s-Block Elements · Chemistry · JEE Main

Match List I with List II.

Choose the correct answer from the options given below :

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

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

$$\mathrm{Be}(\mathrm{OH})_{2}$$ reacts with $$\mathrm{Sr}(\mathrm{OH})_{2}$$ to yield an ionic salt.

Choose the incorrect option related to this reaction from the following :

The density of alkali metals is in the order :

In the given reaction cycle

X, Y and Z respectively are :

Alkali metal from the following with least melting point is :

Match List-I with List-II:

Choose the correct answer from the options given below :

The correct order of metallic character is :

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

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 compound is formed, 'A' is :

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 light of the above statements, choose the correct answer from the options given below

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:

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, choose the most appropriate answer from the options given below :

What is the purpose of adding gypsum to cement?

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

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

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

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 of the above statements, choose the correct answer from the options given below :

Match List I with List II :

Choose the correct answer from the options given below :

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 behaviour.

Choose the correct answer from the options given below :

Lithium aluminium hydride can be prepared from the reaction of :

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 options given below :

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 :

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

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

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 using flame tests.

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

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 has large hydration energy due to small size of Be$$^{2+}$$ but relatively large value of atomization enthalpy

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

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. Potassium dissolved in concentrated liquid ammonia is blue in colour and paramagnetic.

E. All the alkali metal hydrides are ionic solids.

Choose the correct answer from the options given below :

Match List I with List II

Choose the correct answer from the options given below :

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'?

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

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

The correct decreasing order for metallic character is :

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 given below :

Which of the following statement is incorrect?

An element A of group 1 shows similarity to an element B belonging to group 2. If A has maximum hydration enthalpy in group 1 then B is :

The metal that has very low melting point and its periodic position is closer to a metalloid is :

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

Assertion A: $$\mathrm{LiF}$$ is sparingly soluble in water.

Reason R: The ionic radius of $$\mathrm{Li}^{+}$$ ion is smallest among its group members, hence has least hydration enthalpy.

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

Reaction of $$\mathrm{BeCl}_{2}$$ with $$\mathrm{LiAlH}_{4}$$ gives :

(A) $$\mathrm{AlCl}_{3}$$

(B) $$\mathrm{BeH}_{2}$$

(C) $$\mathrm{LiH}$$

(D) $$\mathrm{LiCl}$$

(E) $$\mathrm{BeAlH}_{4}$$

Choose the correct answer from options given below :

The correct order of density is :

Choose the correct order of density of the alkali metals :

Match List - I with List - II :

Correct answer is :

Correct statement about alkali metal oxides is :

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

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 :

Match List-I with List-II

Choose the most appropriate answer from the options given below :

Addition of H₂SO₄ to BaO₂ produces :

BeCl₂ reacts with LiAlH₄ to give :

s-block element which cannot be qualitatively confirmed by the flame test is :

The correct order of melting point is :

Which one of the following alkaline earth metal ions has the highest ionic mobility in its aqueous solution?

In the industrial production of which of the following, molecular hydrogen is obtained as a byproduct?

Which one of the following compounds is used as a chemical in certain type of fire extinguishers?

Which of the following statements are correct?

(A) Both LiCl and MgCl₂ are soluble in ethanol.

(B) The oxides Li₂O and MgO combine with excess of oxygen to give superoxide.

(C) LiF is less soluble in water than other alkali metal fluorides.

(D) Li₂O is more soluble in water than other alkali metal oxides.

Choose the most appropriate answer from the options given below :

$$\mathrm{Mg}\left(\mathrm{NO}_{3}\right)_{2} \cdot \mathrm{XH}_{2} \mathrm{O}$$ 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 $$\mathrm{X}$$ and $$\mathrm{Y}$$ is _____________.

On heating, $$\mathrm{LiNO_3}$$ gives how many compounds among the following __________

$$\mathrm{Li_2O,N_2,O_2,LiNO_2,NO_2}$$

BeO reacts with HF in presence of ammonia to give [A] which on thermal decomposition produces [B] and ammonium fluoride. Oxidation state of Be in [A] is ____________.