Hello Friends! I am here with a new topic called Science Quiz Question And Answers for a better general knowledge of the science concepts. Science can be a tough subject at times for many students. To understand and get familiar with science facts these Science Quiz Questions & Answers will be helpful for you to the fullest. These MCQ Quiz Questions on Science will teach you different types of scientific activities which we use daily and also help you in scoring high in various exams.
Science Quiz Questions and Answers
Here we have given five sections of science quiz test questions with answers to improve your knowledge of science facts, application of scientific principles, etc. Click on the respective Science MCQ Quiz sections from below and practice daily.
Science MCQ Quiz Questions and Answers 1
1. Brass gets discoloured in the air because of the presence of which of the following gases in air?
A.Oxygen
B.Hydrogen Sulphide
C.Carbon dioxide
D.Nitrogen
Answer
Answer: Option B
2. Which of the following is a non-metal that remains liquid at room temperature?
A.Phosphorous
B.Bromine
C.Chlorine
D.Helium
Answer
Answer: Option B
3. Chlorophyll is a naturally occurring chelate compound in which central metal is
A.copper
B.magnesium
C.iron
D.calcium
Answer
Answer: Option B
4. Which of the following is used in pencils?
A.Graphite
B.Silicon
C.Charcoal
D.Phosphorous
Answer
Answer: Option A
5. Which of the following metals forms an amalgam with other metals?
A.Tin
B.Mercury
C.Lead
D.Zinc
Answer
Answer: Option B
6. Chemical formula for water is
A.NaAlO2
B.H2O
C.Al2O3
D.CaSiO3
Answer
Answer: Option B
7. The gas usually filled in the electric bulb is
A.nitrogen
B.hydrogen
C.carbon dioxide
D.oxygen
Answer
Answer: Option A
8. Washing soda is the common name for
A.Sodium carbonate
B.Calcium bicarbonate
C.Sodium bicarbonate
D.Calcium carbonate
Answer
Answer: Option A
9. Quartz crystals normally used in quartz clocks etc. is chemically
A.silicon dioxide
B.germanium oxide
C.a mixture of germanium oxide and silicon dioxide
D.sodium silicate
Answer
Answer: Option A
10. Which of the gas is not known as green house gas?
A.Methane
B.Nitrous oxide
C.Carbon dioxide
D.Hydrogen
Answer
Answer: Option D
11. Bromine is a
A.black solid
B.red liquid
C.colourless gas
D.highly inflammable gas
Answer
Answer: Option B
12. The hardest substance available on earth is
A.Gold
B.Iron
C.Diamond
D.Platinum
Answer
Answer: Option C
13. The variety of coal in which the deposit contains recognisable traces of the original plant material is
A.bitumen
B.anthracite
C.lignite
D.peat
Answer
Answer: Option D
14. Tetraethyl lead is used as
A.pain killer
B.fire extinguisher
C.mosquito repellent
D.petrol additive
Answer
Answer: Option D
15. Which of the following is used as a lubricant?
A.Graphite
B.Silica
C.Iron Oxide
D.Diamond
Answer
Answer: Option A
16. The inert gas which is substituted for nitrogen in the air used by deep sea divers for breathing, is
A.Argon
B.Xenon
C.Helium
D.Krypton
Answer
Answer: Option C
17. The gases used in different types of welding would include
A.oxygen and hydrogen
B.oxygen, hydrogen, acetylene and nitrogen
C.oxygen, acetylene and argon
D.oxygen and acetylene
Answer
Answer: Option D
18. The property of a substance to absorb moisture from the air on exposure is called
A.osmosis
B.deliquescence
C.efflorescence
D.desiccation
Answer
Answer: Option B
19. In which of the following activities silicon carbide is used?
A.Making cement and glass
B.Disinfecting water of ponds
C.cutting very hard substances
D.Making casts for statues
Answer
Answer: Option C
20. The average salinity of sea water is
A.3%
B.3.5%
C.2.5%
D.2%
Answer
Answer: Option B
21. When an iron nail gets rusted, iron oxide is formed
A.without any change in the weight of the nail
B.with decrease in the weight of the nail
C.with increase in the weight of the nail
D.without any change in colour or weight of the nail
Answer
Answer: Option C
22.Galvanised iron sheets have a coating of
A.lead
B.chromium
C.zinc
D.tin
Answer
Answer: Option C
23. Among the various allotropes of carbon,
A.coke is the hardest, graphite is the softest
B.diamond is the hardest, coke is the softest
C.diamond is the hardest, graphite is the softest
D.diamond is the hardest, lamp black is the softest
Answer
Answer: Option C
24. The group of metals Fe, Co, Ni may best called as
A.transition metals
B.main group metals
C.alkali metals
D.rare metals
Answer
Answer: Option A
25. Heavy water is
A.deuterium oxide
B.PH7
C.rain water
D.tritium oxide
Answer
Answer: Option A
26. The chemical (ethyl mercaptan) added to the otherwise odourless LPG cooking gas for imparting a detectable smell to the gas is a compound of
