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All questions of Class 6 Science for CTET & State TET Exam

The part of a banana plant not used as food is
  • a)
    flower
  • b)
    fruit
  • c)
    root
  • d)
     inner stem
Correct answer is option 'C'. Can you explain this answer?

Aarya Joshi answered
The parts of the banana plant that you can eat are inner stem, flower, raw banana and ripe banana fruit.
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Can you explain the answer of this question below:

Green plants prepare their own food, hence they are called as

  • A:

    Decomposers

  • B:

    Autotrophs

  • C:

    Parasites

  • D:

    Heterotrophs

The answer is b.

Kunal Das answered
Green plants have the ability to prepare their own food and this is the reason why they are called autotrophs. 
The chlorophyll which is present in the leaves is the main reason for the production of food in the plants and it is the reason for the greenery of the leaves too.

Which one is not a function of food:
  • a)
    Repair body parts
  • b)
    Gives us energy
  • c)
    Help in growth
  • d)
    Prepare protein
Correct answer is 'D'. Can you explain this answer?

Sneha Jha answered
As we all know that food help us to repair the damage part of our body, Gives us food, Help in growth. But as we know that protein is synthesis in our body not prepare.

Curd is formed by the action of
  • a)
    Protozoa
  • b)
    Bacteria
  • c)
    Fungus
  • d)
    Algae
Correct answer is option 'B'. Can you explain this answer?

Rajesh Khatri answered
The increased acidity causes the milk proteins (casein) to tangle into solid masses, or curds. Milk that has been left to sour (raw milk alone or pasteurized milk with added lactic acid bacteria) will also naturally produce curds, and sour milk cheeses are produced this way.

Which of the following gives eggs?
  • a)
    Cow
  • b)
    Goat
  • c)
    Duck
  • d)
    Donkey
Correct answer is option 'C'. Can you explain this answer?

Anjana Rane answered
 The average number of eggs a duck can lay each year depends largely on the breed of duck. As with other types of poultry, some duck breeds are raised for meat, some for eggs and some to produce a balance of both. Good egg-laying duck breeds can out-lay chickens.

Vitamins and minerals are
  • a)
    Body building food
  • b)
    All of these
  • c)
    Protective nutrients
  • d)
    Energy giving food
Correct answer is option 'C'. Can you explain this answer?

Kiran Mehta answered
Protective food are rich in vitamin and minerals that protect us from various diseases caused due to deficiency of of vitamins and minerals.

Which one of the following is not a natural fibre?
  • a)
    Nylon
  • b)
    Cotton
  • c)
    Flax
  • d)
    Jute
Correct answer is option 'A'. Can you explain this answer?

Kabir Verma answered
  • Jute, cotton and flax are natural fibre but nylon is a synthetic fibre or man-made fibre. 
  • Natural fibres are the fibres that are obtained from plants and animals.

Pulses are rich source of
  • a)
    Minerals
  • b)
    Roughages
  • c)
    Proteins
  • d)
    Fibre
Correct answer is 'C'. Can you explain this answer?

Aruna Singh answered
Pulses are a low fat source of protein with high levels of protein and fibre. 
Pulses also contain important vitamins and minerals like iron, potassium and folate.

Select the correct match
  • a)
    Natural fibre – cotton
  • b)
    Synthetic fibre – silk
  • c)
    Animal fibre – jute
  • d)
    Plant fibre – wool
Correct answer is option 'A'. Can you explain this answer?

Vikram Kapoor answered
  • Cotton is a natural fibre.
  • Wool is not a plant fibre. 
  • Jute is a plant fibre.
  • Silk is a fibre obtained from cocoons of insects and is a natural fibre.

Choose the opaque materials form the following
  • a)
    Thin sheet of plastic
  • b)
    Glass container.
  • c)
    Wooden door
  • d)
    Clear water
Correct answer is 'C'. Can you explain this answer?

Vikas Choudhury answered
Wooden door is an opaque object as it has all the properties of one:
1. Opaque materials are those through which light cannot pass at all.
2. We cannot see through these objects. They can also be called not-see-through objects.
3. The color of this material depends on the light it absorbs.
4. An object on the other side of this material is not visible at all.

