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Which is the allotropic form(s) of carbon?
Fullerenes Graphite Diamond All A, B, and C Submitted by :- Muhammad Nawaz
Which of the mentioned lead oxide is helpful and used in lead storage battery?
Pb3O4 2PbO PbO2 PbO PbO2 Submitted by :- Muhammad Nawaz
Which of the mentioned elements is helpful and used in solar cells?
Sn Ti Si Ge Submitted by :- Muhammad Nawaz
Dry ice is ______.
Solid CO Solid SO₂ Solid NH3 Solid CO₂ Submitted by :- Muhammad Nawaz
Blue color of glass is due to the presence of which of the following?
Mn (II) Chromium (III) Iron (III) Cobalt (II) Submitted by :- Muhammad Nawaz
Which of the mentioned compounds would be most ionic in character?
PbCl4 PbCl2 SnCl4 SnCl2 Submitted by :- Muhammad Nawaz
Graphite is a good conductor of electricity, as it ____
Has sp-hybridized carbon atoms Is crystalline Has free electrons Has free atoms Submitted by :- Muhammad Nawaz
Which of the mentioned are helpful and used as water repellent?
Carbides Silicon Silicones Silicates Submitted by :- Muhammad Nawaz
What forces are present between layers in graphite?
van der Waals forces Covalent forces Dipolar forces Ionic forces Submitted by :- Muhammad Nawaz
The penultimate shell of carbon contains electrons ____.
s2p6d8 s2p6 s2p6d10 s2 Submitted by :- Muhammad Nawaz