General Knowledge Practice Question and Answer

Q:

Being a highly reactive element, it is not found in free state in nature.

450 0

  • 1
    iron
    Correct
    Wrong
  • 2
    sodium
    Correct
    Wrong
  • 3
    aluminum
    Correct
    Wrong
  • 4
    magnesium
    Correct
    Wrong
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Answer : 2. "sodium"
Explanation :

Sodium is a highly reactive element and is not found in its free state in nature due to its high reactivity. It readily reacts with other elements and compounds, forming various salts and minerals. Sodium is commonly found in the Earth's crust and in seawater as compounds, such as sodium chloride (table salt).


Q:

Who used the word histology for the first time?

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  • 1
    Memon
    Correct
    Wrong
  • 2
    schleiden
    Correct
    Wrong
  • 3
    robert hook
    Correct
    Wrong
  • 4
    Mayor
    Correct
    Wrong
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Answer : 4. "Mayor"
Explanation :

The term "histology" was first used by the French physician Marie François Xavier Bichat, but it was popularized and introduced into English by the Swiss anatomist Karl Wilhelm von Nägeli in the early 19th century.


Q:

The yellow color of human urine is due to what?

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  • 1
    Blood
    Correct
    Wrong
  • 2
    cholesterol
    Correct
    Wrong
  • 3
    Bile
    Correct
    Wrong
  • 4
    Urochrome
    Correct
    Wrong
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Answer : 4. "Urochrome"
Explanation :

The yellow color of human urine is primarily due to a pigment called urochrome. Urochrome is a waste product resulting from the breakdown of hemoglobin, a protein in red blood cells. The varying shades of yellow in urine can be influenced by factors such as hydration levels, diet, and certain medications, but urochrome is the main pigment responsible for the typical yellow color of urine.


Q:

What is the end product of anaerobic respiration?

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  • 1
    fumaric
    Correct
    Wrong
  • 2
    pyruvic acid
    Correct
    Wrong
  • 3
    lactic acid
    Correct
    Wrong
  • 4
    Water
    Correct
    Wrong
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Answer : 3. "lactic acid"
Explanation :

lactic acid is one of the end products of anaerobic respiration in humans and some other organisms. During anaerobic respiration, which occurs in the absence of oxygen, glucose is partially broken down to generate energy. In the absence of oxygen, cells can convert pyruvate, a product of glycolysis, into lactic acid. This process, called lactic acid fermentation, helps generate energy in the absence of oxygen but also leads to the accumulation of lactic acid, causing muscle fatigue and soreness.

Q:

Respiration takes place?

427 0

  • 1
    green cleaver
    Correct
    Wrong
  • 2
    ribosome
    Correct
    Wrong
  • 3
    in lysosomes
    Correct
    Wrong
  • 4
    microconidia
    Correct
    Wrong
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Answer : 4. "microconidia"

Q:

occurs in the human eye?

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  • 1
    concave lens
    Correct
    Wrong
  • 2
    convex mirror
    Correct
    Wrong
  • 3
    convex lens
    Correct
    Wrong
  • 4
    concave mirror
    Correct
    Wrong
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Answer : 3. "convex lens"
Explanation :

convex lenses are used in the human eye to help focus light onto the retina, allowing us to see clearly. The natural lens in the human eye is flexible and can change its shape, allowing it to adjust the focal length and focus on objects at different distances. This process is called accommodation and is essential for clear vision.

Q:

What is the action of accommodation in eye lens?

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  • 1
    by iris
    Correct
    Wrong
  • 2
    through eye lens
    Correct
    Wrong
  • 3
    by ciliary muscles
    Correct
    Wrong
  • 4
    by cornea
    Correct
    Wrong
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Answer : 3. "by ciliary muscles"
Explanation :

Accommodation in the eye lens is the process of adjusting its shape to focus on objects at different distances. This adjustment is controlled by the ciliary muscles. When focusing on nearby objects, these muscles contract, thickening the lens. For distant objects, the muscles relax, flattening the lens, ensuring clear vision at varying distances.


Q:

What type of light beam is obtained from torch?

459 0

  • 1
    parallel beam
    Correct
    Wrong
  • 2
    convergent beam
    Correct
    Wrong
  • 3
    diverging beam
    Correct
    Wrong
  • 4
    all of the above
    Correct
    Wrong
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Answer : 2. "convergent beam"
Explanation :

A torch emits a divergent light beam, where light rays spread out as they move away from the source. This spreading allows the flashlight to illuminate a wider area, making it useful for various tasks. Divergent beams are common in flashlights, ensuring efficient coverage and visibility in the dark.

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