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s-Block Elements

Chemistry

Previous Years Questions

MCQ (More than One Correct Answer)

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The compound(s) formed upon combustion of sodium metal in excess air is (are)
IIT-JEE 2009
MgSO4 on reaction with NH4OH and Na2HPO4 forms a white crystalline precipitate. What is its formula?...
IIT-JEE 2006
The species present in solution when CO2 is dissolved in water are
IIT-JEE 2006
Highly pure dilute solution of sodium in liquid ammonia
IIT-JEE 1998
The species that do not contain peroxide ions are
IIT-JEE 1992
When zeolite, which is hydrated sodium aluminium silicate is treated with hard water the sodium ions are exchanged with
IIT-JEE 1990

MCQ (Single Correct Answer)

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The question contains STATEMENT - 1 (Assertion) and STATEMENT - 2 (Reason) and has 4 choices (a), (b), (c) and (d) out o...
IIT-JEE 2007
A sodium salt on treatment with MgCl3 gives white precipitate only on heating. The anion of the sodium salt is...
IIT-JEE 2004 Screening
The set representing the correct order of first ionization potential is
IIT-JEE 2001 Screening
The following compounds have been arranged in order of their increasing thermal stabilities. Identify the correct order ...
IIT-JEE 1996
Statement (S) The alkali metals can form ionic hydrides which contain the hydride ion H-. Explanation (E) The alkali met...
IIT-JEE 1994
The volume strength of 1.5 N H2O2 solution is
IIT-JEE 1991
The metallic lustre exhibited by sodium is explained by
IIT-JEE 1987
The pair of compound which cannot exist together in solution is:
IIT-JEE 1986
The oxide that gives hydrogen peroxide on treatment with a dilute acid is
IIT-JEE 1985
Molecular formula of Glauber's salt is:
IIT-JEE 1985
Hydrogen gas will not reduce
IIT-JEE 1985
The hydration energy of Mg++ is larger than that of:
IIT-JEE 1984
Heavy water is
IIT-JEE 1983
A solution of sodium metal in liquid ammonia is strongly reducing due to the presence of
IIT-JEE 1981
Calcium is obtained by
IIT-JEE 1980
HCL is added to the following oxides. Which one would give H2O2?
IIT-JEE 1980
The substance absorbs CO2 and violently reacts with water. The substance is
IIT-JEE 1978

Subjective

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Give reasons of the following: BeCl2 can be easily hydrolysed.
IIT-JEE 1999
Hydrogen peroxide acts both as an oxidising and as a reducing agent in alkaline solution towards certain first row trans...
IIT-JEE 1998
Work out the following using chemical equation : Chlorination of calcium hydroxide produces bleaching powder.
IIT-JEE 1998
Arrange the following sulphates of Alkaline earth metals in order of decreasing thermal stability : BeSO4, MgSO4, CaSO4,...
IIT-JEE 1997
Give reactions for the oxidation of hydrogen peroxide with potassium permanganate in acidic medium.
IIT-JEE 1997
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 b...
IIT-JEE 1997
To a 25ml H2O2 solution, excess of acidified solution of potassium iodide was added. The iodine liberated required 20 ml...
IIT-JEE 1997
Give reasons of the following: The crystalline salts of alkaline earth metals contain more water of crystallisation than...
IIT-JEE 1997
Explain the difference in the nature of bonding in LiF and LiI.
IIT-JEE 1996
A 5.0 cm3 solution of H2O2 liberates 0.508 g of iodine from an acidified KI solution. Calculate the strength of H2O2 sol...
IIT-JEE 1995
Complete and balance the following reactions: Ca5(PO4)3F + H2SO4 + H2O $$\buildrel {Heat} \over \longrightarrow $$ .......
IIT-JEE 1994
Give briefly the isolation of magnesium from sea water by the Dow process. Give equations for the steps involved.
IIT-JEE 1993
Give reasons of the following: Hydrogen peroxide acts as an oxidising as well as a reducing agent.
IIT-JEE 1992
Write down the balanced equation for the reaction when: Carbon dioxide is passed through a suspension of lime stone in w...
IIT-JEE 1991
Write down the balanced equation for the reaction when: Potassium ferricyanide reacts with hydrogen peroxide in basic so...
IIT-JEE 1989
Write down the balanced equation for the reaction when: Carbon dioxide is passed through a concentrated aqueous solution...
IIT-JEE 1988
Give reasons of the following: Why is sodium chloride added during electrolysis of fused anhydrous magnesium chloride?...
IIT-JEE 1987
Give reasons of the following: Magnesium oxide is used for the lining of steel making furnace.
IIT-JEE 1987
Give reasons of the following: Hydrogen peroxide is a better oxidising agent than water.
IIT-JEE 1986
Write down the balanced equations for the reaction when: Calcium phosphate is heated with a mixture of sand and carbon;...
IIT-JEE 1985
Write down the balanced equations for the reaction when: An alkaline solution of potassium ferricyanide is reacted with ...
IIT-JEE 1982
How will you prepare bleaching powder from slaked lime.
IIT-JEE 1982
Give reasons of the following: Sodium carbonate is made by Solvay process but the same process is not extended to the ma...
IIT-JEE 1981

Fill in the Blanks

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Ca2+ has a small ionic radius than K+ because it has ______.
IIT-JEE 1993
The electrolysis of molten sodium hydride liberates ____ gas at the _____
IIT-JEE 1989
Sodium dissolved in liquid ammonia conducts electricity because ________.
IIT-JEE 1985
The absorption of hydrogen by palladium is commonly known as ______.
IIT-JEE 1983
Anhydrous MgCl2 is obtained by hydrated salt with ______.
IIT-JEE 1980

True or False

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Sodium when burnt in excess of oxygen gives sodium oxide.
IIT-JEE 1987
The softness of group I-A metals increases down the group with increasing atomic number.
IIT-JEE 1986
MgCl2.6H2O on heating give anhydrous MgCl2
IIT-JEE 1982

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