Which of the following is laboratory preparation of dihydrogen?
$3 F e + 4 H_{2} O (s t e a m) \to F e_{3} O_{4} + 4 H_{2}$
$2 N a + 2 H_{2} O \to 2 N a O H + H_{2}$
$Z n + H_{2} S O_{4} (d i l .) \to Z n S O_{4} + H_{2}$
$C a H_{2} + 2 H_{2} O \to C a (O H)_{2} + 2 H_{2}$

Question

Which of the following is laboratory preparation of dihydrogen?
$3 F e + 4 H_{2} O (s t e a m) \to F e_{3} O_{4} + 4 H_{2}$
$2 N a + 2 H_{2} O \to 2 N a O H + H_{2}$
$Z n + H_{2} S O_{4} (d i l .) \to Z n S O_{4} + H_{2}$
$C a H_{2} + 2 H_{2} O \to C a (O H)_{2} + 2 H_{2}$

Toppr Admin · Accepted Answer

The correct option is D Zn-H2SO4-dil-x2192-ZnSO4-H2In the laboratory- hydrogen gas is prepared by the action of dilute H2SO4 on granulated zinc-xA0-Zn-H2SO4-dil-x2192-ZnSO4-H2

Which of the following is laboratory preparation of dihydrogen?3Fe+4H2O(steam)→Fe3O4+4H22Na+2H2O→2NaOH+H2Zn+H2SO4(dil.)→ZnSO4+H2CaH2+2H2O→Ca(OH)2+2H2

The correct option is D Zn+H2SO4(dil.)→ZnSO4+H2In the laboratory, hydrogen gas is prepared by the action of dilute H2SO4 on granulated zinc. Zn+H2SO4(dil.)→ZnSO4+H2

Which of the following is laboratory preparation of dihydrogen?
$3 F e + 4 H_{2} O (s t e a m) \to F e_{3} O_{4} + 4 H_{2}$
$2 N a + 2 H_{2} O \to 2 N a O H + H_{2}$
$Z n + H_{2} S O_{4} (d i l .) \to Z n S O_{4} + H_{2}$
$C a H_{2} + 2 H_{2} O \to C a (O H)_{2} + 2 H_{2}$

The correct option is D $Z n + H_{2} S O_{4} (d i l .) \to Z n S O_{4} + H_{2}$
In the laboratory, hydrogen gas is prepared by the action of dilute $H_{2} S O_{4}$ on granulated zinc.
$Z n + H_{2} S O_{4} (d i l .) \to Z n S O_{4} + H_{2}$