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Science General Knowledge Questions for Class 6

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Here Are Some Science General Knowledge Questions for Class 6

What is the largest planet in our solar system?
Answer: Jupiter. Explanation: Jupiter is the fifth planet from the sun and the largest planet in our solar system.

Which gas is most abundant in the Earth’s atmosphere?
Answer: Nitrogen. Explanation: Nitrogen makes up about 78% of Earth’s atmosphere.

What is the smallest unit of life?
Answer: Cell. Explanation: Cells are the basic unit of life and are the smallest living things.

What is the process by which plants make their own food called?
Answer: Photosynthesis. Explanation: Photosynthesis is the process by which plants use sunlight to convert carbon dioxide and water into glucose (sugar) and oxygen.

What is the hard outer layer of bones called?
Answer: The cortex. Explanation: The cortex is the outer layer of bone tissue that provides strength and protection.

Which planet is known as the “Red Planet”?
Answer: Mars. Explanation: Mars is often called the “Red Planet” because of its reddish appearance in the night sky.

What is the basic unit of matter?
Answer: Atom. Explanation: An atom is the smallest unit of matter that retains the properties of an element.

What is the name of the smallest planet in our solar system?
Answer: Mercury. Explanation: Mercury is the smallest planet in our solar system.

What is the name of the process by which liquids turn into gas?
Answer: Evaporation. Explanation: Evaporation is the process by which a liquid turns into a gas.

What is the force that attracts all objects towards each other called?
Answer: Gravity. Explanation: Gravity is the force that attracts all objects towards each other.

What is the largest organ in the human body?
Answer: Skin. Explanation: The skin is the largest organ in the human body.

What is the name of the process by which plants release water vapor through their leaves?
Answer: Transpiration. Explanation: Transpiration is the process by which plants release water vapor through their leaves.

What is the name of the process by which an organism changes its form or structure to become better adapted to its environment?
Answer: Adaptation. Explanation: Adaptation is the process by which an organism changes its form or structure to become better adapted to its environment.

What is the name of the molecule that carries genetic information in cells?
Answer: DNA. Explanation: DNA (deoxyribonucleic acid) is the molecule that carries genetic information in cells.

What is the name of the process by which cells divide to create new cells?
Answer: Mitosis. Explanation: Mitosis is the process by which cells divide to create new cells.

What is the name of the planet that is closest to the Sun?
Answer: Mercury. Explanation: Mercury is the planet closest to the Sun in our solar system.

What is the name of the process by which a solid turns into a liquid?
Answer: Melting. Explanation: Melting is the process by which a solid turns into a liquid.

What is the name of the process by which a gas turns into a liquid?
Answer: Condensation. Explanation: Condensation is the process by which a gas turns into a liquid.

What is the name of the force that opposes motion between two surfaces in contact with each other?
Answer: Friction. Explanation: Friction is the force that opposes motion between two surfaces in contact with each other.

What is the name of the planet that is known for having a ring system?
Answer: Saturn. Explanation: Saturn is the planet in our solar system
What is the name of the largest organ in the human body?
Answer: Skin.
Explanation: The skin is the largest organ in the human body, comprising about 16% of body weight.

What is the name of the smallest bone in the human body?
Answer: Stapes bone.
Explanation: The stapes bone is the smallest bone in the human body and is located in the middle ear.

What is the process by which plants make their own food?
Answer: Photosynthesis.
Explanation: Photosynthesis is the process by which plants make their own food using carbon dioxide, water, and sunlight.

What is the name of the process by which living organisms break down food to release energy?
Answer: Respiration.
Explanation: Respiration is the process by which living organisms break down food to release energy.

What is the name of the gas that makes up about 78% of the Earth’s atmosphere?
Answer: Nitrogen.
Explanation: Nitrogen is the gas that makes up about 78% of the Earth’s atmosphere.

What is the name of the device that measures temperature?
Answer: Thermometer.
Explanation: A thermometer is a device that measures temperature.

What is the process by which a solid changes directly into a gas without passing through the liquid state?
Answer: Sublimation.
Explanation: Sublimation is the process by which a solid changes directly into a gas without passing through the liquid state.

What is the name of the force that pulls all objects toward the center of the Earth?
Answer: Gravity.
Explanation: Gravity is the force that pulls all objects toward the center of the Earth.

What is the name of the process by which an organism grows and develops?
Answer: Growth.
Explanation: Growth is the process by which an organism grows and develops.

What is the name of the body’s natural defense against disease-causing organisms?
Answer: Immune system.
Explanation: The immune system is the body’s natural defense against disease-causing organisms.

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1-The mid air swing of a spinning football can be explained on the basis of Bernoulli’s principles.

2-Light travels faster in air than in water.

3-Cobalt 60 is generally used in radiation theory because it emits gamma rays.

4- Chloroxylenol antiseptic compound is present in Dettol.

5- Calcium chloride is a compound that is a white solid which absorbs water vapour from the air.

6-Mercury metals forms an amalgum with other metals.

7- Mortar is a tick paste of cement, sand and water .

8- Silicon element forms the highest number of compounds in the periodic table

9-Stainless steel is an alloy of Iron, Chromium and Nickel.

10- How does addition of ethylene dibromide help to petrol? – Elimination of lead oxide.

11-Red Phosphorus is used in safety metals.

12- What do we call the process of separation of pure water from impurities? – Distillation.

13-Nitrous oxide is laughing gas.

14-From Pitchblende mineral is radium obtained.

15-Tetraethyl lead is used as Petrol additive.

16-The element common to all acids is Hydrogen.

17-Silicon Carbide is used for cutting very hard substances.

18- What is the name of gas which is present in both the natural gas and the biogas? – Methane.

19- With which liqued is anomalous expansion associated? – Water

20- What is alcohol obtairied in the saponification process? – Glycerol.

21-Which is used to dilute oxygen in the gas cylinders used by divers? – Helium.

22-Which is the nuclear particle having no mass and no charge, but only spin? – Neutrino.

23-Of which alloy the commonly used safety fuse-wire is made? – Alloy of Tin and Lead

24- Of which Container radioactive materials should be kept? – Pb

25- Ethanol containing 5% water By which name is it known? – Rectified spirit

26-Which is not an anaesthetic agent in surgical operations? – Acetone

27- What is the percentage of Nitrogen, present in ammonium sulphate? – 21%

28- Which metal can deposit copper from copper sulphate solution? – Iron

29- Sodium stearate is a salt and how is it used? – To make soap

30- Which are the two main constituents of granite? – Iron and silica

31- Which method of water purification does not kill microorganism? – Filtration

32- On heating, Gypsum loses certain percentage of its water content and what does it become? – Plaster of Paris

33- By which was the presence of Cobalt. in Vitamin B-12 established for the first time? – Borax-Bead test

34- The pH of fresh milk is 6. When it turns sour, what will be the pH? – Less than 6

35- Which group of gases contribute to the “Green House effect”? – Carbon dioxide and Methane

36- Which gase is supporter of combustion? – Oxygen.

37-The most abundant metal in the earth’s crust is Aluminium.

38-German Silver is an alloy of Zinc, Copper & Nickel.

39-The element present in the largest amount in rocks and minerals is Silicon.

40-The charcoal used to decolourise raw sugar is Wood charcoal