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The reaction of alkaline earth metals with alcohols is an example of which of the following type of reactions?

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Important Questions on The s-Block Elements

MEDIUM

Given below are two statements, one is labelled as

Assertion A and the other is labelled as Reason R.

Assertion A : Beryllium has less negative value of reduction potential compared to the other alkaline earth metals

Reason R : Beryllium has large hydration energy due to small size of Be2+but relatively large value of atomisation enthalpy.

In the light of the above statements, choose the most appropriate answer from the options given below.

MEDIUM

Reaction of BeCl2 with LiAlH4 gives :

(A) AlCl3

(B) BeH2

(C) LiH

(D) LiCl

(E) BeAlH4

Choose the correct answer from options given below

MEDIUM
The pair of elements that form both oxides and nitrides, when burnt in air are
EASY
s-block element which cannot be qualitatively confirmed by the flame test is
EASY
A piece of Mg ribbon is heated to redness in nitrogen atmosphere and the treated with water. The gas evolved is
EASY
Ine metal which dissolves in liquid ammonia to give a blue-black solution due to formation of solvated electron is
MEDIUM
The alkaline earth metal nitrate that does not crystallise with molecules is:
EASY

Match List-I with List-II

  List-I   List-II
(a) Ca(OCl)2 (i) Antacid
(b) CaSO4·12H2O (ii) Cement
(c) CaO (iii) Bleach
(d) CaCO3 (iv) Plaster of paris

Choose the most appropriate answer from the

MEDIUM
A metal 'M' readily gives MSO4, which is soluble in water. It forms its oxide M0 which is amphoteric. It forms an insoluble hydroxide M(OH)2, which is soluble in NaOH solution. The M is
EASY
The pair of s-block metals, which gives crimson colour to the flame is:
MEDIUM
Magnesium is burnt in the air to form A and B. When B is hydrolyzed, C and D are formed. D is the reactant in the manufacture of nitric acid by Ostwald's process. What is C ?
EASY
Valence shell electronic configuration of fourth element of group- 2 in periodic table is
MEDIUM

Given below are two statements :

Statement I : Lithium and Magnesium do not form superoxide

Statement II : The ionic radius of Li+ is larger than ionic radius of Mg2+ In the light of the above statements, choose the most appropriate answer from the questions given below :

In the light of the above statements, choose the most appropriate answer from the questions given below :

EASY

Match list-I with list-II :

       
(a) Be (i) Treatment of cancer
(b) Mg (ii) Extraction of metals
(c) Ca (iii) Incendiary bombs and signals
(d) Ra (iv) Windows of X-ray tubes
    (v) Bearings for motor engines.

Choose the most appropriate answer, the option given below :

EASY
In context with beryllium, which one of the following statements is incorrect.
EASY
The element whose salts cannot be detected by flame test is.