The incorrect statement among the following is -
1. is amphoteric
2. is more stable than
3. is weakly acidic
4. GeCl4 + 2HCl ⇄ H2[GeCl6]
The correct statement regarding polymeric silicon dioxide is -
1. | Each silicon atom is surrounded by four oxygen atoms and each oxygen atom is bonded to two silicon atoms. |
2. | Each silicon atom is surrounded by two oxygen atoms and each oxygen atom is bonded to two silicon atoms. |
3. | Silicon atom is bonded to two oxygen atoms. |
4. | These are double bonds between silicon and oxygen atoms. |
The correct statement among the following is :
1. | Sn2+ is an oxidizing agent while Pb4+ is a reducing agent. |
2. | Sn2+ and Pb2+ both are oxidizing agents. |
3. | Sn4+ is a reducing agent while Pb4+ is an oxidizing agent. |
4. | Sn2+ is a reducing agent while Pb4+ is an oxidizing agent. |
The correct order of atomic radii of the group 13 elements is-
1. B < Al < In < Ga < Tl
2. B < Al < Ga < In < Tl
3. B < Ga < Al < Tl < In
4. B < Ga < Al < In < Tl
The stability of the +1 oxidation state increases in the sequence:
1. Al <Ga<In<Tl
2. Tl<In<Ga<Al
3. In<Tl<Ga<Al
4. Ga<In<Al<Tl
Borax bead test is responded by:
1. Divalent metals
2. Heavy metals
3. Light metals
4. Metal which forms coloured metaborates
Aluminium becomes passive in nitric acid because it-
1. Is a noble metal
2. Forms a thin film of oxide
3. Has a positive reduction potential
4. None of the above
on hydrolysis gives -
1.
2.
3.
4.
Compound (A) is -
1. | A linear silicone | 2. | A chlorosilane |
3. | A linear silane | 4. | A network silane |
The incorrect statement among the following is -
1. is more stable than
2. is less stable than but is more stable than
3. is less stable than
4. Pb(II) is a good reducing agent while Sn(II) is not