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Chemistry 9th Class English Medium Online Test MCQs With Answers
Question # 1
What conditon Should be met for the reversible reactio to achieve the state of equilibrium.
Choose an answer
The concentratio of all the reactants and the prodduct should become constant
all the reactants should be converted into the product
50% of the reactant shuld be converted into prodcuts.
One of the product should be removed from the reaction mixture.
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Question # 2
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 # 3
Whcih branches of chemistry deals with the changes that occur in atomic nuclei.
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Environmental chemistry
nuclear chemistry
Astrochemistry
Bio chemistry
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Question # 4
Covalent Bond involves the
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Sharing of electrons
Repulsion of electrons
Acceptance of electrons
Donation of electrons
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Question # 5
John Dalton put forward his atomic theory.
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1800
1803
1805
1903
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Question # 6
Which molecule contains a single vovalent bond.
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CH4
C2H4
C2H2
O2
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Question # 7
Which element is capable of forming all the three types of bonds, covalent coordinate covalent or ionic.
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Carbon
Silicon
Magnesium
Oxygen
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Question # 8
A bond formed by the mutual sharing an electron pair is called.
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Ionic bond
Metallic bond
Covalent bond
Coordinate covalent bond
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Question # 9
Number of electronsin nitrogen molecule is.
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2
4
6
8
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Question # 10
Whic period of the moden periodic table is condidered as incommplete period.
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5th
4th
7th
6th
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Question # 11
Which is used to manufacture soap?
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NH4OH
Ca(OH)2
NaOH
Mg(OH)2
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Question # 12
N-shell contains number of subshells.
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1
3
4
2
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Question # 13
How many atom of carbon are present in one molecule of glucose.
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11
22
12
6
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