Spices provide
  • a)
    Flavour
     
  • b)
    Vitamins
  • c)
    Energy
  • d)
    Proteins
Correct answer is 'A'. Can you explain this answer?

Vikas Choudhury answered
Allspice is pungent and fragrant. It is not a blend of "all spices," but its taste and aroma remind many people of a mix of cloves, cinnamon, and nutmeg. Christopher Columbus discovered Allspice in the Caribbean. Although he was seeking pepper, he had never actually seen real pepper and he thought Allspice was it.

Q. The movement of earth around the sun is an example of
a)Oscillatory motion
b)Circular motion
c)Translatory motion
d)Periodic motion
Correct answer is 'D'. Can you explain this answer?

Rajesh Khatri answered
The answer is b.
A body moving along a circular pat is said to have a circular motion.
The distance of the moving body remains constant from a fixed point or axis, called the axis of rotation. The moving body changes its position during the motion. Thus the  movement of earth around the sun is an example of Circular motion.

First man-made synthetic fibre is
a)Cotton
b)Nylon
c)Rayon
d)Polyester
Correct answer is option 'B'. Can you explain this answer?

Rajesh Khatri answered
Nylon is a fabric that's woven from man-made fibers. Many clothes are made from nylon, as opposed to natural fibers like cotton, silk. Women's stockings are sometimes called nylons, but they were usually made from silk before the twentieth century invention of the cheaper and more durable nylon. Because nylon is a kind of sturdy woven plastic, it's also used to make things like car parts, food packaging, and the strings of instruments. Nylon, modeled on words like "cotton" and "rayon," is a completely made-up word, with no real roots.

Pollen grains are produced in side
  • a)
    Ovary
  • b)
    Stigma
  • c)
    Anther
  • d)
    Pistil
Correct answer is option 'C'. Can you explain this answer?

Alok Verma answered
The male sex cells of seed plants (flowering plants, conifers, and cycads) are contained in tough capsules called POLLEN. Pollen grains are produced by organs called anthers and must be transferred to the female parts of plants in order to form seeds. This process, called pollination, can be achieved in various ways. Some plants are assisted by animals that act as POLLINATORS. Others use the wind to take their pollen where it is needed.

Chemical changes are
  • a)
    Mostly reversible
  • b)
    Always irreversible
  • c)
    Always reversible
  • d)
    Mostly irreversible
Correct answer is option 'D'. Can you explain this answer?

Kiran Mehta answered
Chemical changes are changes that occur in the chemical properties of the substance like its flammability, radioactivity, etc. All chemical changes are mostly irreversible changes. Once the chemical properties of a substance are changed, it becomes another substance. Thus, it cannot return to its original state in most cases.

Select the translucent materials from the following?
  • a)
    Glass tumbler
  • b)
    Aluminium foil
  • c)
    Muslin cloth
  • d)
    Mirror
Correct answer is 'C'. Can you explain this answer?

Anjali Kapoor answered
Muslin cloth is the example of translucent cloth while tericot is the example of opaque cloth material. Any material which will be completely transparent will not be used as cloth material.

Milk giving animals are called
  • a)
    Drought animals
  • b)
    Domestic animals
  • c)
    Milch animals
  • d)
    Farmer animals
Correct answer is option 'C'. Can you explain this answer?

Aruna Singh answered
Animals bred solely for their milk are called milch animals. The animal which are capable of giving milk are called milch animals. For example- cows.

Which of the following fibre is not obtained from animals?
  • a)
    Leather
  • b)
    Wool
  • c)
    Silk cotton
  • d)
    Silk
Correct answer is 'C'. Can you explain this answer?

Kajal Shah answered
Silk cotton is a plant fiber from the KAPOK tree used for stuffing for pillows and lifejackets and insulation. Silk cotton is a big tree of 6070 feet tall and 1540 feet wide. It has a soft wood, red flowers, large number of seeds and smaller filaments, Its’s cotton i.e. Silk cotton is softer than the regular cotton.

