Chemistry Online Quiz Test 03

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Chemistry Online Quizzes

Free Chemistry Quiz Test 03 test contains multiple-choice questions with answers for competitive exam preparation. We have provided Free Chemistry online quizzes below which include questions related to different topics.

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Free Chemistry Quiz Test 03

When a compressed gas is allowed to pass through a nozzle of a jet into a region of low pressure it produces?
(A) Fusion
(B) Cooling
(C) Expansion
(D) Vaporization

Answer
Cooling

Which of the following at ordinary temperature the most nearly ideal gases are?
(A) N2
(B) He
(C) H2
(D) All of these

Answer
All of these

Which of the following gas diffuses more rapidly?
(A) H2
(B) O2
(C) So3
(D) NH3

Answer
H2

What is the Vapor Pressure of water at different temperature?
(A) Low
(B) High
(C) Same
(D) Different

Answer
Different

Which of the following liquid is more volatile?
(A) Benzene
(B) Water
(C) Honey
(D) None of these

Answer
Benzene

Which of the liquid has higher boiling point than other liquids?
(A) HCl
(B) HBr
(C) Br2
(D) H2O

Answer
H2O

Which of the following liquid has high vapor pressure than other liquids?
(A) CH3OH
(B) H2O
(C) C2H5OH
(D) Ether

Answer
Ether

Which of the following is not a macromolecule ?
(A) sand
(B) haemoglobin
(C) diamond
(D) maltose

Answer
maltose

Percentage of calcium in calcium carbonate is____?
(A) 80%
(B) 30%
(C) 40%
(D) 20%

Answer
40%

How many isotopes have odd atomic number ?
(A) 154
(B) 280
(C) 86
(D) 300

Answer
86

The number of moles of CO2 which contains 16 g of oxygen is_______?
(A) 0.25
(B) 0.5
(C) 0.75
(D) 1

Answer
0.5

The volume occupied by 2.8 g of N2 at STP_____________?
(A) 2.24 dm3
(B) 22.4 dm3
(C) 1.12 dm3
(D) 112 dm3

Answer
2.24 dm3

Empirical formula of chloroform is _______________?
(A) CH2 C12
(B) CH3C1
(C) CC14
(D) CHCL3

Answer
CHCL3

The number of isotopes of elements with even mass number and even atomic number are _________?
(A) 280
(B) 300
(C) 154
(D) 54

Answer
154

Which of the following terms is not used for ionic compound ?
(A) formula unit
(B) empirical formula
(C) molecular formula
(D) formula mass

Answer
molecular formula

Which one of the following has the maximum number of isotopes ?
(A) oxygen
(B) carbon
(C) tin
(D) chlorine

Answer
tin

Bolometer is used to measure
(A) Frequency
(B) Temperature
(C) Wavelength
(D) Velocity

Answer
Velocity

A jet engine works on the principle of conservation of
(A) Linear momentum
(B) Angular momentum
(C) Energy Mass
(D) Mass Velocity

Answer
Linear momentum

What is the scale used for measuring the intensity of the earthquake?
(A) Metric Scale
(B) Quake Scale
(C) Richter Scale
(D) Epicentre Scale

Answer
Richter Scale

If a lift is going up with acceleration, the apparent weight of a body is
(A) More or less the true weight
(B) Less than the true weight
(C) Equal to the true weight
(D) More than the true weight

Answer
More than the true weight

The electric motor converts
(A) Electrical energy into mechanical energy
(B) Mechanical energy into electrical energy
(C) Electrical energy into light energy
(D) None of these

Answer
Electrical energy into mechanical energy

Energy possessed by a body in motion is called
(A) Kinetic Energy
(B) Potential Energy
(C) Both A and B
(D) None of these

Answer
Kinetic Energy

What is the unit of Astronomical Distance ?
(A) Light year
(B) Angstrom
(C) Weber
(D) Lux

Answer
Light year

Which law is also called the law of inertia ?
(A) Newton s first law
(B) Newton s Second Law
(C) Newton s Third Law
(D) None of these

