Science Quiz for Class 9 and 10 | Chemistry, Physics & Biology Quiz

Science Quiz Questions for Class 9 and Class 10 with Answers: Dear Students looking for the Science Quiz Question for Class 9 and Class 10 than you are in a right place. Here our team collected numbers of Science Quiz related to various branches of Science i.e. chemistry, physics and Biology.  These important Science Quiz Questions also have been asked in various examination i.e. SSC, NDA, CDS, RRB, BPSC and various others civil services examination also. So at the exam point of view this quiz will also help you in near future competitive exams.  So here are Science Quiz Questions for Class 9 and Class 10 with Answers

Chemistry Quiz Questions Answers for Class 9^th & 10^th

Question: Which of the following is used to remove permanent hardness of water?

[A] Baking soda

[B] Bleaching powder

[C] Limestone

[D] Washing soda

Answer: [D] Washing soda

Question: Which element has the same atomic number and atomic mass?

[A] Hydrogen

[B] Helium

[C] Lithium

[D] Oxygen

Answer: [A] Hydrogen

Question: Hydrogen was discovered by which of the following scientist?

[A] Cavendish

[B] Charles

[C] Boyle

[D] Rutherford

Answer: [A] Cavendish

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Question: All acids react with metals to produce which gas?

[A] Nitrogen

[B] Hydrogen

[C] Carbon monoxide

[D] Oxygen

Answer: [B] Hydrogen

Question: Which gas is used in the manufacture of “Vegetable Ghee”?

[A] Hydrogen

[B] Oxygen

[C] Carbon dioxide

[D] Helium

Answer: [A] Hydrogen

Question: Hydrogenation of vegetable oils using nickel fertilizer is an example of which of the following?

[A] Substitution reaction

[B] Elimination reaction

[C] Compilation reaction

[D] None of the above

Answer: [C] Addition reaction

Question: The boiling point of water as compared to hydrogen sulfide or hydrogen chloride is due to

[A] Hydrogen bonding

[B] Polar covalent bond

[C] Polar insulation

[D] None of the above

Answer: [A] Hydrogen bonding

Question: What happens to the boiling point and freezing point of water when salt is added to water?

[A] Increases

[B] Decreases

[C] Increase and decrease respectively

[D] Remains fixed

Answer: [C] Increase and decrease respectively

Question: By which process pure water can be obtained from sea water?

[A] By distillation

[B] By evaporation

[C] By condensation

[D] By fractional distillation

Answer: [A] By distillation

Question: Permanent hardness of water is due to……..

[A] Sulphates of sodium and potassium

[B] Sulfates of magnesium and calcium

[C] Carbonates of sodium and magnesium

[D] Carbonates of magnesium and calcium

Answer: [B] Sulphates of magnesium and calcium

Question: Temporary hardness of water is due to………………..

[A] Bicarbonates of calcium and magnesium

[B] White of calcium and magnesium

[C] Bicarbonates of magnesium and calcium

[D] Nitrates of calcium and magnesium

Answer: [A] Bicarbonates of calcium and magnesium

Question: Which of the following is an essential element of all organisms?

[A] Nitrogen

[B] Oxygen

[C] Carbon

[D] Carbon dioxide

Answer: [C] Carbon

Question: ………………….. non-metals is a good conductor of electricity.

[A] Bromine

[B] Graphite

[C] Iodine

[D] Krypton

Answer: [B] Graphite

Question: Which of the following air pollutants is the most harmful?

[A] Ozone

[B] Carbon dioxide

[C] Carbon monoxide

[D] Hydrogen sulfide

Answer: [C] Carbon monoxide

Question: Name of the gas that reduces the oxygen carrying capacity in the blood?

[A] Nitrous oxide

[B] Carbon monoxide

[C] Nitrogen

[D] Nitrogen oxide

Answer: [B] Carbon monoxide

Question: Due to the presence of which of the following, lime water turns milky when kept in air?

[A] Carbon dioxide

[B] Oxygen

[C] Nitrogen

[D] Sulfur dioxide

Answer: [A] Carbon dioxide

Question: Which is the main ingredient used in the manufacture of different types of glass?

[A] Silica

[B] Calcium silicate

[C] Silicon tetrachloride

[D] Silicon Hydrite

Answer: [A] Silica

Question: Identify the element which is found in maximum quantity in the outer layer of the earth?

[A] Oxygen

[B] Hydrogen

[C] Iron

[D] Silicon

Answer: [A] Oxygen

Question: During deep sea diving divers use a mixture of oxygen and which gas?

[A] Hydrogen

[B] Helium

[C] Boron

[D] Organ

Answer: [B] Helium

Question: Which of the following gas is not a noble gas?

[A] Hydrogen

[B] Helium

[C] Neon gas

[D] Oxygen

Answer: [C] Neon gas

Question: Which of the following is a gaseous mixture of carbon monoxide and nitrogen gas?

