Basic Science Practice Question and Answer

Q:

Embryos of Tritium aestivum have a chromosome number?

1871 0

  • 1
    44
    Correct
    Wrong
  • 2
    63
    Correct
    Wrong
  • 3
    65
    Correct
    Wrong
  • 4
    67
    Correct
    Wrong
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Answer : 2. "63"

Q:

The pigment that gives color to human skin is-

1871 0

  • 1
    Lysozyme
    Correct
    Wrong
  • 2
    Epidermis
    Correct
    Wrong
  • 3
    Melanin
    Correct
    Wrong
  • 4
    Calanin
    Correct
    Wrong
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Answer : 3. "Melanin "

Q:

What is the coupling of primary and secondary coils in a transformer?

1861 0

  • 1
    Electrical
    Correct
    Wrong
  • 2
    Mechanical
    Correct
    Wrong
  • 3
    Magnetic
    Correct
    Wrong
  • 4
    All these
    Correct
    Wrong
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Answer : 3. "Magnetic"
Explanation :

The secondary coil is also generating a magnetic field that is growing and shrinking just like the field in the primary coil. This coupling of magnetic energy between these two coils is called mutual induction.

Q:

From which source is the list of countries emitting carbon dioxide based on carbon dioxide emissions?

1859 0

  • 1
    Burning of fossil fuels
    Correct
    Wrong
  • 2
    Cement Industry
    Correct
    Wrong
  • 3
    Both of the above
    Correct
    Wrong
  • 4
    None of these
    Correct
    Wrong
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Answer : 3. "Both of the above"
Explanation :

This is a list of sovereign states and territories by carbon dioxide emissions due to certain forms of human activity, based on the EDGAR database created by European Commission and Netherlands Environmental Assessment Agency.

Q:

Are secondary electrical devices?

1852 0

  • 1
    Depleting torques
    Correct
    Wrong
  • 2
    Containing torque
    Correct
    Wrong
  • 3
    Damping torque
    Correct
    Wrong
  • 4
    All these
    Correct
    Wrong
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Answer : 4. "All these"

Q:

Rust on iron?

1837 0

  • 1
    ferric oxide
    Correct
    Wrong
  • 2
    Hydrated ferrous and ferric oxide
    Correct
    Wrong
  • 3
    Alkali ferrous and ferric carbonate
    Correct
    Wrong
  • 4
    Because of all of the above
    Correct
    Wrong
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Answer : 4. "Because of all of the above"

Q:

Select the odd from the following.

1830 0

  • 1
    J.L .Baird — Television
    Correct
    Wrong
  • 2
    J. Parkinson — Penicillin
    Correct
    Wrong
  • 3
    James Watt — Steam Engine
    Correct
    Wrong
  • 4
    A. G. Bell — Telephone
    Correct
    Wrong
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Answer : 3. "James Watt — Steam Engine "

Q:

Which of the following was the first B vitamin discovered in 1897?

1823 0

  • 1
    Folate 
    Correct
    Wrong
  • 2
    Biotin 
    Correct
    Wrong
  • 3
    Riboflavin 
    Correct
    Wrong
  • 4
    Thiamine
    Correct
    Wrong
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Answer : 4. "Thiamine"
Explanation :

1. The first vitamin discovered in 1897 was thiamine, also known as vitamin B1.

2. Thiamine was discovered by Dutch physician Christiaan Eijkman.

3. Vitamin B1 helps body cells convert carbohydrates into energy and maintain proper functioning of the heart, muscles and digestive system.

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