Which of the following oxide of iron would be obtained or prolonged reaction of iron with steam
Anonymous Quiz
24%
Feo
49%
Fe2O3
15%
Fe3O4
12%
Fe2O
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Which metal can be displaced by copper from its salt solution
Anonymous Quiz
25%
Silver
51%
Zinc
20%
Iron
4%
Iron
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The metal which have very low melting point are
Anonymous Quiz
37%
Gallium and caseium
25%
Gallium and sodium
15%
Caseuim and pottasium
23%
Sodium and potassium
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The soln of which of the following compund s will not conduct electricty
Anonymous Quiz
32%
Ccl4
33%
Nacl
18%
Cacl2
17%
Kbr
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Silver article become black on prolonged exposued. To air this is due to the formation of
Anonymous Quiz
37%
Ag3N
42%
Ag3O
16%
Ag2s
5%
Ag3n
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Which one of the following would be displaced from the soln of its salt by other three metal
Anonymous Quiz
31%
Mg
34%
Ag
24%
Zn
11%
Cu
👍1
Electrical wire have. A coating of an insulating material the material generally used is
Anonymous Quiz
18%
Sulphur
32%
Graphite
35%
Pvc
15%
All can be used
👍1
Metal such as sodium and potassium are kept immeresed in
Anonymous Quiz
49%
Kerosene oil
20%
Water
22%
Carbon di sulphide
9%
Alchol
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Which of the following oxides will not react with dilute sulphuric acid
Anonymous Quiz
39%
Co2
28%
Mgo
19%
CUO
14%
NA2O
👍2
👍3
Which instrument is used for record the electrical change during herat beat
Anonymous Quiz
33%
Electroheartbeat
56%
Electrocardiograph
6%
Electromechanical
5%
Electroplate
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👍2
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