Practice Question and Answer

Q:

किसने सुझाव दिया कि परमाणु का अधिकांश द्रव्यमान नाभिक में स्थित होता है ?

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  • 1
    चैडविक
    Correct
    Wrong
  • 2
    डाल्टन
    Correct
    Wrong
  • 3
    थॉमसन
    Correct
    Wrong
  • 4
    रदरफोर्ड
    Correct
    Wrong
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Answer : 4. "रदरफोर्ड"

Q:

Direction: In the question a sentence has been given in Active/Passive Voice. Out of the four alternatives suggested, select the one which best expressed the same sentence in Passive/Active Voice and mark your answer in the Answer Sheet.

Circumstances forced him to accept the menial job.

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  • 1
    He was being forced by the circumstances to accept the menial job.
    Correct
    Wrong
  • 2
    He was forced by circumstances to accept the menial job.
    Correct
    Wrong
  • 3
    He is forced by circumstances to accept the menial job.
    Correct
    Wrong
  • 4
    He will be forced by circumstances to accept the menial job.
    Correct
    Wrong
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Answer : 2. "He was forced by circumstances to accept the menial job."

Q: Why did settlers move to the great plains? 1621 0

  • 1
    There were minerals in the region
    Correct
    Wrong
  • 2
    Government was offering 160 acres of land for free
    Correct
    Wrong
  • 3
    Land prices in the East were getting too expensive
    Correct
    Wrong
  • 4
    All of the above
    Correct
    Wrong
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Answer : 4. "All of the above"
Explanation :

Answer: D) All of the above Explanation: Land prices in the East were getting too expensive, and the West (Great Plains) offered an opportunity for more people to own land. Although the area suffered from extreme weather and poor soils, many people decided to take the risk and venture to the Great Plains. The government was also committed to supporting those who decided to make the move.   Settlers moved to the Great Plains for several reasons. One reason was the government was offering 160 acres of land for free if the settler agreed to live on the land for five years. This was part of the Homestead Act of 1862.   Some people went to the Great Plains when they heard there were minerals in the region. Gold was one mineral found in the Great Plains region. People hoped to make a lot of money by mining gold.

Q: Which of the following atoms has the largest radius? 1621 0

  • 1
    Br
    Correct
    Wrong
  • 2
    K
    Correct
    Wrong
  • 3
    Na
    Correct
    Wrong
  • 4
    Cl
    Correct
    Wrong
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Answer : 2. "K"
Explanation :

Answer: B) K Explanation: For neutral atoms, the periodic trends in atomic size can be described like this Atomic size decreases when going from left to right across a period,Atomic size increases when going from top to bottom down a group.   Let's use these trends to try and figure out which atom would have the largest radius. If you look at elements that are located in the same group, potassium will have a larger atomic radius when compared with sodium. Likewise, bromine will have a larger atomic radius when compared with chlorine. Now focus on potassium and bromine. Since potassium is located at the start of period 3, and bromine at the end of the same period, potassium will have a larger atomic radius than bromine, and thus the largest atomic radius of the four given atoms.

Q: A disaccharide is formed by the chemical bonding of 1621 0

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    two monosaccharides
    Correct
    Wrong
  • 2
    two polysaccharides
    Correct
    Wrong
  • 3
    one monosaccharide and one polysaccharide
    Correct
    Wrong
  • 4
    All the above
    Correct
    Wrong
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Answer : 1. "two monosaccharides"
Explanation :

Answer: A) two monosaccharides Explanation: Disaccharides are formed when two monosaccharides join together by the dehydration synthesis reaction resulting in a glycosidic bond between the two monosaccharide molecules. The reaction produces water as a side product.

Q:

इनमें से विषम को खोजें: मंदिर, ईंट, महल, घर

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  • 1
    मंदिर
    Correct
    Wrong
  • 2
    ईंट
    Correct
    Wrong
  • 3
    महल
    Correct
    Wrong
  • 4
    घर
    Correct
    Wrong
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Answer : 2. "ईंट"

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