Top 50 Science GK Questions with Answers on Everyday Science

Science GK Questions: Every day, we do many things that involve science, even if we don’t realise it. One common example is using soap to clean our hands before cooking or eating. But have you ever wondered how soap works to get rid of dirt and germs? It’s all about science, and we use it in our daily lives. Let’s explore some everyday scientific activities, and this knowledge can also be handy for various exams.

Many things that happen in our everyday life are actually connected to science. It’s important for us to realise that science is all around us. For example, think about how milk turns into curd or how bread gets baked in an oven when it’s really hot. These are all examples of how the properties of things change because of science.

Best 100 Science GK Questions with Answers Quiz to Test Your Knowledge

Question: Which gas is most abundant in the Earth’s atmosphere?

1. Nitrogen
2. Oxygen
3. Carbon dioxide
4. Hydrogen

Answer: a) Nitrogen

Question: What is the chemical symbol for gold?

1. Go
2. Gl
3. Gd
4. Au

Answer: d) Au

Question: What is the process by which plants make their food using sunlight?

1. Photosynthesis
2. Respiration
3. Fermentation
4. Transpiration

Answer: a) Photosynthesis

Question: Which planet is known as the “Red Planet”?

1. Venus
2. Mars
3. Jupiter
4. Saturn

Answer: b) Mars

Question: What is the chemical formula for water?

1. H2O2
2. CO2
3. H2O
4. O2H

Answer: c) H2O

Question: The pH scale measures the acidity or alkalinity of a substance. What does a pH of 7 indicate?

1. Neutral
2. Acidic
3. Alkaline
4. Basic

Answer: a) Neutral

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Question: Who is known as the father of modern physics and developed the theory of relativity?

1. Isaac Newton
2. Galileo Galilei
3. Albert Einstein
4. Stephen Hawking

Answer: c) Albert Einstein

Question: Which gas do plants absorb from the atmosphere during photosynthesis?

1. Carbon dioxide
2. Oxygen
3. Hydrogen
4. Nitrogen

Answer: a) Carbon dioxide

Question: What is the chemical symbol for iron?

1. Ir
2. Io
3. Fe
4. Fi

Answer: c) Fe

Question: Which gas is responsible for the Earth’s ozone layer depletion?

1. Oxygen
2. Nitrogen
3. Chlorofluorocarbons (CFCs)
4. Carbon dioxide

Answer: c) Chlorofluorocarbons (CFCs)

Question: What is the unit of electric current?

1. Joule
2. Volt
3. Ampere
4. Ohm

Answer: c) Ampere

Question: Which metal is the best conductor of electricity?

1. Silver
2. Copper
3. Gold
4. Aluminium

Answer: b) Copper

Question: What is the process by which plants release water vapour into the atmosphere?

1. Condensation
2. Photosynthesis
3. Transpiration
4. Respiration

Answer: c) Transpiration

Question: What is the chemical symbol for lead?

1. Li
2. Ld
3. Le
4. Pb

Answer: d) Pb

Question: Which gas do humans primarily exhale when breathing?

1. Carbon dioxide
2. Oxygen
3. Nitrogen
4. Hydrogen

Answer: a) Carbon dioxide

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Question: What is the process of a liquid changing into a gas at its boiling point?

1. Sublimation
2. Evaporation
3. Condensation
4. Melting

Answer: b) Evaporation

Question: Which planet is known as the “Evening Star” or “Morning Star” due to its visibility?

1. Venus
2. Mercury
3. Mars
4. Jupiter

Answer: a) Venus

Question: What is the main gas in the Earth’s stratosphere that absorbs and blocks harmful UV radiation?

1. Oxygen
2. Carbon dioxide
3. Nitrogen
4. Ozone

Answer: d) Ozone

Question: Who is credited with the discovery of the laws of motion and universal gravitation?

1. Galileo Galilei
2. Johannes Kepler
3. Isaac Newton
4. Albert Einstein

Answer: c) Isaac Newton

Question: Which gas is commonly used in car tires to inflate them?

1. Oxygen
2. Nitrogen
3. Helium
4. Carbon dioxide

Answer: b) Nitrogen

Question: What is the chemical symbol for silver?

1. Si
2. Sr
3. Ag
4. Al

Answer: c) Ag

Question: What is the process by which liquid water turns into ice?

1. Vaporization
2. Condensation
3. Melting
4. Freezing

Answer: d) Freezing

Question: Which gas is responsible for the greenhouse effect and global warming?

