Name the type of the structure of silicate in which one oxygen atom of [SiO4]4- is
shared?
1. Sheet silicate
2. Pyrosilicate
3. three dimensional silicate
4. Linear chain silicate
Which one of the following anions is present in chain structure silicates?
(a) (b)
(c) (d)
Borax is converted into crystalline boron by the following steps:
X and Y are respectively :
1. HCl, Mg
2. HCl, C
3. C, Al
4. HCl, Al
The dissolution of in a solution of results in the formation of -
1.
2.
3.
4.
It is because inability of ns2 electrons of the valence shell to participate in bonding that
1. Sn2+ is reducing while Pb4+ is oxidising agent
2. Sn2+ is oxidising while Pb4+ is reducing agent
3. Sn2+ and Pb2+ are both oxidising and reducing agent
4. Sn4+ is reducing while Pb4+ is oxidising agent
The incorrect statement among the following regarding borax is-
1. It is a useful primary standard for titrating against acids.
2. One molecule of borax contains 4 bonds.
3. Aqueous solution of borax can be used as a buffer.
4. It is made up of two triangular units and two tetrahedral units.
How can this reaction is made to proceed in forward direction?
(a) addition of cis1, 2 diol (b) addition of borax
(c) addition of trans1, 2 diol (d) addition of
Which of the following cation can not give borax bead test?
(a) (b)
(c) (d)
The species among the following that does not exist is-
1.
2.
3.
4.
The incorrect statement regarding above reactions is :
(a) Al shows amphoteric character
(b) Gas 'P' and 'Q' are different
(d) Both X and Y are water soluble
(d) Gas Q is inflammable