This page requires a JavaScript-enabled browser
Instructions on how to enable your browser are contained in the help file.
Chapter 3
Group 3A and Group 4A elements
Test - 2
1.
Borax (Na
2
B
4
O
7
) reacts with Hcl and H
2
So
4
to form ______________.
a) Na
2
S10
3
(Sodium Silicate)
b) Boric Acid
c) 2PbCO
3
d) CAMg
3
(S10
3
)
4
2.
Cupric bonates are __________ in colour.
a) Red
b) Blue
c) Black
d) White
3.
Al
2
O
3
layer is very useful and its thicunen is purposely increased in industry by an electrolytic process called _________.
a) Aluminum
b) 2PbCO
2
c) Antiseptic
d) Anodizing
4.
ZrS10
4
is chemical formula of ______________.
a) Quartz
b) Silicon
c) Zircon
d) Pigments
5.
Opal is hydra lied form of ______________. Solution of ___________ is used in chemical formula of Asbestos is __________.
a) Quartz
b) Boric Acid
c) Litharge
d) Semi
6.
Solution of ___________ is use din chemical garden for solubility of coloured salts.
a) CAMg
3
(S10
3
)
4
b) Na
2
S10
3
(Sodium Silicate)
c) +3, -3
d) 2PbCO
3
7.
The chemical formula of Asbestos in ___________.
a) Na
3
AlF
6
b) Na
2
S10
3
(Sodium Silicate)
c) CAMg
3
(S10
3
)
4
d) 2PbCO
3
8.
Germanium, selenium and silicon are used as ___________ conductors.
a) Quartz
b) Silicon
c) Semi
d) Boric Acid
This is more feedback!
This is the feedback!
