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Question

From the reactions given below, identify (A), (D) respectively.

(A)+ZnH2 gas
(A)+P4PH3
(A)+NH4Cl(D) gas

A
NH4Cl, CO2
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B
CO2 NH4Cl
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C
NH3, NaOH
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D
NaOH, NH3
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Solution

The correct option is D NaOH, NH3
Sodium hydroxide rects with zinc to form sodium zincate and hydrogen gas.
2NaOH(aq)+ZnH2(g)+Na2ZnO2(A)
Phosphorus reacts with aqueous sodium hydroxide solution to form sodium hupophosphite and phosphine.
3NaOH(aq)+P4+3H2OHeat−−3NaH2PO2+PH3(A)
Sodium hydroxide reacts with ammonium chloride to form sodium chloride water and ammonia.
NaOH(aq)+NH4ClHeat−−NaCl+H2O+NH3(g)(A)(D)

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