Practice Question and Answer

Q: Rare gases are 2063 0

  • 1
    mono atomic
    Correct
    Wrong
  • 2
    di atomic
    Correct
    Wrong
  • 3
    tri atomic
    Correct
    Wrong
  • 4
    None of above
    Correct
    Wrong
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Answer : 1. "mono atomic"

Q:

Tapas works twice as fast as Mihir. If both of them together complete a work in 12 days, Tapas alone can complete it in 

2063 0

  • 1
    15 days
    Correct
    Wrong
  • 2
    18 days
    Correct
    Wrong
  • 3
    20 days
    Correct
    Wrong
  • 4
    24 days
    Correct
    Wrong
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Answer : 2. "18 days "

Q:

If all three pipes are opened for 2 minutes to fill the tank each alternatively in the sequence of A then C and then B.  Calculate water filled by pipes A is what % of water filled by pipe C?

2063 0

  • 1
    72.5 %
    Correct
    Wrong
  • 2
    75 %
    Correct
    Wrong
  • 3
    77.5 %
    Correct
    Wrong
  • 4
    80 %
    Correct
    Wrong
  • 5
    82.5 %
    Correct
    Wrong
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Answer : 2. "75 %"

Q: Why is Golden Rice pale yellow in color? 2063 0

  • 1
    Rich in Beta-Carotene
    Correct
    Wrong
  • 2
    Rich in Phycobilins
    Correct
    Wrong
  • 3
    Rich in Chlorophyll
    Correct
    Wrong
  • 4
    None
    Correct
    Wrong
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Answer : 1. "Rich in Beta-Carotene"
Explanation :

Answer: A) Rich in Beta-Carotene Explanation: Golden Rice (Oryza sativa) denotes a genetically modified rice capable of biosynthesizing and accumulating β-carotene (provitamin A) in the endosperm, yielding a characteristic yellow color in the polished grains. Golden rice was developed to help cope with vitamin A deficiency, a problem that prevails in developing countries, affecting millions (Underwood, 2000; UNICEF, 2000). Vitamin A deficiency causes mortality and growth retardation in children and frequently impairs vision, leading to blindness. It also contributes indirectly to anemia by interfering with iron bioavailability.   The endosperm of Golden Rice (Oryza sativa) is yellow due to the accumulation of β-carotene (provitamin A) and xanthophylls. The product of the two carotenoid biosynthesis transgenes used in Golden Rice results in Pale Yellow color.

Q:

Agni Neerja disease is related to?

2062 0

  • 1
    Coconut
    Correct
    Wrong
  • 2
    orange
    Correct
    Wrong
  • 3
    Apple
    Correct
    Wrong
  • 4
    Grapes
    Correct
    Wrong
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Answer : 3. "Apple"
Explanation :

Agni Neerja disease is caused by the Yellow Vein Mosaic Virus (YUMA). It is not usually sap transmissible, but it has been transmitted by grafting under experimental conditions.


Q:

In the afternoon, a student read 100 pages at the rate of 60 pages per hour. In the evening, when she was tired, she read 100 more pages at the rate of 40 pages per hour. What was her average rate of reading the pages per hour? 

2062 0

  • 1
    48
    Correct
    Wrong
  • 2
    50
    Correct
    Wrong
  • 3
    60
    Correct
    Wrong
  • 4
    70
    Correct
    Wrong
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Answer : 1. "48 "

Q:

If 21 (49) 14 and 159 (169) 146, then what is the value of 'A' in 56 (A) 44? 

2062 0

  • 1
    225
    Correct
    Wrong
  • 2
    256
    Correct
    Wrong
  • 3
    144
    Correct
    Wrong
  • 4
    121
    Correct
    Wrong
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Answer : 3. "144 "

Q:

If 4A=6B =5C; then A:B:C is

2062 0

  • 1
    20 : 15 : 24
    Correct
    Wrong
  • 2
    15 :10 :12
    Correct
    Wrong
  • 3
    15 : 20 :24
    Correct
    Wrong
  • 4
    24 : 20 :15
    Correct
    Wrong
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Answer : 2. "15 :10 :12"

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