s-Block Elements · Chemistry · JEE Advanced

The compound(s) formed upon combustion of sodium metal in excess air is (are)

MgSO₄ on reaction with NH₄OH and Na₂HPO₄ forms a white crystalline precipitate. What is its formula?

Highly pure dilute solution of sodium in liquid ammonia

The species that do not contain peroxide ions are

When zeolite, which is hydrated sodium aluminium silicate is treated with hard water the sodium ions are exchanged with

The question contains STATEMENT - 1 (Assertion) and STATEMENT - 2 (Reason) and has 4 choices (a), (b), (c) and (d) out of which ONLY ONE is correct.
STATEMENT - 1 Alkali metals dissolve in liquid ammonia to give blue solutions. because
STATEMENT - 2 Alkali metals is liquid ammonia give solvated species of the type [M(NH₃)_n]⁺ (M = alkali metals)

A sodium salt on treatment with MgCl₃ gives white precipitate only on heating. The anion of the sodium salt is

The set representing the correct order of first ionization potential is

The following compounds have been arranged in order of their increasing thermal stabilities. Identify the correct order
K₂CO₃ (A), MgCO₃ (B), CaCO₃ (C), BeCO₃ (D)

Statement (S) The alkali metals can form ionic hydrides which contain the hydride ion H^-.
Explanation (E) The alkali metals have low electronegativity; their hydrides conduct electricity when fused and liberate hydrogen at the anode.

The metallic lustre exhibited by sodium is explained by

The pair of compound which cannot exist together in solution is:

The oxide that gives hydrogen peroxide on treatment with a dilute acid is

Molecular formula of Glauber's salt is:

The hydration energy of Mg⁺⁺ is larger than that of:

A solution of sodium metal in liquid ammonia is strongly reducing due to the presence of

HCL is added to the following oxides. Which one would give H₂O₂?

Calcium is obtained by

The substance absorbs CO₂ and violently reacts with water. The substance is

Give reasons of the following:
BeCl₂ can be easily hydrolysed.

Work out the following using chemical equation :
Chlorination of calcium hydroxide produces bleaching powder.

Give reasons of the following:
The crystalline salts of alkaline earth metals contain more water of crystallisation than the corresponding alkali metal salts.

Element A burns in nitrogen to give an ionic compound B. Compound B reacts with water to give C and D. A solution of C becomes 'milky' on bubbling carbon dioxide. Identify A, B, C and D.

Arrange the following sulphates of Alkaline earth metals in order of decreasing thermal stability : BeSO₄, MgSO₄, CaSO₄, SrSO₄

Explain the difference in the nature of bonding in LiF and LiI.

Complete and balance the following reactions:
Ca₅(PO₄)₃F + H₂SO₄ + H₂O $$\buildrel {Heat} \over \longrightarrow $$ ........ + 5CaSO₄.2H₂O + ........

Write down the balanced equation for the reaction when:
Carbon dioxide is passed through a suspension of lime stone in water.

Write down the balanced equation for the reaction when:
Potassium ferricyanide reacts with hydrogen peroxide in basic solution

Write down the balanced equation for the reaction when:
Carbon dioxide is passed through a concentrated aqueous solution of sodium chloride saturated with ammonia.

Give reasons of the following :
Magnesium oxide is used for the lining of steel making furnace.

Write down the balanced equations for the reaction when:
Calcium phosphate is heated with a mixture of sand and carbon;

How will you prepare bleaching powder from slaked lime.

Write down the balanced equations for the reaction when:
An alkaline solution of potassium ferricyanide is reacted with hydrogen peroxide.

Give reasons of the following:
Sodium carbonate is made by Solvay process but the same process is not extended to the manufacture of potassium carbonate.

Ca²⁺ has a small ionic radius than K⁺ because it has ______.

The electrolysis of molten sodium hydride liberates ____ gas at the _____

Sodium dissolved in liquid ammonia conducts electricity because ________.

Anhydrous MgCl₂ is obtained by hydrated salt with ______.

Sodium when burnt in excess of oxygen gives sodium oxide.

The softness of group I-A metals increases down the group with increasing atomic number.

MgCl₂.6H₂O on heating give anhydrous MgCl₂