MEDIUM
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The alkali metal that reacts with nitrogen directly to form nitride is

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Important Questions on The s-Block Elements

EASY
s-block element which cannot be qualitatively confirmed by the flame test is
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

EASY
Ine metal which dissolves in liquid ammonia to give a blue-black solution due to formation of solvated electron is
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
A piece of Mg ribbon is heated to redness in nitrogen atmosphere and the treated with water. The gas evolved is
EASY
Valence shell electronic configuration of fourth element of group- 2 in periodic table is
MEDIUM
The alkaline earth metal nitrate that does not crystallise with molecules is:
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

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
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
The pair of s-block metals, which gives crimson colour to the flame is:
EASY
In context with beryllium, which one of the following statements is incorrect.
EASY
The covalent alkaline earth metal halide X=Cl,Br,I is:
EASY
The element whose salts cannot be detected by flame test is.