Lead pipes are corroded by:
(1)
(2) HCl
(3)
(4) Pure water
Compound of lead used in match industry is:
(1) PbO
(2)
(3)
(4) None of these
Lead may be replaced from its salt solution by:
(1) Zn
(2) Au
(3) Ag
(4) Cu
Litharge is not commonly used in:
1. manufacture of special glasses
2. glazing pottery
3. preparing paints
4. lead storage battery
When reacts with conc. , the gas evolved in
(1)
(2)
(3)
(4)
The product formed on heating Pb(NO3)2
1.
2. Pb(NO2
3.
4.
Aluminium chloride in acidified aqueous solution forms a complex 'A'.
The formula of A and hybridisation state of Al in 'A' is respectively:
1. [Al(H2O)6]3+, sp3d2
2. [Al(H2O)4]3+, sp3
3. [Al(H2O)4]3+, dsp2
4. [Al(H2O)]3+, d2sp3
The compound among the following that used in cosmetic surgery is:
1. Silica
2. Silicates
3. Silicones
4. Zeolites
Which is not used as pigment in paints?
(1) Lead dioxide
(2) White lead
(3) Lead chromate
(4)
The amphoteric oxide among the following is -
1. | \(\mathrm{CO}_2 \) | 2. | \(\mathrm{PbO}_2 \) |
3. | \(\mathrm{SiO}_2 \) | 4. | \(\mathrm{SeO}_2\) |