EASY
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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 ?

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Important Questions on Hydrogen

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:

MEDIUM

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

EASY
On passing electric current over molten ionic hydrides of s-block elements,
MEDIUM
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

 

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 :

MEDIUM
Which of the following combination of elements forms interstitial hydrides?
MEDIUM

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
Alkali metal hydrides follow the thermal stability order
EASY
An example of non-stoichiometric hydride is
MEDIUM
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.
EASY
The compounds formed by the reaction of metals with hydrogen are called
MEDIUM
Which of the following is the correct order of increasing enthalpy of vaporization?
EASY
TiH1.73 is an example of which type of the hydride?
EASY
Which of the following is an example of interstitial hydride?
MEDIUM

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.

EASY
Which of the following hydride is electron-precise hydride?
MEDIUM
Which of the following hydrides is polymeric?
MEDIUM
An element A reacts with hydrogen to form a compound B, which on treatment with water liberates hydrogen gas. A and B, respectively are:
EASY
Elements of which of the following group (s) of periodic table do not form hydrides.
HARD
Water is oxidised to oxygen by