MEDIUM
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Which of the following statements is not true regarding metallic hydrides?
(a) They are non-stoichiometric.
(b) These hydrides have low density.
(c) The lattice of these hydrides (except a few) is the same as their parents.
(d) These hydrides obey the law of constant composition.

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Important Questions on Hydrogen and Its Compounds

EASY
On passing electric current over molten ionic hydrides of s-block elements,
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Given below are two statements.

Statement I : Stannane is an example of a molecular hydride.

Statement II : Stannane is a planar molecule. In the light of the above statement, choose the most appropriate answer from the options given below

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Match the following:

  Column I   Column II
(a) Saline hydride (i) CrH
(b) Electron-deficient hydride (ii) CH4
(c) Electron-precise hydride (iii) BeH2
(d) Electron-rich hydride (iv) B2H6
(e) Metallic hydride (v) H2O
EASY

Match List - I with List - II.

List - I
(Hydrides)
List - II
(Nature)
(a) MgH2 (i) Electron precise
(b) GeH4 (ii) Electron deficient
(c) B2H6 (iii) Electron rich
(d) HF (iv) Ionic

Choose the correct answer from the options given below:

HARD

Statement I : Sodium hydride can be used as an oxidising agent.

Statement II : The lone pair of electrons on nitrogen in pyridine makes it basic.

Choose the CORRECT answer from the options given below :

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Match the following.
  List-I   List-II
A Electron-deficient hydride I CH4
B Electron-precise hydride II B2H6
C Electron-rich hydride III CaH2
D Saline hydride IV NiH0.6
    V PH3

 

EASY
Which of the following hydrides is electron deficient?
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Which of the following combination of elements forms interstitial hydrides?
EASY
Alkali metal hydrides follow the thermal stability order
EASY
An example of non-stoichiometric hydride is
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The correct statements among a to d are:

a Saline hydrides produce H2 gas when reacted with H2O.

b Reaction of LiAlH4 with BF3 leads to B2H6 .

c PH3 and CH4 are electron - rich and electron - precise hydrides, respectively.

d HF and CH4 are called as molecular hydrides.
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Which of the following hydrogen compounds is most ionic?
EASY
In respect of non-stoichiometric hydrides, select the wrong statement
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Which of the following hydrogen compounds is most ionic?
EASY
The alkali metals form salt-like hydrides by the direct synthesis at elevated temperature. What is the correct order of thermal stability of these hydrides ?
EASY
Elements of which of the following group (s) of periodic table do not form hydrides.
HARD
When electric current is passed through an ionic hydride in the molten state,
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Which of the following is the correct order of increasing enthalpy of vaporization?
EASY
The compounds formed by the reaction of metals with hydrogen are called
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The increasing order of volatility of hydrides of group 16 elements is -