Dr. Homi Bhabha Exam sample question paper for Class 6 with our comprehensive set 6 is designed specifically for students following the Maharashtra State Board curriculum, aligning perfectly with the textbooks for 4th, 5th, and 6th standards. This sample question paper is designed to challenge students with in-depth, analytical questions from Maharashtra State Board, CBSE, ICSE, and IB textbooks, covering fundamental science concepts at a high difficulty level.
With questions set at a hard difficulty level, students can effectively enhance their understanding and confidence. Each question aims to challenge students while reinforcing their knowledge, making this resource invaluable preparing for DHBBVS.
Which of these is a non-living thing?
a) Tree b) Dog c) Stone d) Fish
Answer: c) Stone
Explanation: Stones do not have life processes like growth or reproduction, so they are considered non-living.Which part of a plant is responsible for producing seeds?
a) Leaf b) Stem c) Root d) Flower
Answer: d) Flower
Explanation: Flowers are the reproductive part of plants where seeds are produced after pollination.In which season do most plants bear fruits and flowers?
a) Summer b) Winter c) Spring d) Autumn
Answer: c) Spring
Explanation: Spring is known for its favorable conditions, allowing plants to flower and bear fruits.What does a seed need to grow?
a) Air, water, and light b) Soil, food, and fertilizer c) Water, carbon dioxide, and food d) Heat, ice, and wind
Answer: a) Air, water, and light
Explanation: Seeds require air, water, and light to germinate and grow into plants.
Which of the following is a type of sedimentary rock?
a) Granite b) Basalt c) Sandstone d) Marble
Answer: c) Sandstone
Explanation: Sandstone is formed from compressed layers of sand and is classified as a sedimentary rock.The organ that pumps blood throughout the human body is the:
a) Lungs b) Heart c) Brain d) Stomach
Answer: b) Heart
Explanation: The heart is responsible for pumping blood through the circulatory system.Which of these gases is commonly used in fire extinguishers?
a) Oxygen b) Carbon Dioxide c) Nitrogen d) Helium
Answer: b) Carbon Dioxide
Explanation: Carbon dioxide is used in fire extinguishers because it displaces oxygen, which helps to stop combustion.The part of the plant that anchors it in the soil is called the:
a) Leaf b) Stem c) Root d) Flower
Answer: c) Root
Explanation: Roots provide support and absorb water and nutrients from the soil.The natural satellite of the Earth is:
a) Mars b) Venus c) Moon d) Sun
Answer: c) Moon
Explanation: The Moon is Earth’s only natural satellite and orbits around it.Which of the following materials is commonly used in making glass?
a) Sand b) Wood c) Clay d) Metal
Answer: a) Sand
Explanation: Sand is the primary raw material used in the production of glass.Water pollution is mainly caused by:
a) Green plants b) Waste materials c) Animals d) Rocks
Answer: b) Waste materials
Explanation: Waste materials from industries and households contaminate water sources, causing pollution.The small pores on the surface of leaves that allow gas exchange are called:
a) Chloroplasts b) Stomata c) Nerves d) Phloem
Answer: b) Stomata
Explanation: Stomata are tiny openings on leaves that facilitate gas exchange.
Which type of tissue in plants conducts water and nutrients from roots to leaves?
a) Xylem b) Phloem c) Cortex d) Cambium
Answer: a) Xylem
Explanation: Xylem tissue transports water and dissolved minerals from roots to other parts of the plant.The process by which plants release water vapor into the atmosphere is called:
a) Condensation b) Evaporation c) Transpiration d) Precipitation
Answer: c) Transpiration
Explanation: Transpiration is the process where plants lose water vapor through their leaves.Which planet has the longest day (rotation period) among all planets in our solar system?
a) Mars b) Jupiter c) Venus d) Mercury
Answer: c) Venus
Explanation: Venus has the longest day, with one rotation taking approximately 243 Earth days.The basic building block of proteins is the:
a) Glucose b) Amino acid c) Fatty acid d) Nucleotide
Answer: b) Amino acid
Explanation: Amino acids link together to form proteins, essential for cell function.Which gas is found in the greatest quantity in Earth’s atmosphere?
a) Oxygen b) Carbon dioxide c) Nitrogen d) Argon
Answer: c) Nitrogen
Explanation: Nitrogen makes up around 78% of the Earth’s atmosphere.In an electric circuit, which device allows the flow of electricity?
a) Battery b) Switch c) Bulb d) Fuse
Answer: b) Switch
Explanation: A switch controls the flow of electricity in a circuit, allowing it to be turned on or off.Which part of the brain is responsible for coordination and balance?
a) Cerebrum b) Medulla c) Cerebellum d) Hypothalamus
Answer: c) Cerebellum
Explanation: The cerebellum helps coordinate muscle movements and maintain balance.What is the main reason for the occurrence of seasons on Earth?
a) Earth’s rotation on its axis b) Earth’s tilt on its axis c) Earth’s distance from the Sun d) The Moon’s gravity
Answer: b) Earth’s tilt on its axis
Explanation: Earth’s axial tilt leads to varying sun angles, causing seasonal changes.
