with proton to form water molecule d) accepts OH - from water ,releasing proton. . Which among the following is not a borane? a) B H b) B H c) B H d) none of these .
Which of the following metals has the largest abundance in the earth’s crust? a) Aluminium b) Calcium c) Magnesium d) Sodium . In diborane, the number of electrons that accounts for banana bonds is a) six b) two c) four d) three . The element that does not show catenation among the following p-block elements is a) Carbon b) silicon c) Lead d) germanium .
Carbon atoms in fullerene with formula C have a) sp hybridised b) sp hybridised c) sp hybridised d) partially sp and partially sp hybridised . Oxidation state of carbon in its hydrides a) + b) - c) + d) + . The basic structural unit of silicates is (NEET) a) SiO b) SiO c) SiO d) SiO . The repeating unit in silicone is a) SiO b) Si R R c) Si R R d) Si R R - - - - .
Which of these is not a monomer for a high molecular mass silicone polymer? a) Me SiCl b) PhSiCl c) MeSiCl d) Me SiCl . Which of the following is not sp hybridised? a) Graphite b) graphene c) Fullerene d) dry ice .
The geometry at which carbon atom in diamond are bonded to each other is a) Tetrahedral b) hexagonal c) Octahedral d) none of these . Which of the following statements is not correct? a) Beryl is a cyclic silicate b) Mg SiO is an orthosilicate c) SiO − is the basic structural unit of silicates d) Feldspar is not aluminosilicate . Match items in column - I with the items of column – II and assign the correct code.
Column-I Column-II Borazole B(OH) B Boric acid B N H C Quartz Na