Answer
Newton s first law

The rotational effect of a force on a body about an axis of rotation is described in terms of the
(A) Centre of gravity
(B) Centripetal force
(C) Centrifugal force
(D) Moment of force

Answer
Moment of force

Elecronegativity is the measure of
(A) Metallic character
(B) Non-metallic character
(C) Basic Character
(D) None of these

Answer
Non-metallic character

With the increase of pressure, the boiling point of any substance
(A) Increases
(B) Decreases
(C) Remains Same
(D) Becomes zero

Answer
Increases

A man presses more weight on earth at
(A) Sitting position
(B) Standing Position
(C) Lying Position
(D) None of these

Answer
Standing Position

Which of the following is the main ingredient of cement?
(A) Limestone
(B) Silica Clay
(C) Gypsum
(D) Ash

Answer
Gypsum

Nylon is prepared from
(A) Adipic acid and hexametheylene diamine
(B) Ethylene glycol and nitric acid
(C) Hexametheylene diamine and phthalic acid
(D) Ethylene clycol and adipic acid

Answer
Adipic acid and hexametheylene diamine

Mass number of a nucleus is
(A) the sum of the number of neutrons and protons
(B) always more than the atomic weight
(C) always less than its atomic number
(D) None of these

Answer
the sum of the number of neutrons and protons

Due to rusting the weight of iron
(A) decreases
(B) remains the same
(C) increases
(D) uncertain

Answer
increases

When water is added to anhydrous white copper sulphate, the color will change to
(A) Yello
(B) Green
(C) Blue
(D) Red

Answer
Blue

Atmosphere contains dust particles, salt grains, pollen grains, smoke, etc. which are collecctively known as
(A) Water vapour
(B) Ozone
(C) Aerosols
(D) CFC

Answer
Aerosols

When TEL (Tera Ethyl Lead) is added to petrol
(A) It increases the B.P of petrol
(B) Increases the aniti-knocking rating
(C) Decreases the B.P of petrol
(D) Decreased the ani-kncking rating

Answer
Increases the aniti-knocking rating

The macro-nutrient provided by inorganic fertilization are
(A) C, Fe, B
(B) N, P, K
(C) C, N, P
(D) Mg, Zn, Fe

Answer
N, P, K

Which one of the following is not used to dope a semiconductor ?
(A) Al
(B) B
(C) In
(D) Au

Answer
Au

On wound ________ fight foreign particles, like bacteria.
(A) White Blood Cells
(B) Red Blood Cells
(C) Platelets
(D) Plasma

Answer
White Blood Cells

Cilia are produced from
(A) Mitochondria
(B) Cell-Membrane
(C) Centriole
(D) Cytoplasm

Answer
Centriole

Which of the following has the highest entropy?
(A) Hydrogen
(B) Diamond
(C) Liquid Nitrogen
(D) Mercury

Answer
Hydrogen

Neutral solution has pH value of
(A) 3
(B) 5
(C) 7
(D) 14

Answer
7

Butyl chloride gives possible isomers ?
(A) 2
(B) 3
(C) 5
(D) 4

Answer
4

Metallic crystals are soluble in
(A) Polar solvent
(B) Non polar solvent
(C) Fused metal
(D) None of these

Answer
Fused metal

Which of the following properties prove that cathode rays are material in nature
(A) they cast shadow
(B) they possess momentum
(C) they are negatively charged
(D) all of the above

Answer
they possess momentum

Paramagnetic behaviour of substance is measured by a balance called
(A) Analytical balance
(B) Guoys balance
(C) Electrical balance
(D) Single beam balance

Answer
Guoys balance

When methl iodide and ethyl iodide are treated with sodium metal possible major products are obtained ?
(A) 1
(B) 2
(C) 3
(D) 4

Answer
4

Which of the following is mineral fiber ?
(A) Teflon
(B) asbestos
(C) saran
(D) acrylic