A.bromine
B.fluorine
C.chlorine
D.sulphur
Answer
Answer: Option D
27. The element common to all acids is
A.hydrogen
B.carbon
C.sulphur
D.oxygen
Answer
Answer: Option A
28. Non stick cooking utensils are coated with
A.Teflon
B.PVC
C.black paint
D.polystyrene
Answer
Answer: Option A
29. Monazite is an ore of
A.titanium
B.zirconium
C.iron
D.thorium
Answer
Answer: Option D
30. Carbon, diamond and graphite are together called
A.allotropes
B.isomers
C.isomorphs
D.isotopes
Answer
Answer: Option A
31. Potassium nitrate is used in
A.medicine
B.fertiliser
C.salt
D.glass
Answer
Answer: Option B
32. Permanent hardness of water may be removed by the addition of
A.sodium carbonate
B.alum
C.potassium permanganate
D.lime
Answer
Answer: Option A
33. Soda water contains
A.carbonic acid
B.sulphuric acid
C.carbon dioxide
D.nitrous acid
Answer
Answer: Option C
34. The most important ore of aluminium is
A.galena
B.calamine
C.calcite
D.bauxite
Answer
Answer: Option D
35. Most soluble in water is
A.camphor
B.sulphur
C.common salt
D.sugar
Answer
Answer: Option D
36. Which of the following was to be discovered first in the chromospheres of the sun?
A.Krypton
B.Xenon
C.Neon
D.Helium
Answer
Answer: Option D
37. Which of the following is in liquid form at room temperature?
A.Lithium
B.Sodium
C.Francium
D.Cerium
Answer
Answer: Option C
38. Sodium metal is kept under
A.petrol
B.alcohol
C.water
D.kerosene
Answer
Answer: Option D
39. Which of the following are the ingredients of gun metal?
A.Iron, Zinc, Titanium
B.Iron, tin
C.Iron, Brass, Tin
D.Copper, Tin
Answer
Answer: Option D
40. From which mineral is radium obtained?
A.Rutile
B.Haematite
C.Limestone
D.Pitchblende
Answer
Answer: Option D
41. What is laughing gas?
A.Nitrous Oxide
B.Carbon monoxide
C.Sulphur dioxide
D.Hydrogen peroxide
Answer
Answer: Option A
42. Actinides are the elements with atomic numbers from
A.97 to 104
B.101 to 115
C.89 to 103
D.36 from 43
Answer
Answer: Option C
43. The two elements that are frequently used for making transistors are
A.boron and aluminium
B.silicon and germanium
C.iridium and tungsten
D.niobium and columbium
Answer
Answer: Option B
44. The filament of an electric bulb is made of
A.tungsten
B.nichrome
C.graphite
D.iron
Answer
Answer: Option A
45. Diamond is an allotropic form of
A.germanium
B.carbon
C.silicon
D.sulphur
Answer
Answer: Option B
46. In fireworks, the green flame is produced because of
A.sodium
B.barium
C.mercury
D.potassium
Answer
Answer: Option B
47. Permanent hardness of water can be removed by adding
A.chlorine
B.washing soda
C.potassium permanganate
D.bleaching powder
Answer
Answer: Option B
48. Marsh gas is
A.nitrogen
B.ethane
C.methane
D.hydrogen
Answer
Answer: Option C
49. 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
Answer: Option D
50. Air is a/an
A.compound
B.element
C.electrolyte
D.mixture
Answer
Answer: Option D
51. 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
Answer: Option B
52. Balloons are filled with
A.nitrogen
