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Online Tests
Chemistry 9th Class English Medium Unit 8 Online Test MCQs With Answers
Question # 1
Which is the softtest metal.
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Zn
Ca
Na
Al
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Question # 2
Period nuber of
27
Al
13
is
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1
2
3
4
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Question # 3
When we move form left to right in a period, atomic number
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Decreases
Increases
First increases then decreases
None of the above
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Question # 4
Platinum alloyed with which metal is used as catalyst in automobiles as atalytic covertor.
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Gold
Rhodium
Palladium
Both a and b
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Question # 5
Which one of the following halongesn has lowest electronetivity
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Iodine
Chlorine
Fluorine
Bromine
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Question # 6
Actinide series starts after the element
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Actinium
Lanthanum
Osmum
Silver
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Question # 7
All transition elements belong to
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s and p block
d- block
f-block
d and f block
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Question # 8
When we mvoe from left to right in a period, ionization energy.
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No effect
Decreases
Increases
None of these
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Question # 9
The horizontal lines present in the priodic table are called.
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Groups
Periods
Both a and b
None of these
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Question # 10
17th group elements ae known as
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Alkaki metals
Alkaline earth metals
Noble gases
Halogens
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Question # 11
When we mvoe top to bottom in group, ionization energy.
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Increases
No effet
Decreases
None of these
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Question # 12
A yellow solid element exists in allotropic forms whic is also present in fossil fuel. Indicate the name
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Iodine
Carbon
Sulphur
Aluminium
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Question # 13
Electronegativity of oxygen is.
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3,1
3,3
3.4
3,2
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Question # 14
The amoutn of energy given out when an electron is added to an eatom is called.
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Electron affinity
Lattice energy
Ionization energy
Electronegativity
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Question # 15
Which halogen memebr exists in a liquid stte at room temperature
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Bromine
Chlorine
Fluroine
Iodine
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