The INCORRECT statement is :

The correct sequence of thermal stability of the following carbonates is :

A hydrated solid X on heating initially gives a monohydrated compound Y. Y upon heating above 373 K leads to an anhydrous white powder Z. X and Z, respectively, are :

The alloy used in the construction of aircrafts is :

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

Magnisium powder burns in air to give :

The correct order of hydration enthapies of alkali metal ions is :

The reaction that does NOT define calcination is :

A metal on combustion in excess air forms X. X upon hydrolysis with water yields H2O2 and O2 along with another product. The metal is :

The alkaline earth metal nitrate that does not crystallise with water molecules, is :

The metal that forms nitride by reacting directly with N2 of air, is :

The metal used for marking X–ray tube window is :

Sodium metal on dissolution in liquid ammonia gives a deep blue solution due to the formation of :

The amphoteric hydroxide is :

Match the following items in column I with the corresponding items in column II. .tg {border-collapse:collapse;border-spacing:0;width:100%} .tg td{font-family:Arial, sans-serif;font-size:14px;padding:10px 5px;border-style:solid;border-width:1px;overflow:hidden;word-break:normal;border-color:black;} .tg th{font-family:Arial, sans-serif;font-size:14px;font-weight:normal;padding:10px 5px;border-style:solid;border-width:1px;overflow:hidden;word-break:normal;border-color:black;} .tg .tg-nhda{font-size:22px;border-color:inherit;text-align:center} .tg .tg-0xlv{font-weight:bold;font-size:22px;border-color:inherit;text-align:center} .tg .tg-9d8n{font-size:22px;border-color:inherit;text-align:center;vertical-align:top} Item I Item II (i) Na2CO3.10H2O (A) Portland cement ingredient (ii) Mg(HCO3)2 (B) Castner-Kellner process (iii) NaOH (C) Solvay process (iv) Ca3Al2O6 (D) Temporary hardness

The IUPAC name for the following compound is :

The increasing order of the pKb of the following compound is :

The increasing order of nucleophilicity of the following nucleophiles is : (a) CH3CO2$$-$$ (b) H2O (c) CH3SO3$$-$$ (d) $$\stackrel{-}{O}H$$

Which of these factors does not govern the stability of a conformation in acyclic compounds?

In chromatography, which of the following statements is incorrect for Rf ?