General Science Practice Question and Answer

Q:

Which is the most powerful muscle in the human body?

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  • 1
    finger
    Correct
    Wrong
  • 2
    feet
    Correct
    Wrong
  • 3
    jaw
    Correct
    Wrong
  • 4
    wrist
    Correct
    Wrong
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Answer : 3. "jaw"
Explanation :

The masseter muscle, which is one of the muscles used for chewing and is located in the jaw, is often considered one of the most powerful muscles in the human body in terms of its force and capability. However, the term "most powerful" can be interpreted in different ways, considering factors like strength, endurance, or speed. Different muscles might be considered the most powerful depending on the specific criteria used.

Q:

Which of the following metal is mainly used in mobile phone batteries?

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  • 1
    Lithium
    Correct
    Wrong
  • 2
    Copper
    Correct
    Wrong
  • 3
    Copper
    Correct
    Wrong
  • 4
    Aluminium
    Correct
    Wrong
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Answer : 1. "Lithium"

Q:

Globulins of the blood plasma are responsible for-

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  • 1
    Blood clotting
    Correct
    Wrong
  • 2
    Defence mechanisms
    Correct
    Wrong
  • 3
    Oxygen transport
    Correct
    Wrong
  • 4
    Osmotic balance
    Correct
    Wrong
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Answer : 2. "Defence mechanisms"

Q:

By what metabolic process in the kitchen can you make food like curd, paneer and sauerkraut?

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  • 1
    Pasteurisation
    Correct
    Wrong
  • 2
    Fermentation
    Correct
    Wrong
  • 3
    Condensation
    Correct
    Wrong
  • 4
    Steaming
    Correct
    Wrong
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Answer : 2. "Fermentation"
Explanation :

Fermentation is a metabolic process that produces chemical changes in organic substrates through the action of enzymes. In biochemistry, it is narrowly defined as the extraction of energy from carbohydrates in the absence of oxygen.

Q:

In 1928, who discovered that when a ray of coloured light enters a liquid, a fraction of the light scattered by that liquid is of a different colour?

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  • 1
    SN Bose
    Correct
    Wrong
  • 2
    Lord Rayleigh
    Correct
    Wrong
  • 3
    CV Raman
    Correct
    Wrong
  • 4
    John Tyndall
    Correct
    Wrong
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Answer : 3. "CV Raman"
Explanation :

Sir Chandrasekhara Venkata Raman, discovered on 28 February 1928, that when a beam of coloured light entered a liquid, a fraction of the light scattered was of a different color, dependent on material property. This radiation effect of molecular scattering of light bears the name of ‘Raman Effect’, from which many applications in photonic communications and spectroscopy evolved. The Raman Effect is the process of scattering light particles by molecules of a medium.

Q:

Sun sign vitamin is-

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  • 1
    Vitamin A
    Correct
    Wrong
  • 2
    Vitamin C
    Correct
    Wrong
  • 3
    Vitamin K
    Correct
    Wrong
  • 4
    Vitamin D
    Correct
    Wrong
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Answer : 4. "Vitamin D"
Explanation :

Vitamin D is often referred to as the "sunshine vitamin" because our bodies can produce it in response to sunlight exposure. When our skin is exposed to sunlight, it synthesizes vitamin D, which is important for bone health and various other bodily functions.

Q:

What is the average life of Red blood cells in the human body?

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  • 1
    Around 120 days
    Correct
    Wrong
  • 2
    Around 270 days
    Correct
    Wrong
  • 3
    Around 300 days
    Correct
    Wrong
  • 4
    Equivalent to human’s life
    Correct
    Wrong
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Answer : 1. "Around 120 days "
Explanation :

1. The average life of red blood cells in the human body is 120 days. This is the time it takes from the formation of red blood cells until they flow in the blood. Red blood cells are made in the bone marrow and then they are shed into the blood. While flowing in the blood, red blood cells carry oxygen from the lungs to the rest of the body and carry carbon dioxide from the rest of the body to the lungs.

Q:

Petrochemicals are used in the manufacture of________.

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  • 1
    fertilizer
    Correct
    Wrong
  • 2
    biogas
    Correct
    Wrong
  • 3
    detergent
    Correct
    Wrong
  • 4
    pesticide
    Correct
    Wrong
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Answer : 3. "detergent"

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