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Chemistry General Science Test Easy Mode MCQs With Answers
Question # 1
Graphite is ___________
Choose an answer
Hard
Nil
Soft
Nil
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Question # 2
Concentration is ratio of:
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solvent to solute
solute to solution
solvent to solution
both a and b
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Question # 3
NaOH is prepared by ____________ of NaCL (aqueous).
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Electrolysis
Decomposition
A & B
Nil
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Question # 4
Elements are represented by chemical _________
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Abbreviation
Unit
Symbols
It can be represented
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Question # 5
Which pair of compounds is soluble?
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Ether and water
KCI and water
Benzene and water
Petrol and water
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Question # 6
Sodium has ________________ no. of protons.
Choose an answer
11
12
13
14
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Question # 7
Which of following does not belong to p-block?
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IIIA
IVA
VA
VIB
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Question # 8
The most common example of corrosion is:
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Chemical decay
Rusting of iron
Rusting of aluminum
Rusting of tin
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Question # 9
Which one is a solution?
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Carbonated drinks
Sugar
Benzene
Vineger
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Question # 10
Neuron was discovered by
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Sir Willium Crooks
Goldstein
James Chadwik
Neil Bohr
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Question # 11
Gases have ____________ shape.
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Fixed
Not Fixed
Nil
Both a & b
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Question # 12
The solid particle deposit on the filter paper during filtratin is called.
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Precipitates
Residue
Crystals
All of them
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Question # 13
Which one Ion is not present in salt.
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Metallic cation
Anion of Base
Anion of acid
None metallic anion
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Question # 14
Dehydration means removal of.
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Water
Halogen
Hydrogen
All above.
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Question # 15
Which gas is used to prepare ammonia?
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N
2
O
2
Cl
2
S
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Question # 16
Lactic acid founds in:
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Citrus fruits
Sour milk
Rancid Butter
Apple
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Question # 17
A strange bitter smell noticed near photocopiers is of:
Choose an answer
SO2
H2S
O2
O3
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Question # 18
Global warming causes rising of the sea level. The cause of global warming is.
Choose an answer
CO
2
gas.
SO
2
gas.
NO
2
gases.
O
3
gas.
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Question # 19
Monosaccharide consists of number of carbon atoms.
Choose an answer
2 to 4
4 to 8
3 to 9
5 to 10
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Question # 20
Water of crystallization is responsible for.
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Melting points of crystals2
Boiling point of crystal
Shape of crystal
Transition points of crystals
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Question # 21
Dehydrohalogenation take place in the presence of.
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Aqueous NaOH
Alcoholic KOH
Aqueous KOH
Alcoholic NaOH
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Question # 22
Eye inflammation is caused by the deficiency of vitamin.
Choose an answer
Vitamin D
Vitamin C
Vitamin B
Vitamin A
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Question # 23
During the process of crystallization, the hot saturated solution.
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Is cooled very slowly to get large sized crystals.
Is cooled at a moderate rate to get medium sized crystals
Is evaporated to get the crystals of the product.
Is mixed with an immiscible liquid to get the pure crystals of the product.
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Question # 24
NH3 shows a maximum boiling point among the hydrides of the group V elements due to.
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Very small size of nitrogen
Long pair of electrons present on nitrogen
Enhanced electronegative character of nitrogen
Pyramidal structure of NH3
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Question # 25
If strip of Cu metal is placed in the solution of FeSO4
Choose an answer
Cu will be precipitated out
Fe is precipitated out
Cu and Fe both dissolves
No reaction takes place
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Question # 26
Crystal to diamond is.
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Ionic
Molecular
Covalent
Metallic
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Question # 27
12.04 x 10
23
atoms of nitrogen gas is equal to.
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1 mol
2 mol
3 mol
4 mol
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Question # 28
Those elements whose electronegativities are 1.2 and 3.2, react to form
Choose an answer
Ionic bond
Covalent bond
Gaseous substance
Definiting a liquid substance
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Question # 29
The temperature which partially immiscible pair of liquid leads to the formation of a single phase in called.
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Transition temperature
Absolute temperature
Consulate temperature
Room temperature
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Question # 30
The molar volume of CO2 is maximum at.
Choose an answer
STP
127
o
C and 1 atm
0
o
C and 2 atm
273
o
C and 2 atm
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Question # 31
Borax has the chemical formula.
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KNO3
Na2B3O7.10H2O
Na2CO3
NaNO3
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Question # 32
With increases of 10 oC temperature the rate of reaction doubles. This increase in rate of reactions is due to.
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Decrease in activation energy of reaction
Decrease in the number of collisions between reactant molecules
Increase in activation energy of reactants
Increase in number of effective collisions
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Question # 33
Rate of a chemical reaction generally increase rapidly even for small increase in temperature because of rapid increase in the
Choose an answer
Collisions frequency
Activation energy
Average KE of molecules
Fraction of molecules with energies more than activation energy
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Question # 34
On heating aldehydes with Fehling's solution we get a precipitate whose colour is
Choose an answer
Pink
Black
Yellow
Brick red
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Question # 35
Which one of the following species is not an electrophile.
Choose an answer
HN3
Br
H+
BF3
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Question # 36
Among the following the compound that can be most readily suphonted is.
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Toluene
Benzene
Nitrobenzene
Chlorobenzene
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Question # 37
An ester can be prepared by the reaction of.
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Two alcohols
Alcohol and an aldehyde
An alcohol and an organic acid
an acid and a ketone
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Question # 38
Which property of triglycerides is used to determine its molecular mass.
Choose an answer
acid number
Saponification number
Iodine number
gold number
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Question # 39
Role of H2S in the given chemical reaction is H2S + I2--------------- 2HI+S
Choose an answer
Oxidising agent
Reducing agent
Dehydrating agent
As an acid
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Question # 40
Number of peptide bonds in tripeptide is
Choose an answer
1
2
3
4
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Question # 41
When hydrolyzed, protein yields.
Choose an answer
Fatty acid
Glycerol
Amino acid
Nucleosides
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Question # 42
Which one of the following products will be formed in Wurtz reaction when sodium metal reacts with ethyl chloride in anhydrous ether.
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Methane
Ethane
Propane
Butane
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Question # 43
Rectified spirit contains alcohol about
Choose an answer
80%
85%
90%
95%
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Question # 44
The IUPAC name of CH3OCH6H5 is
Choose an answer
Methyl phenyl ether
Methaoxy benzene
Phenoxy methane
methoxy phenyl
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