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When 1 mole of a substance (X) was treat...

When 1 mole of a substance `(X)` was treated with an excess of water, 2 moles of readily combustible gas were produced along with solution which when reacted with `CO_(2)` gas produced a white turbidity. The substance `(X)` could be

A

`Ca`

B

`CaH_(2)`

C

`Ca(OH)_(2)`

D

`Ca(NO_(3))_(2)`

Text Solution

Verified by Experts

The correct Answer is:
B
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Knowledge Check

  • One mole of un known compound was treated with excess of water and resulted in the evolution of two moles of a readily combustle gas . The resulting solution was treated with CO_(2) and resulted in the formation of white turbidity . The unknown compound is

    A
    `Ca`
    B
    `CaH_(2)`
    C
    `Ca(OH)_(2)`
    D
    `Ca(NO)_(2)`

  • When one mole of an organic compound X is reacted with an excess of PCl_(5) then two moles of hydrogen chloride are formed. Which of the following compounds could be X?

    A
    `underset(OH)underset(|)CH_(2)-underset(OH)underset(|)CH_(2)`
    B
    `C_(6)H_(5)CH=O`
    C
    `underset(OH)underset(|)CH_(2)-COOH`
    D

  • When BiCl_3 reacts with excess of water, a white precipitate is produced which is.

    A
    `Bi(OH)_3`
    B
    `Bi_2O_3`
    C
    `BiOCl`
    D
    `Bi_2Cl_3`