Which of the following oxides is amphoteric in character?

In which of the following arrangements the order is NOT according to the property indicated against it?

Which of the following statements in relation to the hydrogen atom is correct?

An ionic compound has a unit cell consisting of A ions at the corners of a cube and B ions on the centres of the faces of the cube. The empirical formula for this compound would be :

Tertiary alkyl halides are practically inert to substitution by SN2 mechanism because of

Elimination of bromine from 2-bromobutane results in the formation of-

Alkyl halides react with dialkyl copper reagents to give

The photon of hard gamma radiation knocks a proton out of $${}_{12}^{24}Mg$$ nucleus to form

A schematic plot of $$ln$$ $$K_{eq}$$ versus inverse of temperature for a reaction is shown below The reaction must be

t1/4 can be taken as the time taken for the concentration of a reactant to drop to 3 \over 4 of its initial value. If the rate constant for a first order reaction is K, the t1/4 can be written as

A reaction involving two different reactants can never be

Hydrogen bomb is based on the principle of

The disperse phase in colloidal iron (III) hydroxide and colloidal gold is positively and negatively charged, respectively, which of the following statements is NOT correct?

The volume of a colloidal particle, VC as compared to the volume of a solute particle in a true solution VS, could be

Acid catalyzed hydration of alkenes except ethene leads to the formation of

The best reagent to convert pent -3- en-2-ol into pent -3-en-2-one is

In silicon dioxide :

The structure of diborane (B2H6) contains :

Heating an aqueous solution of aluminium chloride to dryness will give :

The correct order of the thermal stability of hydrogen halides (H – X) is :