EASY
JEE Main
IMPORTANT
Earn 100

Given below are two statements: One is labelled as Assertion A and the other labelled as Reason R.
Assertion A : Lithium halides are some what covalent in nature.

Reason R : Lithium possess high polarisation capability.

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

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Important Questions on The s-Block Elements

EASY
JEE Main
IMPORTANT
The number of water molecules in gypsum, dead burnt plaster and plaster of Paris, respectively are:
EASY
JEE Main
IMPORTANT

Match List-I with List-II

List-I List-II
(a) Sodium Carbonate (i) Deacon
(b) Titanium (ii) Castner-Kellner
(c) Chlorine (iii) van-Arkel
(d) Sodium hydroxide (iv) Solvay

Choose the correct answer from the options given below:

EASY
JEE Main
IMPORTANT

Find A, B and C in the following reactions:

NH3+A+CO2NH42CO3

NH42CO3+H2O+BNH4HCO3

NH4HCO3+NaClNH4Cl+C

EASY
JEE Main
IMPORTANT
Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): Barium carbonate is insoluble in water and is highly stable.
Reason (R): The thermal stability of the carbonates increases with increasing cationic size.
Choose the most appropriate answer from the options given below :
MEDIUM
JEE Main
IMPORTANT
The conversion of hydroxyapatite occurs due to presence of F-ions in water. The correct formula of hydroxyapatite is:
EASY
JEE Main
IMPORTANT
What are the products formed in sequence when excess of CO2 is passed in slaked lime?
EASY
JEE Main
IMPORTANT
Match List I with List II :
  List-I
Elements
 

List-II Properties

(a) Li (i) Poor water solubility of I-salt
(b) Na (ii) Most abundant element in cell fluid
(c) K (iii) Bicarbonate salt used in fire extinguisher
(d) Cs (iv) Carbonate salt decomposes easily on heating

Choose the correct answer from the options given
below:

MEDIUM
JEE Main
IMPORTANT

Given below are two statements:

Statement I : None of the alkaline earth metal hydroxides dissolve in alkali.

Srtatement II : Solubility of alkaline earth metal hydroxides in water increases down the group.

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