Which one is not a transparent object?
  • a)
    Clean water
  • b)
    Glass
  • c)
    Thin sheet of plastic
  • d)
    Muddy water
Correct answer is option 'D'. Can you explain this answer?

Charvi Sen answered
The object through which light passes easily are called as transparent object. Clean glass, glass and thin sheet of plastic are transparent while muddy water is translucent.

Which one is not a natural source of water
  • a)
    River
  • b)
    Lake
  • c)
    Canal
  • d)
    Pond
Correct answer is option 'A'. Can you explain this answer?

Kunal Mehta answered
Correct option is (c) .
Dams, wells, tube wells, hand-pumps, canals, etc, are man-made sources of water. 

Digestion of food is a
  • a)
    Temporary change
  • b)
    Periodic change
  • c)
    Chemical change
  • d)
    Physical change
Correct answer is option 'C'. Can you explain this answer?

Aarya Joshi answered
Digestion of food is a chemical change as chemical action change takes place to break the complex food into simpler substance by action of enzymes.

Vitamin that is not present in milk is
  • a)
    Vitamin A
  • b)
    Vitamin B12
  • c)
    Vitamin C
  • d)
    Vitamin D
Correct answer is option 'C'. Can you explain this answer?

EduRev Class 6 answered

  • Vitamin C is not present in milk.
Vitamin C, also known as ascorbic acid, is a water-soluble vitamin that is not naturally present in milk. While milk is a good source of other essential nutrients like calcium and vitamin D, it does not contain vitamin C. This vitamin is commonly found in fruits and vegetables such as oranges, strawberries, bell peppers, and broccoli. It plays a crucial role in supporting the immune system, promoting healthy skin, and aiding in the absorption of iron from plant-based foods. If you are looking to increase your vitamin C intake, incorporating a variety of fruits and vegetables into your diet is essential.

All metals are ----------- of heat and electricity.
  • a)
    Insulator
  • b)
    Semi-conductor
  • c)
    Good conductor
  • d)
    Bad conductor
Correct answer is option 'C'. Can you explain this answer?

Kunal Mehta answered
In metals, some of the electrons (often one per atom) are not stuck to individual atoms but flow freely among the atoms. Of course, that's why metals are such good conductors of electricity.

Which nutrient help our heart to beat?
  • a)
    Vitamins
  • b)
    Protein
  • c)
    Carbohydrate
  • d)
    Calcium
Correct answer is option 'D'. Can you explain this answer?

Dr Manju Sen answered
Ghee and butter are derived from animal sources, specifically from milk. Therefore, they are categorized as animal fats. These fats primarily consist of saturated fats and are commonly used in cooking and food preparation.

Explain the following observations briefly:
An empty glass in fact is not empty.
  • a)
    Filled with water 
  • b)
    Filled with air
  • c)
    Not empty
  • d)
    Empty
Correct answer is option 'B'. Can you explain this answer?

Anita Menon answered
The glass which is empty is actually filled with air. And because air takes up space when an empty glass is inverted and inserted into a trough filled with water, the air is trapped within and it is no anyway for air to escape out.

The base of an electric cell is its ___________terminal.
  • a)
    Positive terminal
  • b)
    Negative terminal
  • c)
    Negative and positive
  • d)
    None of these
Correct answer is option 'B'. Can you explain this answer?

Varun Kapoor answered
Metal cap is the positive terminal and the metal disc is the negative terminal of the electric cell. An electric cell produces electricity from the chemicals stored inside it.

People living in coastal areas eat
  • a)
    Wheat, pulses and rice
  • b)
    Rice, meat of goat
  • c)
    Rice and fish
  • d)
    Maize and Bajara
Correct answer is option 'C'. Can you explain this answer?

Aruna Singh answered
They eat fish and rice most  because it helps them to earn money. So that they can eat it as it is available in plenty. It also gives us some vitamins proteins etc so.

Chapter doubts & questions for Class 6 Science - NCERT Textbooks (Class 6 to Class 12) 2025 is part of CTET & State TET exam preparation. The chapters have been prepared according to the CTET & State TET exam syllabus. The Chapter doubts & questions, notes, tests & MCQs are made for CTET & State TET 2025 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests here.

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