[A] Coal gas

[B] Podiuser gas

[C] Biogas

[D] Water gas

Answer: [B] Podiuser gas

Question: Which of the following gas expelled from biogas plant is used as fuel gas?

[A] Butane

[B] Propane

[C] Methane

[D] None of the above

Answer: [C] Methane

Question: From the point of view of safety, what is filled in cooking LPG gas cylinder to make the gas smelly?

[A] Mercaptan gas

[B] Ammonia

[C] Helium

[D] Oxygen

Answer: [A] Mercaptan gas

Question: Which of the following is mainly found in natural gas?

[A] Ethane

[B] Butane

[C] Methane

[D] Coal

Answer: [C] Methane

Question: Which of the following fuels causes minimum environmental pollution?

[A] Hydrogen

[B] Coal

[C] Diesel

[D] Kerosene

Answer: [A] Hydrogen

Question: The amount of heat that is obtained as a result of burning 1 gram of a fuel completely in air or oxygen, is called?

[A] Calorific value

[B] Combustion

[C] Calorific value

[D] Ignition temperature

Answer: [C] Calorific value

Question: Which one of the following has the highest fuel value?

[A] Hydrogen

[B] Charcoal

[C] Natural gas

[D] Gasoline

Answer: [A] Hydrogen

Question: Which of the following is not a fossil fuel?

[A] Nitrogen

[B] Water gas

[C] Petroleum

[D] Coal

Answer: [A] Nitrogen

Question: Which of the following is not a fuel element?

[A] Nitrogen

[B] Helium

[C] Uranium

[D] None of these

Answer: [B] Helium

Question: The minimum temperature at which a substance starts burning is called that substance?

[A] Ignition temperature

[B] Calorific value

[C] Critical temperature

[D] None of these

Answer: [A] ignition temperature

Question: Sodium bicarbonate solution filled in fire extinguishers reacts with which to form carbon dioxide?

[A] Carbolic acid

[B] Sulfuric acid

[C] Acetic acid

[D] None of these

Answer: [B] sulfuric acid

Physics Quiz Questions with Answers for Class 9 and 10

Question: The proofs whose atomic numbers are the same but the atomic mass is different are called what?

[A] Isobar

[B] Isotopes

[C] Isobars

[D] None of these

Answer: [B] Isotopes

Question: Atoms which have same number of protons but different number of neutrons are called?

[A] Isotopes

[B] Coordinator

[C] Isogamies

[D] None of these

Answer: [A] Isotopes

Question: Which of the following emit radioactive substances?

[A] Alpha rays

[B] Beta rays

[C] Gamma rays

[D] All of the above

Answer: [D] All of the above

Question: Which one of the following is an essential element in the construction of a nuclear reactor?

[A] Cobalt

[B] Nickel

[C] Zirconium

[D] Tungsten

Answer: [C] Zirconium

Question: Which device is used to convert solar energy into electricity?

[A] photovoltaic cell

[B] electrochemical cell

[C] Daniel Sail

[D] none of the above

Answer: [A] Photovoltaic cell

Question: Which of the following metals is used in transistors as semiconductors?

[A] Germanium

[B] copper

[C] graphite

[D] Silver

Answer: [A] Germanium

Question: Which type of electromagnetic radiation is used for remote control of television?

[A] infrared

[B] view

[C] ultraviolet

[D] none of the above

Answer: [A] Infrared

Question: TV remote control works on which principle?

[A] infrared wave

[B] Laser technology

[C] Bluetooth technology

[D] Ultrasonic wave

Answer: [A] Infrared wave

Question: Which of the radiation has the shortest wavelength?

[A] radio waves

[B] infrared wave

[C] ultraviolet

[D] visible light

Answer: [C] Ultraviolet

Question: Identify the wave which is not an electromagnetic wave

[A] Ultrasonic waves

[B] X rays

[C] light

[D] thermal radiation

Answer: [A] Ultrasonic waves

Question: The semiconductor chip used in integrated circuit is made of which of the following?

[A] Silicon

[B] Carbon

[C] Beryllium

[D] iron

Answer: [A] Silicon

Question: Which of the following is the wave used in radar system?

[A] infrared wave

[B] Microwaves

[C] ultraviolet

[D] radio waves

Answer: [B] Microwaves

Question: What is measured by “Wheatstone Bridge”?

[A] Electric current

[B] potential difference

[C] Resistance

[D] sound intensity

Answer: [C] Resistance

Question: The instrument used to measure the intensity of the sun’s rays is called?

[A] Actiometer

[B] Chrysograph

[C] Barometer

[D] Astro Meter

Answer: [A] Actiometer

Question: If the velocity of a moving object is doubled, then its

[A] Acceleration will be doubled

[B] Kinetic energy will become 4 times

[C] Kinetic energy will double

[D] The weight of the object will become 2 times

Answer: [B] Kinetic energy will become 4 times

Question: What will be the change in the volume of water if the temperature is dropped from 9°C to 3°C?

