Home
Class 12
CHEMISTRY
Which of the following combination will ...

Which of the following combination will produce `H_(2)` gas ?

A

Fe metal and conc. `HNO_(3)`

B

Cu metal and conc. `HNO_(3)`

C

Au metal and NaCN (aq) in the presence of air

D

Zn metal and NaOH (aq)

Text Solution

Verified by Experts

The correct Answer is:
D
`Fe+ Conc. HNO_(3) to "Passivity"`
`Cu + Conc. HNO_(3) to NO_(2)`
`Au + NaCN + O_(2) [Au(CN)_(2)]^(-)`
`Zn+ 2NaOH to Na_(2)ZnO_(2) + H_(2)`
Promotional Banner

Topper's Solved these Questions

  • S AND P BLOCK ELEMENTS

    ERRORLESS |Exercise JEE Section (More than one choice correct answer )|40 Videos

  • S AND P BLOCK ELEMENTS

    ERRORLESS |Exercise JEE Section (Reasoning type question )|15 Videos

  • S AND P BLOCK ELEMENTS

    ERRORLESS |Exercise Critical thinking (Objective Questions)|62 Videos

  • Practical Organic Chemistry

    ERRORLESS |Exercise JEE Ssection (More than one choice correct answer)|16 Videos

  • SOLID STATE

    ERRORLESS |Exercise JEE section (Numeric )|1 Videos

Similar Questions

Explore conceptually related problems

Which of the following combination doen's evolve Cl_(2) gas?

Which of the following combination does not evolve Cl_(2) gas?

Which of the following compound will not produce methane gas on reaction with CH_(3)MgBr .

Which of the following reaction produce Cl_(2) gas?

Which of the following combination of parents can produce a child with erythroblastosis fetalis?

Which of the following metals produce H_(2) gas on reaction with cold water?

ERRORLESS -S AND P BLOCK ELEMENTS-JEE Section (Only choice correct answer)
  1. Under ambient conditions, the total number of gases released as produc...

    Text Solution

    |

  2. Hydrogen peroxide in its reaction with KIO(4) and NH(2)OH respectively...

    Text Solution

    |

  3. The molecular formula of a commercial resin used for exchanging ions i...

    Text Solution

    |

  4. From the following statements regarding H(2)O(2), choose the incorrect...

    Text Solution

    |

  5. Which one of the following alkaline earth metal sulphates has its hydr...

    Text Solution

    |

  6. Which among the following is the most reactive gt

    Text Solution

    |

  7. Match the catalysis to the correct process

    Text Solution

    |

  8. Which has the highest boiling point?

    Text Solution

    |

  9. The species in which the N-atom is in a state of sp hybridisation is

    Text Solution

    |

  10. The pair in which phosphours atoms have a formed oxidation state of +3...

    Text Solution

    |

  11. The main oxides formed on combustion of Li,Na and K in excess of air r...

    Text Solution

    |

  12. Which of the following atoms has the highest first ionisation energy ?

    Text Solution

    |

  13. Which one of the following statements about water is false ?

    Text Solution

    |

  14. The increasing order of atomic radii of the following group 13 element...

    Text Solution

    |

  15. The reagment (s) that can selectively precipitate S^(2-) from a mixtu...

    Text Solution

    |

  16. Both lithium and magnesium display several similar properties due to t...

    Text Solution

    |

  17. The products obtained when chlorine gas reacts with cold and dilute aq...

    Text Solution

    |

  18. Which of the following combination will produce H(2) gas ?

    Text Solution

    |

  19. Hydrogen peroxide oxidises [Fe(CN)(6)]^(4-) to [Fe(CN)(6)]^(3-) in aci...

    Text Solution

    |

  20. The compound that does not produce nitrogen gas by the thermal decompo...

    Text Solution

    |