Which scientist is known as the “Father of Chemistry”?
a) Isaac Newton b) Albert Einstein c) Antoine Lavoisier d) Galileo Galilei
Answer: c) Antoine Lavoisier
Explanation: Lavoisier is known as the “Father of Chemistry” for his work in defining elements and chemical reactions.What is the unit of measurement for sound intensity?
a) Ampere b) Joule c) Newton d) Decibel
Answer: d) Decibel
Explanation: Sound intensity is measured in decibels, reflecting the sound’s volume or loudness.Which planet in the solar system is famous for its prominent ring system?
a) Jupiter b) Uranus c) Neptune d) Saturn
Answer: d) Saturn
Explanation: Saturn is known for its extensive ring system, composed of ice particles and rock.The chemical symbol ‘Fe’ represents which element?
a) Gold b) Iron c) Silver d) Lead
Answer: b) Iron
Explanation: The symbol ‘Fe’ stands for iron, derived from its Latin name “ferrum.”What is the hardest natural substance on Earth?
a) Gold b) Iron c) Diamond d) Platinum
Answer: c) Diamond
Explanation: Diamond is the hardest natural material, due to its strong carbon bond structure.Which vitamin is essential for the clotting of blood?
a) Vitamin A b) Vitamin D c) Vitamin E d) Vitamin K
Answer: d) Vitamin K
Explanation: Vitamin K plays a crucial role in blood clotting and wound healing.The device used to measure atmospheric pressure is called:
a) Thermometer b) Barometer c) Anemometer d) Hygrometer
Answer: b) Barometer
Explanation: A barometer measures atmospheric pressure, important for weather forecasting.What is the boiling point of water in Fahrenheit?
a) 100°F b) 150°F c) 212°F d) 250°F
Answer: c) 212°F
Explanation: Water boils at 212°F (100°C) under standard atmospheric pressure.Who discovered the law of gravitation?
a) Albert Einstein b) Isaac Newton c) Galileo Galilei d) Niels Bohr
Answer: b) Isaac Newton
Explanation: Newton formulated the law of universal gravitation, explaining how objects attract each other.In what form do bees communicate with each other?
a) Sound waves b) Vibrations c) Light signals d) Dances
Answer: d) Dances
Explanation: Bees perform a “waggle dance” to communicate the location of food to other bees.
- Which scientist formulated the Theory of Relativity?
a) Isaac Newton
b) Albert Einstein
c) Niels Bohr
d) Michael Faraday
Answer: b) Albert Einstein
Explanation: Albert Einstein developed the Theory of Relativity, which includes the famous equation E=mc2E=mc^2.
- What is the primary source of energy for Earth’s climate system?
a) Wind
b) Water
c) Sun
d) Volcanoes
Answer: c) Sun
Explanation: The Sun provides the energy that drives Earth’s weather, climate, and supports life through photosynthesis.
- Which of the following has the highest pH value?
a) Vinegar
b) Lemon juice
c) Baking soda
d) Soap
Answer: d) Soap
Explanation: Soap is basic and has a high pH level compared to acidic substances like vinegar and lemon juice.
- Which gas is used in the process of photosynthesis?
a) Oxygen
b) Nitrogen
c) Carbon Dioxide
d) Helium
Answer: c) Carbon Dioxide
Explanation: Plants take in carbon dioxide from the air and use it to produce glucose and oxygen during photosynthesis.
- Which of the following has the highest boiling point?
a) Water
b) Alcohol
c) Mercury
d) Ethanol
Answer: c) Mercury
Explanation: Mercury has a high boiling point compared to common liquids like water, alcohol, and ethanol.
- Which vitamin is produced by the body when exposed to sunlight?
a) Vitamin A
b) Vitamin B
c) Vitamin C
d) Vitamin D
Answer: d) Vitamin D
Explanation: The skin synthesizes Vitamin D when exposed to sunlight, which is essential for bone health.
- What is the process of converting water vapor into liquid water called?
a) Evaporation
b) Transpiration
c) Condensation
d) Sublimation
Answer: c) Condensation
Explanation: Condensation is the process in which water vapor cools and changes into liquid, forming clouds and dew.
- Which metal is most commonly used in electrical wiring?
a) Silver
b) Iron
c) Copper
d) Aluminum
Answer: c) Copper
Explanation: Copper is widely used in electrical wiring due to its excellent conductivity and flexibility.
- What is the process by which plants lose water through small openings in their leaves?
a) Respiration
b) Photosynthesis
c) Transpiration
d) Evaporation
Answer: c) Transpiration
Explanation: Transpiration is the loss of water vapor through stomata in plant leaves, aiding in nutrient transport.
- What is the primary gas found in the atmosphere of Mars?
a) Oxygen
b) Nitrogen
c) Methane
d) Carbon Dioxide
Answer: d) Carbon Dioxide
Explanation: Mars’ atmosphere is composed mostly of carbon dioxide, unlike Earth’s nitrogen-rich atmosphere.
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