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- 1. Multiple Choice
The number of periods and groups in the
periodic table are______.
6,16
7,17
8,18
7,18
- 2. Multiple Choice
The basis of modern periodic law is______.
atomic number
atomic mass
isotopic mass
number of neutrons
- 3. Multiple Choice
_____ group contains the member of
halogen family.
17th
15th
18th
16th
- 4. Multiple Choice
_____ is a relative periodic property
atomic radii
ionic radii
electron affinity
electronegativity
- 5. Multiple Choice
Chemical formula of rust is ________.
FeO.xH2O
FeO4.xH2O
Fe2O3.xH2O
FeO
- 6. Multiple Choice
In the alumino thermic process the role of
Al is _____.
oxidizing agent
reducing agent
hydrogenating agent
sulphurising agent
- 7. Multiple Choice
The process of coating the surface of metal
with a thin layer of zinc is called______.
painting
thinning
galvanization
electroplating
- 8. Multiple Choice
Which of the following have inert gases
2 electrons in the outermost shell.
He
Ne
Ar
Kr
- 9. Multiple Choice
Neon shows zero electron affinity due to
_____.
stable arrangement of neutrons
stable configuration of electrons
reduced size
increased density
- 10. Multiple Choice
______ is an important metal to form
amalgam.
Ag
Hg
Mg
Al
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