B.helium
C.oxygen
D.argon
Answer
Answer: Option B
53. 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
Answer: Option B
54. Which metal pollute the air of a big city?
A.Copper
B.Chromium
C.Lead
D.Cadmium
Answer
Answer: Option C
55. Bell metal is an alloy of
A.nickel and copper
B.zinc and copper
C.brass and nickel
D.tin and copper
Answer
Answer: Option D
56. 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
Answer: Option C
57. Which of the following is not an isotope of hydrogen?
A.Tritium
B.Deuterium
C.Protium
D.Yttrium
Answer
Answer: Option D
58. 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
Answer: Option B
59. 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
Answer: Option B
60. Which of the following is the lightest metal?
A.Mercury
B.Lithium
C.Lead
D.Silver
Answer
Answer: Option B
61. Which of the following metals remain in liquid for under normal conditions?
A.Radium
B.Zinc
C.Uranium
D.Mercury
Answer
Answer: Option D
62. 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
Answer: Option D
63. Which of the following is an element?
A.Ruby
B.Sapphire
C.Emerald
D.Diamond
Answer
Answer: Option D
Science Quiz Questions and Answers 2
The motion of the Earth on its axis is known as
(1)Motion (2)Revolution (3)Rotation
Answer
Answer: (3)Rotation
We can walk on moon easily this statement is True or False
Answer
Answer: False
Moon is a….
(1)Planet (2)Round (3)Satellite
Answer
Answer: (3)Satellite
Moon is a Satellite of
(1)Marsh (2)Jupiter (3)Earth
Answer
Answer: (3)Earth
The center of an atom that is called
(1)Neutron (2)Electron (3) Proton
Answer
Answer: (3) Proton
You see your reflection in a mirror because of
(1)Light is Reflected (2) Light is Diffracted (3)Light is refracted
Ans: (1)Light is Reflected
Objects that emit light on themselves are called
Answer
Answer: Luminous Object
Biggest Planet in Our Solar System
Ans: Jupiter
Name of the mirror which shows lateral inversion of light?
Answer
Answer: Plane Mirror
Water by the process of change in vapor
Answer
Answer: Evaporation
Which mirror is used in headlights of the Car?
Answer
Answer: Concave
Name of the Mirror which is used in Solar Furnace
Answer
Answer: Concave Mirror
Mirror used to Side and rear- view in a vehicle
Answer
Answer: Convex Mirror
Who invented the cell?
Answer
Answer: Robert Hooke
Which of the following steps Moon does not appear at all?
(1)New Moon (2)Full Moon (3)Gibbous Moon (4)Crescent Moon
Answer
Answer: (1)New Moon
The Loudness of the Sounds depends on which factor
(1)its amplitude (2)its Frequency (3)its time period (4)its speed
Answer
Answer: (1)its amplitude
Which part of the plant cell contains photosynthesis?
Answer
Answer: Chloroplast
What is the use of insulin in the treatment of the disease?
Answer
Answer: Diabetes
When is the largest day in the Northern Hemisphere on earth?
Answer
Answer: 21st June
What is measured by the Richter scale?
Answer
Answer: Earthquake intensity
What is the food portion on the onion?
