ChemistryS-block Elements Questions for CBSE Class 11th

S-block Elements Questions for CBSE Class 11th

The correct order of stability for the following superoxides is

Which has maximum I.E?

Concentrated solution of the metals of IIA in ammonia are bronze-coloured due to formation of

Select the correct statements about CaO.

Some of the group IIA metal halides are covalent and soluble in organic solvents. Among the following metal halides, the one which is soluble in ethanol Highest extent

MetaI carbides on reaction with H 2 O form CH 4 .Carbide can be

Borax is prepared by treating colemanite with

Which of the following elements has the tendency to form covalent compounds?

Amphoteric nature is shown by

Thermal stability of MCO 3 is in order

When carbon reacts with Be at high temperature, compound formed

Temporary hardness is due to dissolved

Plaster of Paris is

Solubility of M(OH) 2 is in order

BaSO 2 is used in medicine as

Be and Al resemble in many aspects, but not in the following

Which of the following elements does not form hydride by direct heating with dihydrogen?

Which of the carbonates given below is unstable in air and is kept in CO 2, atmosphere to avoid decomposition?

Suspension of slaked lime in water is known as

A chemical A is used for the preparation of washing soda to recover ammonia. When CO 2 is bubbled through an aqueous solution of A, the solution turns milky. It is used in white washing due to disinfectant nature. What is the chemical formula of A?

Identify the incorrect statement

Identify correct statements among the following?

Select the correct statement(s).

Which of the following anion(s) produce ppt with baryta water [i.e., B a O H 2 ]

Identify the correct options about B e C l 2

Find out the correct options?

A ⟶ Δ B ( oxide ) + CO 2 B + H 2 O ⟶ C C + CO 2 ⟶ A ( milky ) C + NH 4 Cl ⟶ Δ D ( gas ) D + H 2 O + CO 2 ⟶ E E + NaCl ⟶ F F ⟶ Δ Na 2 CO 3 + CO 2 + H 2 O

Which of the following liberates O 2 upon hydrolysis?

A ⟶ Δ B ( oxide ) + CO 2 B + H 2 O ⟶ C C + CO 2 ⟶ A ( milky ) C + NH 4 Cl ⟶ Δ D ( gas ) D + H 2 O + CO 2 ⟶ E E + NaCl ⟶ F F ⟶ Δ Na 2 CO 3 + CO 2 + H 2 O B and C are:

Which of the following pairs can be distinguished by the action of heat?

Select the incorrect statement about alkaline earth metals.

Which is common between II A and II B?

Stability of nitrides of IIA group elements is in order

Mg has favourable standard reduction electrode potential E Mg 2 + / Mg ∘ = − 2.37 V but it does not react readily. It is because of

Out of BeO, ZnO, CaO and MgO, amphoteric oxides are

Which fumes in air?

Epsom salt MgSO 4 ⋅ 7 H 2 O has correct formation as

CaSO 4 .H 2 O is called

In polymeric (BeCl 2 ) n , there are

Select the incorrect statement.

Select the correct statement.

Which of the following statements is true about Ca(OH) 2 ?

By adding gypsum to cement

Dead burnt plaster is

Lightest alkaline earth metal is

The electron affinity of Be is similar to

Which of the following oxidation state of barium is observed in BaO 2

which of following is insoluble in water and decompose on heating

Halides of alkaline earth metals from hydrates such as MgCl 2 ⋅ 6 H 2 O , CaCl 2 ⋅ 6 H 2 O , BaCl 2 ⋅ 2 H 2 O , and SrCl 2 ⋅ 2 H 2 O . This shows that halides of group II elements.

Which of the following has the least ionization potential among these metals

Alkaline earth metal salt are :

Soda ash on heating gives

The thermal stability of the following alkali metal chlorides follows the order:

Ripening of fruits can be carried out in the presence of

Which of the following carbides produces propyne on

A chloride dissolves appreciably in cold water. When placed on a platinum wire in Bunsen flame, no distinctive color is noticed. Which one is cation?

Correct order of stability of group IIA metal carbonate is:

The sodium is made by electrolysis of a molten mixture of 40% NaCl and 60% CaCl 2 because

As the nuclear charge increases from neon to calcium, the orbital energies

Bleaching powder is obtained by treating Cl 2 with

Which one of the following processes will produce hard water?

In the electrolysis of aqueous NaCl solution, side reactions taking place are: (I) 2 OH − + Cl 2 ⟶ C l – + OCl − + H 2 O (II) 2 Na + 2 H 2 O ⟶ 2 NaOH + H 2 (III) 4 OH − ⟶ O 2 + 2 H 2 + 4 e − Select the correct alternate :

The oxidation states of the most electronegative element in the products of the reaction BaO 2 with dil. H 2 SO 4 are

Calcium imide on hydrolysis gives gas (P) which on oxidation by bleaching powder gives gas (Q). Gas (Q)on reaction with magnesium gives compound (R) which on hydrolysis again gives gas (P). Identify (P) (Q), and (R)

A hydrated colorless solid (A) is water soluble and finds use in medicine as a laxative. When a solution of (A) is treated with ammonium phosphate, a white precipitate is formed. (A) gives a pink mass is cobalt nitrate test. What is (A) ?

Which of the following equations is correct?

Select the correct basic character

Calcium is obtained by the

The carbonate that will not decompose on heating is/are

Among the following, the diamagnetic compound is/are

The correct statement(s) is/are:

The number of bonds formed by beryllium in its dimeric form of BeCl 2 is

Which one of the following processes is/are not used for the manufacture of calcium?

Which of the following is / are amphoteric oxide?

The sum of common oxidation states of stroncium and rubidium is

Highly pure dilute solution of sodium in liquid ammonia

What is water of crystallisation in gypsum?

How many 3C – 4e – bonds are present in dimer of BeCl 2 ?

Find the number of chloride(s) which do not impart color to the flame from the following BeCl 2 , SrCl 2 , MgCl 2 , CaCl 2 , BaCl 2

How many p-orbital(s) is/are involved in hydridization of solid BeCl 2 ,?

Find the number of element(s) which is/are present in group-II Ba, K, Ca, Cs, Rb., Na

In certain matters, lithium differs from other alkali metals; the main reason for this is

In the case of alkali metals, the covalent character decreases in the order:

Select the species in which the precipitate formed on adding NaOH further dissolves in excess of NaOH.

Which of the following oxides is not expected to react with sodium hydroxide?

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