General Science Practice Question and Answer

Q:

Which of the following is usually not an air - pollutant? 

1531 0

  • 1
    Carbon dioxide
    Correct
    Wrong
  • 2
    Nitrous oxide
    Correct
    Wrong
  • 3
    Hydrocarbons
    Correct
    Wrong
  • 4
    Sulphur Dioxide
    Correct
    Wrong
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Answer : 2. "Nitrous oxide "

Q:

Pyramid of energy 

1519 0

  • 1
    is always upright.
    Correct
    Wrong
  • 2
    is inverted only for sea ecosystem.
    Correct
    Wrong
  • 3
    is always inverted.
    Correct
    Wrong
  • 4
    can be both inverted or upright.
    Correct
    Wrong
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Answer : 1. "is always upright. "

Q:

How much carbon does steel contain? 

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  • 1
    0.1% – 1.5%
    Correct
    Wrong
  • 2
    7 – 10%
    Correct
    Wrong
  • 3
    10 – 50%
    Correct
    Wrong
  • 4
    Zero
    Correct
    Wrong
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Answer : 1. "0.1% – 1.5%"

Q: Which best describes genetic mutations? 1508 0

  • 1
    Genetic mutations that cause diseases are always passed on to offspring.
    Correct
    Wrong
  • 2
    Some inherited genetic mutations can be good for the offspring.
    Correct
    Wrong
  • 3
    Different genetic mutations cause few forms of cancer.
    Correct
    Wrong
  • 4
    Somatic mutations can be inherited from parents or acquired during life.
    Correct
    Wrong
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Answer : 2. "Some inherited genetic mutations can be good for the offspring."
Explanation :

Answer: B) Some inherited genetic mutations can be good for the offspring. Explanation: Mutations are accidents in the copying of DNA. A genetic mutation is a random change in the DNA that is passed on further generations of cells and or organisms.    Genetic mutations are accidental changes in the DNA in the germ cells or early in the formation of the embryo. These changes if they are in the germ cell will be passed on to other organisms formed by sexual reproduction or asexual reproduction. An example would be the golden delicious apple. A lost of genetic information due to a mutation resulted in a different color of fruit.   Genetic mutations that cause diseases are not always passed on to offspring.

Q:

Which mission of NASA brought the first human to moon?

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  • 1
    Apollo program
    Correct
    Wrong
  • 2
    Gemini Program
    Correct
    Wrong
  • 3
    Mercury Program
    Correct
    Wrong
  • 4
    None of the above
    Correct
    Wrong
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Answer : 1. "Apollo program"

Q:

What is the study of population called?

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  • 1
    Map art
    Correct
    Wrong
  • 2
    Human science
    Correct
    Wrong
  • 3
    Demography
    Correct
    Wrong
  • 4
    Biography
    Correct
    Wrong
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Answer : 3. "Demography"

Q:

The hydrogen burning process is directly associated with:

1504 0

  • 1
    Oxidation
    Correct
    Wrong
  • 2
    Hydrogenation
    Correct
    Wrong
  • 3
    Hydrolysis
    Correct
    Wrong
  • 4
    Reduction
    Correct
    Wrong
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Answer : 1. "Oxidation"

Q:

The fibre of the electric bulb is formed. 

1504 0

  • 1
    From copper
    Correct
    Wrong
  • 2
    Aluminium
    Correct
    Wrong
  • 3
    From lead
    Correct
    Wrong
  • 4
    From Tungston
    Correct
    Wrong
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Answer : 4. "From Tungston "

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