Answer
Answer: Stem
Which gas is used in the production of vegetable ghee?
Answer
Answer: Hydrogen
What is the temperature of the surface of the sun?
Answer
Answer: 6000 degrees Celsius
PHvalue of the blood
Answer
Answer: 7.4
How gave the modern rotation theory (rule)
Answer
Answer: Mendalief
Science Quiz Questions and Answers 3
1. What is the name of instrument which is generally used to measure altitudes in aircraft’s?
Answer
Answer: Altimeter
2. What is the name of instrument which is used to calculate depth of ocean?
Answer
Answer: Fathometer
3. What is the name of instrument which is use to determine atmospheric pressure?
Answer
Answer: Barometer
4. What is the name of instrument which is used to calculate the power of electric circuit?
Answer
Answer: Wattmeter
5. What is the formula of Newton’s 2nd Law?
Answer
Answer: F=ma
6. Who gives the e=mc2 formula
Answer
Answer: Albert Einstein
7. Who gives the Fleming’s right-hand rule?
Answer
Answer: Fleming
8. Who gives the Fleming’s left hand rule
Answer
Answer: Fleming
9. What is the formula of Newton’s laws of motion?
Answer
Answer: F = m x a (F = Force, M = Mass and A= acceleration )
10. What is the name of acid which is present in lemon?
Answer
Answer: Citric acid
11. What is the name of chemical which is used as a fixer in photography?
Answer
Answer: Sodium thiosulphate
12. Do you know Atomic number is equal to?
Answer
Answer: Number of protons
13. What is the primary component of natural gas?
Answer
Answer: Methane
14. What is the name of gas which is used in fire extinguishers?
Answer
Answer: Carbon dioxide
15. What is the name of gas which is used in cigarette lighters?
Answer
Answer: Butane
16. What is the name of Gas which is majorly contained by Biogas?
Answer
Answer: Methane
17. What is the molecular formula of Calcium chloride?
Answer
Answer: CaCl2
18. What is the molecular formula of Calcium hydroxide?
Answer
Answer: Ca(OH)2
19. What is the molecular formula of Calcium nitrate?
Answer
Answer: Ca(NO3)2
20. What is the molecular formula of Cadmium sulfate?
Answer
Answer: CdSO4
21. Who discovered the cell?
Answer
Answer: Robert Hooke
22. Mitochondria is also called as?
Answer
Answer: Powerhouses of the cell
23. Who discovered the DNA?
Answer
Answer: Rosalind Franklin and Maurice Wilkins
24. What is the full form of DNA?
Answer
Answer: Deoxyribonucleic acid
25. What is the full form of RNA?
Answer
Answer: Ribonucleic acid
26. Who discoverd the RNA?
Answer
Answer: Severo Ochoa, Robert W. Holley and Carl Woese
27. Who is the father of Genetics?
Answer
Answer: Gregor Mendel
28. What is the number of chromosomes in humans?
Answer
Answer: 46 chromosomes (23 pairs of chromosomes)
29. What is the number of Autosomes in humans?
Answer
Answer: 22 pairs
30. Give the one key difference between animal cell and plant cell?
Answer
Answer: Plant cell enclosed by rigid cellulose cell wall and animal cell enclosed by thin plasma membrane
