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Chemistry General Science Test Easy Mode MCQs With Answers
Question # 1
Which one of the following is heterogeneous mixture?
Choose an answer
milk
ink
milk of magnesia
sugar solution
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Question # 2
________________ cannot be seen by naked eye.
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Matter
Molecules
Solid
Liquids
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Question # 3
The other name of modern periodic table is ________________ of periodic table.
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Long form
Simplified
Simplest
Nil
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Question # 4
"Atoms" means _________
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Divisible
Indivisible
Break
Nil
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Question # 5
1 torr = ?
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1 mm of Hg
1 atm
760 mm of Hg
1 pascal
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Question # 6
It is a triatomic molecule
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Sodium chloride
Water
Chalk
Glucose
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Question # 7
Transition elements are:
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all gases
all metals
all non-metals
all metalloids
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Question # 8
If the solute-solute forces are strong enough than those of solute- solvent force, The solute:
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dissolves readily
does not dissolve
dissolve slowly
dissolves and precipitates
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Question # 9
Metals lose their electrons easily because:
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They are electronegative
They have electron affinity
They are electropositive
Good conductors of heat
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Question # 10
The no.of electrons in the valence shell of noble gases is
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1
6
7
8
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Question # 11
Which is used for industrial manufacture of NaCI?
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Daniel cell
Down's cell
Nelson's cell
None of these
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Question # 12
Acetic acid is a weak acid because it.
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Is used in cooking and flavouring food.
Has very low pH
Is not fully ionized
Does not contain any hydrogen ions.
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Question # 13
The salts of which element are present in detergent that causes the rapid growth of algae in water bodies is.
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Phosphate
Calcium
Sodium
All of them
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Question # 14
Which is simplest alkane?
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CH
4
C
2
H
8
C
2
H
2
C
2
H
4
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Question # 15
Which is the main component of natrual gas.
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Methane
Ethane
Propane
Charcoal
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Question # 16
The organic compound used as drugs to control bleeding are.
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Vitamins
Proteins
Lipids
Glycerides
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Question # 17
The coal in which the percentage of carbon is 60%
Choose an answer
Peat
Lignite
Bituminous
Anthracit
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Question # 18
For which reaction Kf is the rate constant?
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Forward reaction
Backward reaction
Upward reaction
Downward reaction
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Question # 19
Vital force theory was rejected by.
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Jabir Bin Hayan
Drawin
Wohler
Berzellius
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Question # 20
Which acid is used for etching designs on copper plates?
Choose an answer
H
2
SO
4
HNO
3
HCl
CH
3
COOH
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Question # 21
A pollutant is a waste material that pollutes.
Choose an answer
Air
Water
Soil
All of them
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Question # 22
Percentage of carbon in peat is.
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50%
60%
70%
80%
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Question # 23
Solvent extraction method is particularly useful technique for separation when the product to be separated is
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Non-volatile or thermally unstable
Volatile or thermally unstable
Non-volatile or thermally stable
Volatile or unstable
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Question # 24
The molar volume of CO
2
is maximum at
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STP (0°C and 1 atm)
127° C and 1 atm
0°C and 2 atm
273°C and 2 atm
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Question # 25
Which statement is correct about solubility product constant.
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It is applicable at highly soluble substances.
Value of Kap is independent of temperature
It is used for homogeneous aquarium system
It can be used to predict that precipitation will take place or not by combining two ions
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Question # 26
Which liquid has low boiling point with.
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Less intermolecular force and higher V.P
Greater intermolecular forces and low V.P
Bigger size and greater polarizability
High hydrogen bonding in it
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Question # 27
Which of the following statement is contrary to the first law of thermodynamics
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An equivalent amount of heart energy can neither be created nor destroyed
One form of energy can be transferred into an equivalent amount of other kinds of energy
In an adiabatic process, the work done is independent of its path
Continuous production of mechanical work without supplying an equivalent is amount of heat possible
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Question # 28
Which one of the following has highest pH
Choose an answer
Distilled water
1 M NH4OH
1 M NaOH
Water saturated with chlorine gas
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Question # 29
The cathodic reaction in the electrolysis of dil H2SO4, with pt electrode sis.
Choose an answer
Reduction
Oxidation
Both oxidation and reduction
Neither oxidation nor reduction
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Question # 30
In Daniel cell, if salt bridge is removed between the two half cells, the voltage.
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Drops to zero
Does not changes
Increases gradually
Increases rapidly
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Question # 31
Which of the following precautions in necessary for smooth filtration
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The filter paper should be of big size
The tip of funnel should not touch the side of the beaker
The stem of the funnel should be very small
The stem of he funnel should remain continuously full of liquid
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Question # 32
Which of the following statements is not correct regarding bonding molecular orbitals
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Bonding molecular orbitals possess less energy than atomic orbitals from which they are formed
Bonding molecular orbitals have low electron density between the two nuclei
Every electron in the bonding molecular orbitals contributes to the attraction between atoms
Bonding molecular orbitals are formed when the electron waves undergo constructive interference
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Question # 33
Depression of freezing point method is used for determination of molar masses of
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Electrolytes
Non-volatile solids
Volatile solids
Volatile liquids
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Question # 34
What criteria did Mendeleev use in arranging his periodic table.
Choose an answer
Atomic mass
Atomic number
Mass number
Density
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Question # 35
To which class of organic compounds soap belongs.
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Ether
Ketones
Aldehyde
Salt of an organic acid
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Question # 36
Acetone reacts with HCN to form cyanohydrin it is an example of
Choose an answer
Electrophilic addition
Electrophilic substitution
Nucleophilic addition
Nucleophilic subtitution
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Question # 37
What is Glacial acetic acid
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Pure acetic acid
95% acetic acid
a mixture of acetic acid and glycerol
Vinegar
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Question # 38
Aromatic compounds burns with sooty flame because.
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They have high percentage of hydrogen
The have a right structure
The have high percentage of carbon
The resist reaction with air
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Question # 39
Which acid is used in the manufacture of synthetic fibre
Choose an answer
Formic acid
Oxalic acid
Carbonic acid
Acetic acid
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Question # 40
Which one of the following macromolecules contains carbon, hydrogen, nitrogen and oxygen in it.
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Nylon-6,6
Terylene
Starch
Bakelite
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Question # 41
Which hydride is intermediate in nature.
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NaH
BeH2
NH3
HCl
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Question # 42
Which raw material is used for manufacture eof HNO3 by Birkland eyed process
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NH3 and CO2
Air
Air and gypsum
Lime stone and urea
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Question # 43
Ortho boric acid on strong beating gives.
Choose an answer
Borax
Boron oxide
Metaboric acid
Tetraboric acid
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Question # 44
Which element reacts with alkali and H2 gas is produced.
Choose an answer
Be
Mg
Ca
Sr
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