IIT JEE प्रश्न और उत्तर का अभ्यास करें

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

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    Drop in profits
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    Drop in income
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  • 3
    Drop in tax revunes
    सही
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  • 4
    Drop in health
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उत्तर : 4. "Drop in health"
व्याख्या :

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.

प्र: 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

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    Rs. 1100
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    Rs. 5500
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  • 3
    Rs. 1400
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  • 4
    Rs. 4120
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उत्तर : 1. "Rs. 1100"
व्याख्या :

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

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

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    Wimbledon
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  • 2
    US Open
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  • 3
    French Open
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  • 4
    Australian Open
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उत्तर : 1. "Wimbledon"
व्याख्या :

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

प्र: Is steel a compound? 1616 0

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    TRUE
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  • 2
    FALSE
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उत्तर : 2. "FALSE"
व्याख्या :

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.

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

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    Kavita Kumari
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  • 2
    Gitanjali Rao
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  • 3
    Hetal Rao
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  • 4
    Savita Sharma
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उत्तर : 2. "Gitanjali Rao"
व्याख्या :

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.

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

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उत्तर :
व्याख्या :

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.

प्र: Quality of transmission depends upon 1615 0

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    Nature of signal only
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  • 2
    Nature of medium only
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  • 3
    Both (A) and (B)
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  • 4
    A) and (B) D)
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उत्तर : 3. "Both (A) and (B)"
व्याख्या :

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

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

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    Nucleus
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  • 2
    Mitochondria
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    Ribosomes
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  • 4
    Cytoplasm
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उत्तर : 4. "Cytoplasm"
व्याख्या :

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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