General
Easy
Physics

Escape velocity on the surface of earth is 11.2kms-1 Escape velocity from a planet whose masses the same as that of earth and radius 1/4 that of earth is.....kms-1

PhysicsGeneral

  1. 2.8
  2. 44.8
  3. 15.6
  4. 22.4

    Answer:The correct answer is: 22.4

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    Given mass of the moon is 1 over 81 of the mass of the earth and corresponding radius is 1 fourth  of the earth, If escape velocity on the earth surface is 11.2kms-1 the value of same on the surface of moon is.....kms-1

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    When zeolite, which is hydrated sodium aluminium silicate, is treated with hard water the sodium ions are exchanged with

    Zeolite when treated with hard water exchange  Cu to the power of plus 2 end exponent times text  and  end text times Mg to the power of plus 2 end exponent timesions (present in hard water) with  Na to the power of plus ions.

    When zeolite, which is hydrated sodium aluminium silicate, is treated with hard water the sodium ions are exchanged with

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    K subscript 2 end subscript C r subscript 2 end subscript O subscript 7 end subscript plus H subscript 2 end subscript S O subscript 4 end subscript plus 4 H subscript 2 end subscript O subscript 2 end subscript rightwards arrow K subscript 2 end subscript S O subscript 4 end subscript plus stack 2 C r O subscript 5 end subscript with text Blue end text below plus 5 H subscript 2 end subscript O

    Hydrogen peroxide is

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    This is due to the formation of C r O subscript 5 end subscript.
    K subscript 2 end subscript C r subscript 2 end subscript O subscript 7 end subscript plus H subscript 2 end subscript S O subscript 4 end subscript plus 4 H subscript 2 end subscript O subscript 2 end subscript rightwards arrow K subscript 2 end subscript S O subscript 4 end subscript plus stack 2 C r O subscript 5 end subscript with text Blue end text below plus 5 H subscript 2 end subscript O
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    Hydrogen can be obtained from water by

    Mg plus 2 straight H subscript 2 straight O not stretchy rightwards arrow Mg left parenthesis OH right parenthesis subscript 2 plus straight H subscript 2 not stretchy upwards arrow
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    Which of the following is/are hard water(s)

    Water containing any cation other than  NH subscript 4 superscript plus and alkali metal is a hard water

    Which of the following is/are hard water(s)

    chemistry-General
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    Pick the odd one out

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    Hydrogen can be obtained from water, by the action of water on

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    The escape velocity of a body on the surface of the earth is 11.2km/sec. If the mass of the earth is increases to twice its present value and the radius of the earth becomes half, the escape velocity becomes...kms-1

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    What is true about ice

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    What is true about ice

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    General
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    Hydrogen will not reduce

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