Answer
asbestos

The hardest of the following solids is
(A) sodium
(B) diamond
(C) graphite
(D) magnesium

Answer
diamond

Which of the solid does not contain covalent bond
(A) copper
(B) ice
(C) diamond
(D) graphite

Answer
copper

The balanced chemical equation for the reaction which occurs when Be is added to water is
(A) Be+2H2O?Be (OH)2+H2
(B) Be+H2O?Be (OH)2+H2
(C) Be+H2O?[Be (OH)4]+2+H2
(D) no reaction

Answer
no reaction

Which of the following theories is superior to others
(A) VSEPR
(B) VBT
(C) MOT
(D) None of these

Answer
MOT

Which of the following is not characteristics of reversible reaction
(A) whole amount of reactant does not change into product
(B) chemical equilibrium is established
(C) a catalyst changes the direction of reaction
(D) None of these

Answer
a catalyst changes the direction of reaction

1 mole of electron has mass in microgram
(A) 1.008 x 10-3
(B) 5.5 x 10-4
(C) 1.84 x 10-4
(D) 1.673 x 10-3

Answer
5.5 x 10-4

The use of antifreeze in the automobile radiator is an important application of
(A) constitutive property
(B) additive property
(C) colligative property
(D) intrinsic property

Answer
colligative property

At which electrode the reduction of the solution is occurring in Al-Ag cell
(A) Au
(B) Ag
(C) Both A & B
(D) None of these

Answer
Ag

In which of the following type of reactions energy of reactant is greater than energy of product
(A) endothermic
(B) exothermic
(C) unpredictable
(D) same

Answer
exothermic

Which of following metals can be displaced by all other metals from its solution ?
(A) Ag
(B) Au
(C) Cu
(D) None of these

Answer
Au

Across short period the melting and boiling point increase upto
(A) IIIA group
(B) IVA group
(C) VA group
(D) VIA group

Answer
IVA group

Which of the following is the formula of chrome red ?
(A) Pb3 O4
(B) 2Pb CO3 – Pb (OH)2
(C) Pb Cr O4 – Pb (OH)2
(D) Pb2O

Answer
Pb3 O4

Regular coiling or zigzagging of polypeptide through hydrogen bonding is its
(A) Quantum structure
(B) Secondary structure
(C) Tertiary structure
(D) Primary structure

Answer
Secondary structure

Benzene is a good solvent for
(A) fats
(B) resins
(C) iodine
(D) All of these

Answer
All of these

Which of the following element doesnot show allotropy
(A) Carbon
(B) Arsenic
(C) Nitrogen
(D) Sulphur

Answer
Nitrogen

Which acid is produced when milk gets sour?
(A) Acetic acid
(B) Tartaric acid
(C) Lactic acid
(D) Butyric acid

Answer
Lactic acid

Which of the following vitamins is synthesised in the body by intenstinal bacteria?
(A) Vitamin B1
(B) Vitamin B4
(C) Vitamin D
(D) Vitamin K

Answer
Vitamin K

The Magnalium is an alloy of what?
(A) Magnesium and Lead
(B) Aluminium and Magnesium
(C) Aluminium and Zinc
(D) Aluminium and Mercury

Answer
Aluminium and Magnesium

The metal that is occurred in the free state is
(A) Iron
(B) Lead
(C) Mercury
(D) Copper

Answer
Lead

What is the total energy of a revolving electron that is in an atom?
(A) Can have any value above zero
(B) Can never be positive
(C) Cannot be negative
(D) None of these

Answer
Can never be positive

Which element does not occur in nature but we can make it artificially?
(A) Uranium
(B) Plutonium
(C) Radium
(D) Thorium

Answer
Plutonium

An element that is required for the solar energy conversion is
(A) Ultra-pure carbon
(B) Beryllium
(C) Silicon
(D) Tantalum

Answer
Silicon

What is the ratio of pure gold in the 18 carat gold?
(A) 0.5
(B) 0.75
(C) 0.8.5
(D) 0.9

