Ammonia gas is evolved by heating

N a N O_{3}

with Zn dust and sodium hydroxide

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N a N O_{2}

with dilute

H N O_{3}

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Dry

(N H_{4})_{2} C r_{2} O_{7}

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Ammonium chloride with lime water

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Solution

The correct options are
A $N a N O_{3}$ with Zn dust and sodium hydroxide
D Ammonium chloride with lime water
A) $N a N O_{3} + 7 N a O H + 4 Z n ⟶ 4 N a_{2} Z n O_{2} + N H_{3} + 2 H_{2} O$

B) $N a N O_{2} + 2 H N O_{3} \to N a N O_{3} + 2 N O_{2} + H_{2} O$

C) $(N H_{4})_{2} C r_{2} O_{7} \to N_{2} + C r_{2} O_{3} + 4 H_{2} O$

D) $2 N H_{4} C l + C a (O H)_{2} \to 2 N H_{3} + C a C l_{2} + 2 H_{2} O$

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Ammonia gas is evolved by heating

The correct options are A NaNO3 with Zn dust and sodium hydroxide D Ammonium chloride with lime waterA) NaNO3+7NaOH+4Zn⟶4Na2ZnO2+NH3+2H2O B) NaNO2+2HNO3→NaNO3+2NO2+H2O C) (NH4)2Cr2O7→ N2+Cr2O3+4H2O D) 2NH4Cl+Ca(OH)2→ 2NH3+CaCl2+2H2O