computers and electronic devices use digitized information which is easily understood by them.   Digitization is the process of converting analog signals or information of any form into a digital format that can be understood by computer systems or electronic devices. The term is used when converting information, like text, images or voices, and sounds, into binary code.

Q: Why does homeric literature still survive today? 2058 0

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Answer :
Explanation :

Homer's literature had created the foundation for literature and was influential in his time and the future. And they are credited as foundational components of the Western worldview.

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