[A] There will be no change in volume

[B] The volume of water will increase first and then decrease

[C] The volume of water will first decrease and then increase

[D] None of these

Answer: [C] The volume of water will first decrease and then increase

Question: Which of the following is produced by converting solar energy using photovoltaic cell?

[A] Electrical energy

[B] Thermal energy

[C] Kinetic energy

[D] Mechanical energy

Answer: [A] Electric energy

Question: When the barometric temperature suddenly drops, what does it indicate?

[A] Summer season

[B] Cold weather

[C] Chance of thunderstorm

[D] Dry season

Answer: [C] Chance of thunderstorm

Question: At what temperature is the density of water highest?

[A] 0 °C

[B] 1 degree Celsius

[C] 2 °C

[D] 4 °C

Answer: [D] 4 °C

Question: Which of the following will remain unchanged when the quantity of the commodity changes?

[A] Volume

[B] Density

[C] Mass

[D] Weight

Answer: [B] Density

Question: Why does water boil at a temperature below 100 degree Celsius at high altitude?

[A] As the atmospheric pressure decreases, the boiling point comes down

[B] Because gravity is less

[C] Due to heavy winds on the mountains

[D] None of these

Answer: [A] As the atmospheric pressure decreases, the boiling point comes down.

Question: The pressure inside a soap bubble is –

[A] is greater than atmospheric pressure.

[B] Less than atmospheric pressure

[C] Atmospheric pressure is equal to

[D] None of the above

Answer: [A] is greater than atmospheric pressure.

Question: If the mass of the earth remains the same and the radius is reduced by 1%, then what will be the value of ‘g’ on the surface of the earth?

[A] Will increase by 0.5%

[B] Will increase by 2%

[C] 0.5 will decrease

[D] Will be reduced by 2%

Answer: [B] will increase by 2%

Science Biology Quiz Questions for Class 9 & 10 with Answers

Question: Which of the following is the first enzyme found in the digestive tract with food?

[A] Cellulose

[B] Pepsin

[C] Amylase

[D] None of these

Answer: [C] Amylase

Question: Which of the following enzymes is found in saliva?

[A] Tylin

[B] Resin

[C] Cellulose

[D] Pepsin

Answer: [A] Tylin

Question: Which of the following is required for the digestion of food in the stomach?

[A] Wind

[B] Water

[C] Enzyme

[D] Minerals

Answer: [C] Enzyme

Question: In which of the following organs does the digestion of proteins of the human body begin?

[A] Liver

[B] Small intestine

[C] Stomach

[D] Large intestine

Answer: [C] Stomach

Question: Which of the following is the alimentary canal?

[A] esophagus

[B] Jugular tube

[C] Aorta

[D] None of these

Answer: [A] Esophagus

Question: Which of the following is the organ that stores carbohydrates in the form of glycogen in the human body?

[A] Gut

[B] Liver

[C] Stomach

[D] Pancreas

Answer: [B] Liver

Question: Which part of the human body is called the ‘chemical factory of the body’?

[A] Liver

[B] Lungs

[C] Heart

[D] Brain

Answer: [A] Liver

Question: Which part of the body is responsible for the formation of red blood cells?

[A] Brain

[B] Heart

[C] Lungs

[D] Bone marrow

Answer: [D] Bone marrow

Question: Which of the following is not a gland?

[A] Thyroid

[B] Gastric

[C] Liver

[D] Pancreas

Answer: [B] Gastric

Question: EEG is used to record the activity of which of the following?

[A] Heart

[B] Brain

[C] Lungs

[D] Eyes

Answer: [B] brain

Question: Which one of the following organs produces cholesterol for the breakdown of fats?

[A] Liver

[B] Pancreas

[C] Stomach

[D] Uterus

Answer: [A] Liver

Question: Which of the following is a free-living bacterium that increases the yield of paddy in the soil?

[A] Acetobacter

[B] Azotobacter

[C] Rhizobium

[D] Anabaena

Answer: [D] Anabaena

Question: Which of the following makes milk sour?

[A] Protozoa

[B] Bacteria

[C] Virus

[D] None of these

Answer: [B] Bacteria

Question: Which is used in curing tea leaves?

[A] Bacteria

[B] Fungus

[C] Virus

[D] None of these

Answer: [A] Bacteria

Question: What is the photosynthetic effect found in bacteria called?

[A] Pigment

[B] Respiratory root

[C] Medieval period

[D] None of these

Answer: [A] pigment

Question: Which of the following is called ‘aquaculture’ in the plant world?

[A] Fungus

[B] Algae

[C] Bryophyta

[D] None of these

Answer: [C] Bryophyta

Question: Which of the following is used as organic manure?

[A] Neem

[B] Azolla

[C] Urea

[D] Potassium

Answer: [B] Azolla

Question: Which of the following parts of the plant does not have a ‘differentiated body’?

[A] Bryophyta

[B] Pteridophyta

[C] Thallophyta

[D] None of these

Answer: [C] Thallophyta

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