Practice Question and Answer

Q:

The lateral surface area of a cylinder is 792cm2. If its height is 14cm, then its volume (in cm3) is? [Take π = 22/7 ]

1848 0

  • 1
    2564
    Correct
    Wrong
  • 2
    3929
    Correct
    Wrong
  • 3
    1243
    Correct
    Wrong
  • 4
    3564
    Correct
    Wrong
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Answer : 4. "3564"

Q:

The ratio of the square of volume of two cylinders is a:b and the ratio of their radius is x:y, then what is the ratio of their heights?

1564 0

  • 1
    xa : yb
    Correct
    Wrong
  • 2
    $$xa^2 : yb^2$$
    Correct
    Wrong
  • 3
    $$xb^2 : ya^2$$
    Correct
    Wrong
  • 4
    $$a^2y^2 : b^2x^2$$
    Correct
    Wrong
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Answer : 4. "$$a^2y^2 : b^2x^2$$"

Q:

Optical Fiber works on the principle of

1669 0

  • 1
    Diffusion
    Correct
    Wrong
  • 2
    Refraction
    Correct
    Wrong
  • 3
    Total Internal Reflection
    Correct
    Wrong
  • 4
    Scattering
    Correct
    Wrong
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Answer : 3. "Total Internal Reflection"

Q:

Two numbers are in the ratio 3 : 5 and their HCF is 20. Their LCM is

1735 0

  • 1
    60
    Correct
    Wrong
  • 2
    300
    Correct
    Wrong
  • 3
    30
    Correct
    Wrong
  • 4
    10
    Correct
    Wrong
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Answer : 2. "300"

Q:

What is the 15 % of 34?

1786 0

  • 1
    5
    Correct
    Wrong
  • 2
    5.1
    Correct
    Wrong
  • 3
    4.9
    Correct
    Wrong
  • 4
    5.2
    Correct
    Wrong
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Answer : 2. "5.1"

Q:

Type of a file in a computer can be identified by the______.

1889 0

  • 1
    File Size
    Correct
    Wrong
  • 2
    File path
    Correct
    Wrong
  • 3
    Folder name
    Correct
    Wrong
  • 4
    File extension
    Correct
    Wrong
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Answer : 4. "File extension"

Q:

A mobile plan costs Rs. 32 for 6 minutes. What is the approximate cost, in rupees, for 4 minutes?

1751 0

  • 1
    21.30
    Correct
    Wrong
  • 2
    21.20
    Correct
    Wrong
  • 3
    21.50
    Correct
    Wrong
  • 4
    21.40
    Correct
    Wrong
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Answer : 1. "21.30"

Q:

Simplify : $$ {(2x)^{2}-(2y)^{2}-(4x)^{2}}$$

1549 0

  • 1
    $$ {(12x^{2}-4y^{2})}$$
    Correct
    Wrong
  • 2
    $$ {(12x^{2}+4y^{2})}$$
    Correct
    Wrong
  • 3
    $$ {-12x^{2}+4y^{2}}$$
    Correct
    Wrong
  • 4
    $$ {-12x^{2}-4y^{2}}$$
    Correct
    Wrong
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Answer : 4. "$$ {-12x^{2}-4y^{2}}$$"

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