1. Oxygen
2. Nitrogen
3. Carbon dioxide
4. Hydrogen

Answer: c) Carbon dioxide

Question: What is the chemical symbol for potassium?

1. Po
2. Pt
3. K
4. Ka

Answer: c) K

Question: Which metal is commonly used for making aircraft and aerospace components due to its low density?

1. Iron
2. Copper
3. Aluminium
4. Silver

Answer: c) Aluminium

Question: What is the chemical formula for methane, the primary component of natural gas?

1. CH3
2. CO
3. CH4
4. H2O

Answer: c) CH4

Question: In the electromagnetic spectrum, which colour of light has the highest frequency?

1. Red
2. Blue
3. Green
4. Violet

Answer: d) Violet

Question: What is the process of water droplets forming on a cold surface due to condensation in the air?

1. Dew
2. Frost
3. Hail
4. Rain

Answer: a) Dew

Question: What is the chemical symbol for carbon?

1. Co
2. Cb
3. Cr
4. C

Answer: d) C

Question: Which gas is essential for respiration and is inhaled by humans during breathing?

1. Carbon dioxide
2. Oxygen
3. Nitrogen
4. Hydrogen

Answer: b) Oxygen

Question: What is the unit of force in the International System of Units (SI)?

1. Watt
2. Newton
3. Volt
4. Ampere

Answer: b) Newton

Question: Which metal is used to make permanent magnets?

1. Gold
2. Iron
3. Aluminium
4. Nickel

Answer: b) Iron

Question: What is the chemical symbol for mercury, a liquid metal at room temperature?

1. Me
2. Mg
3. Hg
4. Mr

Answer: c) Hg

Question: In which part of the human body is the smallest bone found?

1. Arm
2. Leg
3. Ear
4. Nose

Answer: c) Ear

Question: Which gas is produced during the process of fermentation?

1. Oxygen
2. Carbon dioxide
3. Hydrogen
4. Nitrogen

Answer: b) Carbon dioxide

Question: What is the chemical symbol for sodium?

1. So
2. Sd
3. Na
4. Ne

Answer: c) Na

Question: What is the process by which an object appears to be lifted or pushed up when placed in a fluid?

1. Buoyancy
2. Gravity
3. Inertia
4. Friction

Answer: a) Buoyancy

Question: Which gas is used in fire extinguishers to suppress fires by displacing oxygen?

1. Carbon dioxide
2. Oxygen
3. Nitrogen
4. Hydrogen

Answer: a) Carbon dioxide

Question: What is the chemical formula for table salt (sodium chloride)?

1. NaCl
2. H2O
3. CO2
4. K2SO4

Answer: a) NaCl

Question: Which gas is used for inflating balloons and makes your voice sound squeaky when inhaled?

1. Oxygen
2. Carbon dioxide
3. Helium
4. Nitrogen

Answer: c) Helium

Question: What is the chemical symbol for neon, a noble gas commonly used in neon signs?

1. No
2. Ne
3. Na
4. Ni

Answer: b) Ne

Question: In which state of matter do particles have the most kinetic energy and move freely?

1. Solid
2. Liquid
3. Gas
4. Plasma

Answer: c) Gas

Question: What is the unit of energy in the International System of Units (SI)?

1. Joule
2. Watt
3. Volt
4. Ampere

Answer: a) Joule

Question: What is the chemical symbol for copper?

1. Cu
2. Cp
3. Cr
4. Co

Answer: a) Cu

Question: Which gas is responsible for the distinctive smell of rotten eggs?

1. Oxygen
2. Carbon dioxide
3. Hydrogen
4. Hydrogen sulphide

Answer: d) Hydrogen sulphide

Question: What is the process by which water droplets combine to form larger droplets and fall as precipitation?

1. Evaporation
2. Sublimation
3. Condensation
4. Coalescence

Answer: d) Coalescence

Question: What is the chemical symbol for helium, a gas known for its use in balloons and airships?

1. H
2. He
3. Hy
4. Ha

Answer: b) He

Question: Which gas is used in the treatment of respiratory conditions and is commonly inhaled for medical purposes?

1. Oxygen
2. Carbon dioxide
3. Nitrogen
4. Nitrous oxide

Answer: d) Nitrous oxide

Question: In which part of the human body are the vocal cords located?

1. Lungs
2. Brain
3. Throat
4. Heart

Answer: c) Throat

Question: What is the chemical symbol for silicon, a key component in the electronics industry?

1. Si
2. So
3. Se
4. Sl

Answer: a) Si