Answer
0.75

The kind of soil that we treat with the gypsum for making it suitable for cropping is
(A) Acidic
(B) Alkaline
(C) Waterlogged
(D) Soil with excessive clay content

Answer
Alkaline

What is Mercury called?
(A) Shine Silver
(B) Slow Silver
(C) Quick Silver
(D) Slippery Silver

Answer
Quick Silver

The copper is refined by
(A) Zone Refining
(B) Oxidation
(C) Roasting
(D) Electrolysis

Answer
Roasting

Which of the following is an element?
(A) Ruby
(B) Sapphire
(C) Diamond
(D) Emerald

Answer
Diamond

Potassium Permanganate is used for purifying drinking water, because
(A) It is a sterilising agent
(B) It dissolves the impurities of water
(C) It is a reducing agent
(D) It is an oxidising agent

Answer
It is an oxidising agent

Which of the following metals remain in liquid for under normal conditions?
(A) Radium
(B) Zinc
(C) Uranium
(D) Mercury

Answer
Mercury

Which of the following is the lightest metal?
(A) Mercury
(B) Lithium
(C) Lead
(D) Silver

Answer
Lithium

Amalgams are
(A) Highly coloured alloys
(B) Alloys which contain mercury as one of the contents
(C) Alloys which have great resistance to abrasion
(D) Alloys which contain carbon

Answer
Alloys which contain mercury as one of the contents

The main constituents of pearls are
(A) Calcium Oxide and Ammonium Chloride
(B) Calcium Carbonate and Magnesium Carbonate
(C) Aragonite and Conchiolin
(D) Ammonium Sulphate and Sodium Carbonate

Answer
Calcium Carbonate and Magnesium Carbonate

Which of the following is not an isotope of hydrogen?
(A) Tritium
(B) Deuterium
(C) Protium
(D) Yttrium

Answer
Yttrium

Water is a good solvent of ionic salts because
(A) It has a high specific heat
(B) It has no colour
(C) It has a high dipole moment
(D) It has a high boiling point

Answer
It has a high dipole moment

Bell metal is an alloy of
(A) Nickel and Copper
(B) Zinc and Copper
(C) Brass and Nickel
(D) Tin and Copper

Answer
Tin and Copper

Which metal pollute the air of a big city?
(A) Copper
(B) Chromium
(C) Lead
(D) Cadmium

Answer
Lead

Which of the following does not contain a coinage metal?
(A) Silver and Gold
(B) Zinc and Gold
(C) Copper and Silver
(D) Copper and Gold

Answer
Zinc and Gold

Balloons are filled with
(A) Nitrogen
(B) Helium
(C) Oxygen
(D) Argon

Answer
Helium

Production of chlorofluorocarbons (CFC) gas which is proposed to be banned in India, is used in which of the following domestic products?
(A) Television
(B) Refrigerator
(C) Tube light
(D) Cooking gas

Answer
Refrigerator

Air is a/an
(A) Compound
(B) Element
(C) Electrolyte
(D) Mixture

Answer
Mixture

LPG consists of mainly
(A) Methane, Ethane and Hexane
(B) Ethane, Hexane and Nonane
(C) Methane, Hexane and Nonane
(D) Methane, Butane and Propane

Answer
Methane, Butane and Propane

Marsh gas is
(A) Nitrogen
(B) Ethane
(C) Methane
(D) Hydrogen

Answer
Methane

Permanent hardness of water can be removed by adding
(A) Chlorine
(B) Washing Soda
(C) Potassium Permanganate
(D) Bleaching Powder

Answer
Washing Soda

In fireworks, the green flame is produced because of
(A) Sodium
(B) Barium
(C) Mercury
(D) Potassium

Answer
Barium

Diamond is an allotropic form of
(A) Germanium
(B) Carbon
(C) Sulphur
(D) Silicon

Answer
Carbon

The filament of an electric bulb is made of
(A) Tungsten
(B) Nichrome
(C) Graphite
(D) Iron

Answer
Tungsten

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