HARD
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On heating a mixture containing 1 mole each of Li2CO3 and K2CO3 ..... is/are formed.

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Important Questions on The s-Block Elements

EASY

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

Find A, B and C in the following reactions:

NH3+A+CO2NH42CO3

NH42CO3+H2O+BNH4HCO3

NH4HCO3+NaClNH4Cl+C

EASY
Potassium cyanide is made alkaline with NaOH and boiled with thiosulphate ions. The solution is cooled and acidified with HCl and this solution with iron (III)chloride produces :-
HARD
Which of the following salt would give SO2 with hot and dil H2SO4 and also decolourises Br2 water?
EASY

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:

MEDIUM

Products (X and Y) of the following reactions (I and II) are :
I. 2NaOH(Cold and dil.)+Cl2NaCl+X+H2O

II. 6NaOH(Hot and conc.)+3Cl2NaCl+Y+3H2O

EASY
Amongst baking soda, caustic soda and washing soda carbonate anion is present in :
 
EASY
The gas produced when Zn metal is heated with aqueous NaOH is
EASY
Which among the following gas is bubbled through the brine solution during the preparation of sodium carbonate in Solvay's process?
EASY
A sodium salt of an unknown anion when treated with MgCl2 gave a white precipitate only upon boiling. Identify the anion.
EASY
In the preparation of baking soda, H2O and CO2 in ratio is used to react with Na2CO3.
EASY
One of the by-products formed during the recovery of NH3 from Solvay process is:
EASY
Which one of the following compounds is used as a chemical in certain type of fire extinguishers
HARD
Lithium nitrate and sodium nitrate, when heated separately, respectively, give
MEDIUM
The reaction of zinc with excess of aqueous alkali, evolves hydrogen gas and gives
MEDIUM
On strong heating, the nitrate of which metal does not produce nitrogen dioxide?
EASY
A hydrated solid X on heating initially gives a monohydrated compound Y. Y upon heating above 373 K leads to an anhydrous white powder Z. X and Z, respectively, are;