Basic Science Practice Question and Answer

Q:

The maximum limit in decibels of sound intensity above which a person cannot hear—

2379 0

  • 1
    50 db
    Correct
    Wrong
  • 2
    70 db
    Correct
    Wrong
  • 3
    85 db
    Correct
    Wrong
  • 4
    95 db
    Correct
    Wrong
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Answer : 4. "95 db"

Q:

What substance dissolves in Tears?

2359 0

  • 1
    Common salt
    Correct
    Wrong
  • 2
    sea
    Correct
    Wrong
  • 3
    strach
    Correct
    Wrong
  • 4
    Glucose
    Correct
    Wrong
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Answer : 1. "Common salt"

Q:

______ is used in yellow lamp street lights.

2307 0

  • 1
    Neon
    Correct
    Wrong
  • 2
    Nitrogen
    Correct
    Wrong
  • 3
    Phosphorous
    Correct
    Wrong
  • 4
    Sodium
    Correct
    Wrong
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Answer : 4. "Sodium"

Q:

Which of the following metals is used in accumulator batteries?

2231 1

  • 1
    Copper
    Correct
    Wrong
  • 2
    Lead
    Correct
    Wrong
  • 3
    Aluminum
    Correct
    Wrong
  • 4
    Zinc
    Correct
    Wrong
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Answer : 2. "Lead"

Q:

Which one of the following organisms has a role in converting nitrates to free nitrogen?

2184 0

  • 1
    Pseudomonas
    Correct
    Wrong
  • 2
    Nitrosomonas
    Correct
    Wrong
  • 3
    Nitrobacter
    Correct
    Wrong
  • 4
    Rhizobium
    Correct
    Wrong
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Answer : 4. "Rhizobium"

Q:

Octopus belongs to the phylum

2045 0

  • 1
    Echinodermata
    Correct
    Wrong
  • 2
    Nideria
    Correct
    Wrong
  • 3
    Mollusca
    Correct
    Wrong
  • 4
    Chordata
    Correct
    Wrong
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Answer : 3. "Mollusca "

Q:

The sweet taste of fruits is due to-

1932 0

  • 1
    Ribose
    Correct
    Wrong
  • 2
    Lactose
    Correct
    Wrong
  • 3
    Fructose
    Correct
    Wrong
  • 4
    Maltose
    Correct
    Wrong
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Answer : 3. "Fructose"

Q:

Whose register is the montrix record?

1910 0

  • 1
    Dangerous foreign species
    Correct
    Wrong
  • 2
    endangered wild species
    Correct
    Wrong
  • 3
    Aquatic places at risk under anthropogenic activities
    Correct
    Wrong
  • 4
    None of these
    Correct
    Wrong
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Answer : 3. "Aquatic places at risk under anthropogenic activities"

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