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Chemistry 9th Class English Medium Online Test MCQs With Answers
Question # 1
A compound with chemicla formula Na
2
CX
3
has formula mass 106 ami. Atomicmass of the elemetn X is.
Choose an answer
16
23
12
106
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Question # 2
Nitrogen molecule contains.
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Polar covalent bond
Triple Covalent bond
Double covalent bond
Single covalent bond
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Question # 3
Which is strongest oxidizing agent.
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Cholorine
Iodine
Fluorine
Bromine
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Question # 4
Chlorine has two isotopes, both of which have
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Same mass Number
Same number of electrons
Same number of neurtons
Different number of protons
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Question # 5
Pure alkalis metals can be cut siply by knife but iron cannot bccause of alkali meals have
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Non metalic bonding
Strong metallic bonding
Weak metallic bonding
Moderate metqllic bonding
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Question # 6
Number of peiod in the periodic table are.
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7
8
5
16
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Question # 7
Which are good conductor of heat and electricity
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Metals
Non metals
Metalloids
All of these
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Question # 8
Empricial formula of sand is.
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SiO2
SiO3
SiO4
SiO
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Question # 9
How many electrons can be accommodated at the msot in the third shell of the elements.
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8
12
10
18
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Question # 10
Mark the icorrect statement about ionization energy.
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It is measured in kJmol-1
It is absorption of energy
It decreased in a period
It decrese in a group
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Question # 11
How many electrons can be accommodated at the most in the third shell of the elements.
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8
10
18
32
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Question # 12
The compund formed by oppoite charges are known as.
Choose an answer
Metallic solids
Ionic compounds
Non-polar Covalent compound
None of the above
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