Science MCQ Quiz Questions and Answers 4
1. Which organ is affected by the disease known as ‘kala-azar”?
A.Liver
B.Heart
C.Lungs
D.Intestine
Answer
Answer: Liver
2. Which particular amoeba causes Amoebiasis, also known amoebic dysentery?
A.Dictyostelium
B.Naegleria
C.Pelomyxa
D.Entamoeba
Answer
Answer: Entamoeba
3. What is the formal name of the brain-eating amoeba?
A.Entamoeba histolytica
B.Naegleria fowleri
C.Pelomyxa palustris
D.Chaos carolinense
Answer
Answer: Naegleria fowleri
4. Which one of the following is a form of severe protein-energy malnutrition?
A.Anemia
B.Goiter
C.Pellagra
D.Kwashiorkor
Answer
Answer: Kwashiorkor
5. Name the chemical that is responsible for the yellow colour of urine
A.Urobilin
B.Creatinine
C.Heamoglobin
D.Methylene
Answer
Answer: Urobilin
6. Name the artery in the wrist where we can usually feel the pulse
A.Femoral artery
B.Radial artery
C.Dorsalis artery
D.Popliteal artery
Answer
Answer: Radial artery
7. Name the vitamin that is known as phytomenadione or phylloquinone
A.Vitamin C
B.Vitamin D
C.Vitamin E
D.Vitamin K
Answer
Answer: Vitamin K
8. Which one of the following form of cance arise from cells that make blood?
A.Carcinoma
B.Sarcoma
C.Lymphoma
D.Blastoma
Answer
Answer: Lymphoma
9. Which one of the following is NOT a Sexually Transmitted Disease?
A.Syphilis
B.Gonorrhea
C.HIV/AIDS
D.Giardiasis
Answer
Answer: Giardiasis
10. Who is the present Director-General of World Health Organisation (WHO)?
A.Margaret Chan
B.Lee Jong-wook
C.Gro Harlem Brundtland
D.Hiroshi Nakajima
Answer
Answer: Margaret Chan
Science MCQ Quiz Questions and Answers 5
1. Chandrayaan-2 Mission was launched by which vehicle?
A. GSLV MkIII
B. PSLV C11
C. GSLV F11
D. PSLV C45
Answer
Answer: A. GSLV MkIII
2. Which of the following anti-satellite missile is tested by India on 27 March, 2019?
A. Mission Antriksh
B. Mission Gagan
C. Mission Shakti
D. Mission Destruction
Answer
Answer: C. Mission Shakti
3. Exposure to which light may accelerate aging?
A. Blue light
B. Red Light
C. Yellow Light
D. None of the above
Answer
Answer: A. Blue light
4. Which among the following country first reached the ‘Dark Side’ of the Moon?
A. India
B. USA
C. China
D. Russia
Answer
Answer: C. China
5. Zika virus was named after the Zika Forest of which country?
A. Nigeria
B. Angola
C. Nicaragua
D. Uganda
Answer
Answer: D. Uganda
6. Which country has developed the world-first floating nuclear plant?
A. India
B. China
C. USA
D. Russia
Answer
Answer: D. Russia
7. Which Space agency has discovered the ‘First Nearby Super-Earth’?
A. The National Aeronautics and Space Administration (NASA)
B. Indian Space Research Organisation (ISRO)
C. The European Space Agency (ESA)
D. Chinese National Space Agency (CNSA)
Answer
Answer: A. The National Aeronautics and Space Administration (NASA)
