Basic Science Practice Question and Answer

Q:

Write the name, which of the following is not a Kharif crop?

281 0

  • 1
    Tide
    Correct
    Wrong
  • 2
    Paddy
    Correct
    Wrong
  • 3
    Maize
    Correct
    Wrong
  • 4
    Gram
    Correct
    Wrong
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Answer : 4. "Gram"
Explanation :

Kharif crops – The crops sown in June-July in the Indian subcontinent are called Kharif crops. These crops are harvested in October and November. These require high temperature and humidity at the time of sowing and dry environment at the time of ripening.

Main Kharif crops – Cotton, groundnut, paddy, millet, maize, sweet potato, urad, moong, moth cowpea (Chanwala), jowar, arhar, dhaincha, sugarcane, soybean, okra, sesame, guar, jute, flax etc.

Q:

When is the Kharif crop harvested?

308 0

  • 1
    March
    Correct
    Wrong
  • 2
    June
    Correct
    Wrong
  • 3
    November
    Correct
    Wrong
  • 4
    December
    Correct
    Wrong
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Answer : 3. "November"
Explanation :

Kharif crops – The crops sown in June-July in the Indian subcontinent are called Kharif crops. These crops are harvested in October and November. These require high temperature and humidity at the time of sowing and dry environment at the time of ripening.

Main Kharif crops – Cotton, groundnut, paddy, millet, maize, sweet potato, urad, moong, moth cowpea (Chanwala), jowar, arhar, dhaincha, sugarcane, soybean, okra, sesame, guar, jute, flax etc.

Q:

Which of the gas is not known as green house gas?

1677 0

  • 1
    Methane
    Correct
    Wrong
  • 2
    Hydrogen
    Correct
    Wrong
  • 3
    Nitrous oxide
    Correct
    Wrong
  • 4
    Carbon dioxide
    Correct
    Wrong
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Answer : 2. "Hydrogen"
Explanation :

Whereas oxygen, nitrogen, and argon are not examples of greenhouse gases.


Q:

Which of the following acids are formed during the formation of curd from milk?

657 0

  • 1
    Acetic acid
    Correct
    Wrong
  • 2
    Ascorbic acid
    Correct
    Wrong
  • 3
    Citric acid
    Correct
    Wrong
  • 4
    Lactic acid
    Correct
    Wrong
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Answer : 4. "Lactic acid"
Explanation :

As an end product, lactic acid is produced which makes the milk thicker and finally converts it into curd.

Q:

Iron is obtained by which of the following minerals?

790 0

  • 1
    Limestone
    Correct
    Wrong
  • 2
    Pitch Bland
    Correct
    Wrong
  • 3
    Monozite sand
    Correct
    Wrong
  • 4
    Hematite
    Correct
    Wrong
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Answer : 4. "Hematite"
Explanation :

The iron minerals that are at present used as ores are hematite, magnetitelimonite, and siderite.

Q:

Which of the following is not a natural polymer?

1197 0

  • 1
    Wool
    Correct
    Wrong
  • 2
    Leather
    Correct
    Wrong
  • 3
    Nylon
    Correct
    Wrong
  • 4
    Silk
    Correct
    Wrong
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Answer : 3. "Nylon"
Explanation :

The correct answer is the Glyptal. The term "natural polymers" refers to compounds that are produced naturally. Glyptal is a synthetic polymer and does not exist in nature. The polymer substance formed from glycerol and phthalic acid is known commercially as glyptal.

Q:

The first Indian Satellite Aryabhatta was launched in

1662 0

  • 1
    1974
    Correct
    Wrong
  • 2
    1975
    Correct
    Wrong
  • 3
    1976
    Correct
    Wrong
  • 4
    1977
    Correct
    Wrong
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Answer : 2. "1975"
Explanation :

The Aryabhata spacecraft, named after the famous Indian astronomer, was India's first satellite; it was completely designed and fabricated in India and launched by a Soviet Kosmos-3M rocket from Kapustin Yar on April 19, 1975.

Q:

Which of the following metals is used in accumulator batteries?

2930 1

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

Thus, a metal used in storage batteries is Lead.

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