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Chemistry 9th Class English Medium Online Test MCQs With Answers
Question # 1
All chemical reaction involves.
Choose an answer
Enzymes
Catalyst
Energy changes
All of these
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Question # 2
A complete reaction is in which
Choose an answer
Only 10% reactants covert into products
All the reactants covrt into products
All the reactants do no covrt into products
Half reactants covert into produts
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Question # 3
Which one of the example of colloid.
Choose an answer
Paints
Milk of magnesia
Jelly
None of these
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Question # 4
When an electronegative element combines with electrpositive element, the type of bonding. is.
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Covalent
Polar Covalent
Ionic
Coorinae Covalent
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Question # 5
A state of matter whose properties are between those of liqids and crystalline solids.
Choose an answer
Plasma
dark matter
Liquid crystal
Supercriticl fluid
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Question # 6
Uni of electron affinity is.
Choose an answer
k J mol-1
k jmol
pm
Newton
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Question # 7
Building block of all matter is.
Choose an answer
element
Compound
Mixture
Atom
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Question # 8
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 # 9
Why the gas starts coming out when you open a can of fizzy drink.
Choose an answer
Because gteh solubiliyt of the gas increases
Because the gas is dissolved under pressure hence it comes out when pressur eis decreased
Becaue the gas is insoluble in water
Because the solubility of hte gas decreases at high pressure.
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Question # 10
How many blocks are presnt in modern periodic table
Choose an answer
2
3
4
5
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Question # 11
How many elements are present in 1st period.
Choose an answer
1
2
8
18
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Question # 12
Which is released in anacrobic respiration.
Choose an answer
Stearic acid
Citric acid
Lactic acid
Amino Acid
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Question # 13
Which branch of chemistry helps to protectwater that bas been poisoned by soil.
Choose an answer
Organic chemistry
inorganic chemistry
Environmenal chemistry
Geochemistry
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