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Chemistry General Science Test Easy Mode MCQs With Answers
Question # 1
Carbon exists in ________________ allotropic forms.
Choose an answer
1
2
3
4
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Question # 2
In double covalent bond, every atom provides
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1 electrons
2 electrons
4 electrons
6 electrons
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Question # 3
The molecular mass of water is
Choose an answer
16 amu
14 amu
18 amu
20 amu
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Question # 4
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 # 5
Electron ________________ energy when they jump from low to higher level.
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Absorb
Radiate
Nothing
Nil
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Question # 6
The reaction of ionic compound is very ________________ in solution.
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Slow
Fast
Medium
Nil
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Question # 7
Atoms are arranged in ________________ structure in Bucky balls.
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Hollow
Cage
A & B
Nil
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Question # 8
The no.of elements in the first period is
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2
8
18
23
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Question # 9
The quantity of a matter in a body is called ____________
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Mass
Weight
Atom
Molecule
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Question # 10
Mark the incorrect statement about ionization energy:
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it is measured in Kjmol
-1
it is absorption of energy
it decreases in period
it decreases in a group
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Question # 11
A two component solution is called ____________ solutions.
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Binary
Once
Both
None
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Question # 12
A neutral salt is not composed of.
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Anion of base
Anion of acid
Metallic ion
Non metallic anion
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Question # 13
Chloroform is used for
Choose an answer
Anesthesia
Fever
Link
Toys
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Question # 14
Incinerator reduces solid waste into .
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Ash
Flue gas
Heat
All of them
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Question # 15
Maltose is commonly found in .
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Cereal
Milk
Cotton
Honey
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Question # 16
The number of carbon atoms present in petroleum ether.
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1-5
2-5
3-7
5-7
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Question # 17
High concentration of which metal clogs the fish gills.
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Zinc
Aluminium
Sodium
Copper
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Question # 18
Formula of Methyl alcohol
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CH
5
-OH
CH
3
-CH
2
-OH
All of them
None of these
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Question # 19
Incomplete combustion of alkanes produce.
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Carbon dixoide only
Carbon monoxide only
Carbon monoxide carbon black and water
Carbon dioxide and carbon black
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Question # 20
Mesophere extend forms 50 km to:
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50 km
12 km
60 km
85 km
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Question # 21
The organic compound used as drugs to control bleeding are.
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Vitamins
Proteins
Lipids
Glycerides
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Question # 22
Hard water can cause.
Choose an answer
Stomach disorder
Boiler blasts
Inefficiency of engine
All of them
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Question # 23
A solution have H+ ions concentration 1 x 10
-7
, its pH will
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Acidic
Basic
Neutral
Zero
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Question # 24
Dipole moment is defined as.
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Charge x distance
Charge x Debye
Charge x displacement
Charge x bond energy
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Question # 25
Haemoglobin is a Macro molecule and consists of approximately atoms.
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5000
10,000
68000
15000
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Question # 26
A pressure cooker reduces cooking time because.
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Heat is uniformly distributed
Boiling point of water rises
A large flame is used
Vapour pressure of liquid reduces
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Question # 27
Ionic solids are characterized by.
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Low melting points
High vapour pressures
Good conductivity in solid state
Solubility in polar solvents
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Question # 28
Rutherford's model of atom failed because
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The atom did not have a nucleus and electrons
It did not account for the attraction between protons and neutrons
It did not account for the stability of the atom
There is actually no space between the nucleus and the electrons
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Question # 29
Diamond is a bad conductor of electricity because
Choose an answer
It has a tight structure
It has a high density
There are no free electrons present in the crystal of diamond to conduct electronics
None of these
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Question # 30
If we want to change O
2
to O
2
-1
The electron is to be placed in
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Question # 31
Dipole-dipole forces are present among.
Choose an answer
Molecules of Iodine
Atoms of Neon i gaseous state
Chloroforms' molecules
CCl4 molecules
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Question # 32
Which is not a molecular ion.
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He+
CH3+
NH3-
CO+
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Question # 33
Borax has the chemical formula.
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KNO3
Na2B3O7.10H2O
Na2CO3
NaNO3
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Question # 34
Hydrolysis of benzene sulphonic acid with superheated steam or by boiling with dil HCl gives.
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Toluene
Benzene
Xylene
Chlorobenzene
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Question # 35
Disinfection of water by chlorine is done by the production of.
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NH2Cl
NCl2
HOCl
NHCl2
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Question # 36
Secondary alkyl halides are those in which halogen atom is attached with a carbon atom which is further attached to.
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One beta carbon
Two beta carbon
Three beta carbon
Four beta carbon
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Question # 37
The pH range of the acid rain is
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7-6-5
6.6-6
6-5.6
less than 5
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Question # 38
Which one of the following carbohydrates give blue colour with iodine.
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Glucose
fructose
Sucrose
Starch
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Question # 39
Aluminium does not corrode because.
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It is a semi metal
It is a silver shining metal
It does not react with O2
It forms a protective layer of Al2O3
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Question # 40
Which compound is least reactive
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CH3-CH3
CH2=CH2
CH=CH
C6H6
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Question # 41
Which is not a calcarious material.
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Lime
Clay
Marble
Marine shell
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Question # 42
Which compound is called universal solvent
Choose an answer
CH
3
OH
C
2
H
5
OH
CH
3
O CH
3
H
2
O
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Question # 43
The presence of a double bond in a compound is the sign of
Choose an answer
Saturation
Un-saturation
Substitution
None of these
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Question # 44
Which reagent will react with both aldehyde and ketones
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Grignard reagent
Tollen's reagent
Fehling's reagent
Benedict's reagent
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