s-Block Elements

Match List I with List II.

.tg {border-collapse:collapse;border-spacing:0;}
.tg td{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px;
overflow:hidden;padding:10px 5px;word-break:normal;}...

What is the purpose of adding gypsum to cement?

Given below are two statements:
Statement I : Lithium and Magnesium do not form superoxide
Statement II : The ionic radius of \(\mathrm{Li}^{+}\) is larger than ionic radius of \(\mathrm{Mg}^{2+}\)
In the light of the above statements, choo...

For a good quality cement, the ratio of lime to the total of the oxides of \(\mathrm{Si}, \mathrm{Al}\) and $\mathrm{Fe}$ should be as close as to :

Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R.
Assertion A : Sodium is about 30 times as abundant as potassium in the oceans.
Reason R : Potassium is bigger in size than sodium.
In the ...

Structures of \(\mathrm{BeCl}_{2}\) in solid state, vapour phase and at very high temperature respectively are :

Ion having highest hydration enthalpy among the given alkaline earth metal ions is :

The product, which is not obtained during the electrolysis of brine solution is :

The number of alkali metal(s), from $\mathrm{Li}, \mathrm{K}, \mathrm{Cs}$, Rb having ionization enthalpy greater than $400 \mathrm{~kJ}$ $\mathrm{mol}^{-1}$ and forming stable super oxide is _____________.

The element playing significant role in neuromuscular function and interneuronal transmission is :

The alkaline earth metal sulphate(s) which are readily soluble in water is/are :
A. \(\mathrm{BeSO}_{4}\)
B. \(\mathrm{MgSO}_{4}\)
C. \(\mathrm{CaSO}_{4}\)
D. \(\mathrm{SrSO}_{4}\)
E. \(\mathrm{BaSO}_{4}\)
Choose the correct answer from the...

Lithium aluminium hydride can be prepared from the reaction of :

Which of the following reaction is correct?

Chlorides of which metal are soluble in organic solvents :

The correct order of hydration enthalpies is
(A) K\(^+\)
(B) Rb\(^+\)
(C) Mg\(^{2+}\)
(D) Cs\(^+\)
(E) Ca\(^{2+}\)
Choose the correct answer from the options given below :

On heating, \(\mathrm{LiNO_3}\) gives how many compounds among the following __________
\(\mathrm{Li_2O,N_2,O_2,LiNO_2,NO_2}\)

Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R
Assertion A : The alkali metals and their salts impart characteristic colour to reducing flame.
Reason R : Alkali metals can be detected us...

Which of the following represents the correct order of metallic character of the given elements?

Which one among the following metals is the weakest reducing agent?

Reaction of BeO with ammonia and hydrogen fluoride gives A which on thermal decomposition gives \(\mathrm{BeF_2}\) and \(\mathrm{NH_4F}\). What is 'A'?

Match List I with List II

.tg {border-collapse:collapse;border-spacing:0;}
.tg td{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px;
overflow:hidden;padding:10px 5px;word-break:normal;}
...

Identify the correct statements about alkali metals.
A. The order of standard reduction potential (M\(^+\)
| M) for alkali metal ions is Na > Rb > Li.
B. CsI is highly soluble in water.
C. Lithium carbonate is highly stable to heat.
D. Po...

Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R
Assertion A : Beryllium has less negative value of reduction potential compared to the other alkaline earth metals.
Reason R : Beryllium ha...

Choose the correct statement(s) :
A. Beryllium oxide is purely acidic in nature.
B. Beryllium carbonate is kept in the atmosphere of \(\mathrm{CO_2}\).
C. Beryllium sulphate is readily soluble in water.
D. Beryllium shows anomalous behaviou...

Match List I with List II :

.tg {border-collapse:collapse;border-spacing:0;}
.tg td{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px;
overflow:hidden;padding:10px 5px;word-break:normal;...

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) : Gypsum is used for making fireproof wall boards.
Reason (R) : Gypsum is unstable at high temperatures.
In the light o...

Given below are two statements : One is labelled as Assertion A and the other is labelled as Reason R :

Assertion (A) : $\mathrm{BeCl}_{2}$ and $\mathrm{MgCl}_{2}$ produce characteristic flame
Reason (R) : The excitation energy is high in ...

\(\mathrm{Be}(\mathrm{OH})_{2}\) reacts with \(\mathrm{Sr}(\mathrm{OH})_{2}\) to yield an ionic salt. Choose the incorrect option related to this reaction from the following :

Identify the correct order of standard enthalpy of formation of sodium halides :

Better method for preparation of \(\mathrm{BeF}_{2}\), among the following is :

In the given reaction cycle

X, Y and Z respectively are :

The density of alkali metals is in the order :

Match List-I with List-II:

.tg {border-collapse:collapse;border-spacing:0;}
.tg td{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px;
overflow:hidden;padding:10px 5px;word-break:normal;}...

\(\mathrm{Mg}\left(\mathrm{NO}_{3}\right)_{2} \cdot \mathrm{XH}_{2} \mathrm{O}\) and \(\mathrm{Ba}\left(\mathrm{NO}_{3}\right)_{2} \cdot \mathrm{YH}_{2} \mathrm{O}\), represent formula of the crystalline forms of nitrate salts. Sum of $$\ma...

Alkali metal from the following with least melting point is :

Lime reacts exothermally with water to give 'A' which has low solubility in water. Aqueous solution of 'A' is often used for the test of CO\(_2\), a test in which insoluble B is formed. If B is further reacted with CO\(_2\) then soluble com...

Number of water molecules in washing soda and soda ash respectively are :

The correct order of metallic character is :

Correct statement about alkali metal oxides is :

Match List - I with List - II :

.tg {border-collapse:collapse;border-spacing:0;}
.tg td{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px;
overflow:hidden;padding:10px 5px;word-break:nor...

Match List-I with List-II

.tg {border-collapse:collapse;border-spacing:0;}
.tg td{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px;
overflow:hidden;padding:10px 5px;word-break:normal;}
...

Arrange the following in the decreasing order of their covalent character :
(A) LiCl
(B) NaCl
(C) KCl
(D) CsCl
Choose the most appropriate answer from the options given below :

Amongst baking soda, caustic soda and washing soda, carbonate anion is present in :

Lithium nitrate and sodium nitrate, when heated separately, respectively, give :

Portland cement contains 'X' to enhance the setting time. What is 'X'?

Which of the following statement is incorrect?

Statement I : An alloy of lithium and magnesium is used to make aircraft plates.
Statement II : The magnesium ions are important for cell-membrane integrity.
In the light the above statements, choose the correct answer from the options give...

The correct decreasing order for metallic character is :

BeCl2 reacts with LiAlH4 to give :

Addition of H2SO4 to BaO2 produces :