1. Carborundum is
a) \[Al_{2}\left(SO_{4}\right)_{3}\]
b) \[Al_{2}O_{3}.2H_{2}O\]
c) \[AlCl_{3}\]
d) SiC
Explanation: Carborundum is SiC
2. Which one of the following is a correct set for \[SiO_{2}\] ?
a) Linear acidic
b) Linear,basic
c) Tetrahedral, acidic
d) Angular, basic
Explanation: SiO2 being oxide of non metal is acidic in nature and silicon is bonded to O atoms tetrahedrally. It has giant structure
3. A pseudo solid is
a) diamomd
b) glass
c) rock salt
d) \[CaCO_{3}\]
Explanation: Glass is pseudo solid
4. Pyrex glass is a mixture of
a) sodium borosilicate and aluminium borosilicate
b) sodium silicate and calcium silicate
c) sodium silicate and lead silicate
d) sodium silicate and aluminium borosilicate
Explanation: Pyrex glass is a mixture of sodium borosilicate and aluminium borosilicate
5. The variety of glass used in making lenses and prisms is
a) soda glass
b) borosilicate glass
c) flint glass
d) crooke’s glass
Explanation: Flint glass is used for optical (for making lenses) and prism
6. Cassiterite is an ore of
a) Mn
b) Ni
c) C
d) Sn
Explanation: Cassiterite is an ore of tin.
7. The shape of gaseous \[SnCl_{ 2}\] is
a) tetrahedral
b) linear
c) angular
d) T-shaped
Explanation:
8. Butter of tin is
a) \[SnCl_{4}.6H_{2}O\]
b) \[SnCl_{4}.4H_{2}O\]
c) \[SnCl_{4}.5H_{2}O\]
d) \[SnCl_{4}.2H_{2}O\]
Explanation: Butter of tin is SnCl4.5H2O
9. An alloy of Pb and Sn in equal proportion is called
a) pewter
b) type metal
c) solder
d) constantan
Explanation: solder
10. Red lead is
a) PbO
b) \[Pb_{3}O_{4}\]
c) \[PbO_{2}\]
d) \[Pb_{4}O_{3}\]
Explanation: Red lead is \[Pb_{3}O_{4}\]