Match the catalysts (Column I) with products (Column II).
Diborane reacts independenttly with and to produce, respectively:
The correct statement among the following is :
is pyramidal and less basic than .
nis planar and less basic than .
is planar and more basic than .
is pyramidal and more basic than .
The basic structural unit of feldspar, zeolites, mica, and asbestos is :
The noble gas that does NOT occur in the atmosphere is :
An organic compound 'A' is oxidized with followed by boiling with . The resultant solution is then treated with ammonium molybdate to yield a yellow precipitate.
Based on above observation, the element present in the given compound is :
The number of pentagons in and trigons (triangles) in white phosphorus, respectively, are :
The oxoacid of sulphur that does not contain bond between sulphur atoms is:
The amorphous form of silica is :
The correct statement among I to III regarding group 13 element oxide are ,
I. Boron trioxide is acidic.
II. Oxides of aluminium and gallium are amphoteric.
III. Oxides of indium and thallium are basic .
I and II only
I , II and III
I and III only
II and III only
The C - C bond length is maximum in:
The number of S=O and S−OH bonds present in peroxodisulphuric acid and pyrosulphuric acid respectively are :
(2 and 2) and (2 and 2)
(2 and 4) and (2 and 4)
(4 and 2) and (2 and 4)
(4 and 2) and (4 and 2)
A metal ‘M’ reacts with nitrogen gas to afford ‘M3N’. ‘M3N’ on heating at high temperature gives back ‘M’ and on reaction with water produces a gas ‘B’. Gas ‘B’ reacts with an aqueous solution of CuSO4 to form a deep blue compound. ‘M’ and ‘B’ respectively are :
Li and NH3
Ba and N2
Na and NH3
Al and N2
The chloride that CANNOT get hydrolysed is:
The relative stability of +1 oxidation state of group 13 elements follows the order :
Ga < Al < In < TI
Al < Ga < TI < In
Al < Ga < In < TI
TI < In < Ga < Al
The hydride that is NOT electron deficient is :
The number of 2-center-2-electron and 3-certer-2- electron bonds in respectively are :
4 and 2
2 and 4
The pair that contain two bonds in each of the oxoacids is