8. In which continent scientists have found particles of rare isotope of Iron?
A. Africa
B. Antarctica
C. Europe
D. Australia
Answer
Answer: B. Antarctica
9. Brass gets discoloured in air because of the presence of which of the following gases in air?
A.Oxygen
B.Hydrogen sulphide
C.Carbon dioxide
D.Nitrogen
Answer
Answer: B.Hydrogen sulphide
10. Which of the following is used in pencils?
A.Graphite
B.Silicon
C.Charcoal
D.Phosphorous
Answer
Answer: A.Graphite
11. Which of the following metals forms an amalgam with other metals?
A.Tin
B.Mercury
C.Lead
D.Zinc
Answer
Answer: B.Mercury
12. Which of the following is a nonmetal that remains liquid at room temperature?
A.Phosphorous
B.Bromine
C.Chlorine
D.Helium
Answer
Answer: B.Bromine
13. The gas usually filled in the electric bulb is
A.nitrogen
B.hydrogen
C.carbon dioxide
D.oxygen
Answer
Answer: A.nitrogen
14. Washing soda is the common name for
A.Sodium carbonate
B.Calcium bicarbonate
C.Sodium bicarbonate
D.Calcium carbonate
Answer
Answer: A.Sodium carbonate
15. Chlorophyll is a naturally occurring chelate compound in which central metal is
A.copper
B.magnesium
C.iron
D.calcium
Answer
Answer: B.magnesium
16. Heavy water is
A.deuterium oxide
B.PH7
C.rain water
D.tritium oxide
Answer
Answer: A.deuterium oxide
17. Carbon, diamond and graphite are together called
A.allotropes
B.isomers
C.isomorphs
D.isotopes
Answer
Answer: A. allotropes
18. Quartz crystals normally used in quartz clocks etc. is chemically
A.silicon dioxide
B.germanium oxide
C.a mixture of germanium oxide and silicon dioxide
D.sodium silicate
Answer
Answer: A.silicon dioxide
19. Potassium nitrate is used in
A.medicine
B.fertiliser
C.salt
D.glass
Answer
Answer: B.fertiliser
20. Which of the gas is not known as greenhouse gas?
A.Methane
B.Nitrous oxide
C.Carbon dioxide
D.Hydrogen
Answer
Answer: D.Hydrogen
21. Permanent hardness of water may be removed by the addition of
A.sodium carbonate
B.alum
C.potassium permanganate
D.lime
Answer
Answer: A.sodium carbonate
22. Bromine is a
A.black solid
B.red liquid
C.colourless gas
D.highly inflammable gas
Answer
Answer: B.red liquid
23. Soda water contains
A.carbonic acid
B.sulphuric acid
C.carbon dioxide
D.nitrous acid
Answer
Answer: C. Carbon dioxide
24. The hardest substance available on earth is
A.Gold
B.Iron
C.Diamond
D.Platinum
Answer
Answer: C.Diamond
25. Sodium metal is kept under
A.petrol
B.alcohol
C.water
D.kerosene
Answer
Answer: D.kerosene
26. Tetraethyl lead is used as
A.pain killer
B.fire extinguisher
C.mosquito repellent
D.petrol additive
Answer
Answer: D.petrol additive
27. What is laughing gas?
A. Nitrous Oxide
B.Carbon monoxide
C.Sulphur dioxide
D.Hydrogen peroxide
Answer
Answer: A. Nitrous Oxide
28. Which of the following is used as a lubricant?
A.Graphite
B.Silica
C.Iron Oxide
D.Diamond
Answer
Answer: A.Graphite
29. The filament of an electric bulb is made of
A.tungsten
B.nichrome
C.graphite
D.iron
Answer
Answer: A.tungsten
30. In which of the following activities silicon carbide is used?
A.Making cement and glass
B.Disinfecting water of ponds
C.cutting very hard substances
D.Making casts for statues
Answer
Answer: C.cutting very hard substances
31. In fireworks, the green flame is produced because of
A.sodium
B.barium
C.mercury
D.potassium
Answer
Answer: B.barium
32. 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
Answer: D.methane, butane and propane
33. Which metal pollute the air of a big city?
A.Copper
B.Chromium
C.Lead
D.Cadmium
Answer
Answer: C.Lead
34. Which of the following is the lightest metal?
A.Mercury
B.Lithium
C.Lead
D.Silver
Answer
Answer: B.Lithium
35. Which of the following is an element?
A.Ruby
B.Sapphire
C.Emerald
D.Diamond
Answer
Answer: D.Diamond
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FAQs on Science Quiz Objective Question and Answers
1. 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: D.methane, butane, and propane
2. Permanent hardness of water may be removed by the addition of
A.sodium carbonate
B.alum
C.potassium permanganate
D.lime
Answer: A.sodium carbonate
3. What is the full form of DNA?
Answer: Deoxyribonucleic acid
4. Which of the following is used in pencils?
A.Graphite
B.Silicon
C.Charcoal
D.Phosphorous
Answer: Option A. Graphite