s-Block Elements

Which one of the following reactions does NOT belong to "Lassaigne's test"?

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) : Lithium and beryllium unlike their other respective group members form compounds with pronounced ionic character.
Rea...

Weight (g) of two moles of the organic compound, which is obtained by heating sodium ethanoate with sodium hydroxide in presence of calcium oxide is :

Which one of the following statements is correct?

Given below are two statements : one is labelled as
Assertion \(\mathbf{A}\) and the other is labelled as Reason \(\mathbf{R}\) :
Assertion A : Metallic sodium dissolves in liquid ammonia giving a deep blue solution, which is paramagnetic.
...

Which one of the following is not a calcination reaction?

CaCl2 and Ca(OCl)2 are components of

The element used for welding metals with high melting points is

Match List - I with List - II

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Identify the incorrect statement from the following

The structures of beryllium chloride in solid state and vapour phase, are :

Among the following alkaline earth metal halides, one which is covalent and soluble in organic solvents is :

HCl was passed through A solution of CaCl2, MgCl2 and NaCl. Which of the following compound(s) crystallize(s)?

The following metal ion activities many enzymes, participates in the oxidation of glucose to produce ATP and with Na, is responsible for the transmission of nerve signals.

Enzymes that utilize ATP is phosphate transfer require an alkaline earth metal (M) as the cofactor. M is

Which of the following is an amphoteric hydroxide?

Among CaH2
, BeH2
, BaH2
, the order of ionic
character is

Magnesium reacts with an element (X) to form
an ionic compound. If the ground state
electronic configuration of (X) is 1s22s22p3,
the simplest formula for this compound is

Ionic mobility of which of the following alkali metal ions is lowest when aqueous solution of their salts are put under an electric field?

The suspension of slaked lime in water is known as

In context with beryllium, which one of the following statements is incorrect?

Which of the following statments is false?

The product obtained as a result of a reaction of nitrogen with CaC2 is

The function of ''Sodium pump'' is a biological process operating in each and every cell of all animals. Which of the following biologically important ions is also a constituent of this pump?

Solubility of the alkaline earth metal sulphates in water decreases in the sequence

20.0 g of a magnesium carbonate sample decomposes on heating to give carbon dioxide and 8.0 g magnesium oxide. What will be the percentage purity of magnesium carbonate in the sample?
(At. wt. of Mg = 24)

On heating which of the following releases CO2 most easily?

In Castner-Kellner cell for production of sodium hydroxide

The ease of adsorption of the hydrated alkali metal ions on an ion-exchange resins follows the order :

Which one of the alkali metals, forms only, the normal oxide, M2O on heating in air?

Which one of the following is present as an active ingredient in bleaching powder for bleaching action?

Which of the following compounds has the lowest melting point?

Match List-I with List-II for the compositions of substances and select the correct answer using the code given above.

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Which of the following alkaline earth metal sulphates has hydration enthalpy higher than the lattice enthalpy?

Property of the alkaline earth metals that increases with their atomic number

Which one of the following compounds is a peroxide?

The compound A on heating gives a colourless gas and a residue that is dissolved in water to obtain B. Excess of CO2 is bubbled through aqueous solution of B, C is formed which is recovered in the solid form. Solid C on gentle heating gives...

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

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

The alkali metals form salt-like hydrides by the direct synthesis at elevated temperature. The thermal stability of these hydrides decreases in which of the following orders?

Equimolar solutions of the following were prepared in water separately. Which one of the solutions will record the highest pH?

The sequence of ionic mobility in aqueous solution is

The correct order of increasing thermal stability of K2CO3, MgCO3, CaCO3 and BeCO3 is

In which of the following the hydration energy is higher than the lattice energy?

The correct order of the mobility of the alkali metal ions in aqueous solution is

A solid compound X on heating gives CO2 gas and a residue. The residue mixed with water forms Y. On passing an excess of CO2 through Y in water, a clear solution Z is obtained. On boiling Z, compound X is reformed. The compound X is

In which of the following processes, fused sodium hydroxide is electrolysed at a 330oC temperature for extraction of sodium?