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All questions of Class 6 for OPSC OCS (Odisha) 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.

Which one of the following is not an example of natural fibre?
  • a)
    Rayon
  • b)
    Cotton
  • c)
    Wool
  • d)
    Silk
Correct answer is option 'A'. Can you explain this answer?

Rithika Roy answered
Silk, cotton and wood are obtained from natural sources either plant or animal but rayon is a synthetic fibre.

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.

Q.Silkworms feeds on leaves of
a)Guava
b)Mulberry
c)Banana
d)Mango
Correct answer is option 'B'. Can you explain this answer?

Kavya Rane answered
Silkworms can ONLY survive on mulberry leaves (genus Morus), sometimes Osage orange (Maclura pomifera) or silkworm food, which is made from mulberry leaves. Your worms may eat other types of vegetation, such as lettuce leaves, but it will kill them.

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.

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.

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.

Silk thread is obtained from
  • a)
    Cocoon
  • b)
    Caterpillar
  • c)
    Pupa
  • d)
    Adult moth
Correct answer is option 'A'. Can you explain this answer?

Meera Reddy answered
The protein fiber of silk is composed mainly of fibroin and is produced by certain insect larvae to form cocoons. The best-known silk is obtained from the cocoons of the larvae of the mulberry silkworm Bombyx mori reared in captivity (sericulture).

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.

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.

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.

Which among the following materials are not lustrous
  • a)
    Silver
  • b)
    Gold
  • c)
    Diamond
  • d)
    Wood
Correct answer is option 'D'. Can you explain this answer?

Pritam Shah answered
Those substances that have shining surface are called as lustrous substance. Diamond, gold and silver are lustrous

Can you explain the answer of this question below:

Which type of material is used to make wind screen of a car?

  • A:

    Transparent

  • B:

    Translucent

  • C:

    Opaque

  • D:

    Semi-transparent

The answer is A.

Bijoy Goyal answered
Material Used to Make Windscreen of a Car

The windscreen of a car is an essential component that protects the driver and passengers from wind, rain, dust, and other external elements. It is a transparent screen made of a special type of material that provides excellent visibility to the driver. The material used to make the windscreen of a car is:

Transparent

Transparent materials allow light to pass through them without scattering the light. The windscreen of a car is made of transparent materials such as glass, polycarbonate, or acrylic. The choice of material depends on the manufacturer's preference and the type of car. Glass is commonly used in high-end cars, while polycarbonate and acrylic are used in budget cars.

Glass

Glass is a brittle and transparent material made by melting silica with other materials. The glass used in car windscreens is tempered glass, which is heated and cooled rapidly to make it stronger and more durable. Tempered glass is resistant to impact and shattering, making it an ideal material for car windscreens.

Polycarbonate

Polycarbonate is a transparent and lightweight thermoplastic material that is commonly used in car windscreens. It is highly resistant to impact, shattering, and UV radiation, making it an excellent material for car windscreens. Polycarbonate is also more flexible than glass, making it less prone to cracking or breaking.

Acrylic

Acrylic is a transparent thermoplastic material that is commonly used in budget cars. It is less expensive than glass and polycarbonate, making it an affordable option for car windscreens. However, acrylic is less durable than glass and polycarbonate and is more prone to scratching and cracking.

Conclusion

In conclusion, the material used to make the windscreen of a car is transparent. Glass, polycarbonate, and acrylic are the most commonly used materials for car windscreens. The choice of material depends on the manufacturer's preference and the type of car.

The process of removal of fleece from the body of sheep is called
  • a)
    Cleaning
  • b)
    Carding
  • c)
    Shearing
  • d)
    Removal
Correct answer is 'C'. Can you explain this answer?

Vandana Mukherjee answered
Sheep shearing is the process by which the woollen fleece of a sheep is cut off. The person who removes the sheep's wool is called a shearer. Typically each adult sheep is shorn/sheared once each year.
The annual shearing most often occurs in a shearing shed, a facility especially designed to process often hundreds and sometimes more than 3,001 sheep per day.

Sheep are shorn in all seasons, depending on the climate, management requirements and the availability of a woolclasser and shearers.

Q. The most beautiful part of plant is
a)Branches
b)Leaves
c)Flowers
d)Stems
Correct answer is option 'C'. Can you explain this answer?

Vikas Choudhury answered
Flower is the most beautiful part of a plant. It changes into fruit.
Most of the plants bear flowers. Flowers are of different shapes, sizes and colors. Some flowers smell good. Some of the good smelling flowers are rose, jasmine, lotus, sunflower, apple flower.

The joint which helps in rotating a body in all directions is called _______
  • a)
    Hinge joint
  • b)
    Ball and Socket Joint
  • c)
    Pivot joint
  • d)
    Fixed Joint
Correct answer is option 'B'. Can you explain this answer?

Shaila Patel answered
The ball and socket joint, the bones can be turned in any direction i.e. forward and backward, side to side and even rotated. The ball and socket joints occur at the shoulder and hips in our body.

Snail moves with the help of
  • a)
    Whole body
  • b)
    Bone
  • c)
    Shell
  • d)
    Muscular foot
Correct answer is option 'D'. Can you explain this answer?

Arjun Desai answered
A snail uses its single long, muscular foot to crawl on a layer of mucus-like slime that it secretes. ... The waves move much faster than the snail itself, and generate enough force to push the snail forward.

What deficiency disease is caused by lack of vitamin B1 in the diet?
  • a)
    Beriberi
  • b)
    Anaemia
  • c)
    Scurvy
  • d)
    Rickets
Correct answer is option 'A'. Can you explain this answer?

Dr Manju Sen answered
Beriberi is a deficiency disease caused by the lack of vitamin B1 in the diet. It is characterized by symptoms such as weight loss and weak muscles. Foods rich in vitamin B1, such as beans, meat, eggs, and corn, are essential to prevent beriberi.

Science of rearing silk is called
  • a)
    Tissue culture
  • b)
    Sericulture
  • c)
    Agriculture
  • d)
    apiculture
Correct answer is 'B'. Can you explain this answer?

Niharika Mukherjee answered
The science of rearing silk is called sericulture. Sericulture includes rearing, processing and reeling the silk.

Lodestone is a
  • a)
    Soft stone having shining surface
  • b)
    Stone having magnetic property
  • c)
    Stone having iron
  • d)
    Stone having dark black colour
Correct answer is option 'B'. Can you explain this answer?

Sanskriti Tiwari answered
A Lodestone is a naturally occurring piece of magnetic iron oxide. It is often bound in a brass frame, and is oriented to place the magnetic poles at the ends. 
 The word magnet comes from the region called Magnesia in Asia Minor. The word lodestone comes from the use of pieces of ore from Norway and Sweden which were suspended and used as guiding or leading stone; the Saxon word L�den means "to lead".
This example is from the apparatus collection at Colby College.

Can you explain the answer of this question below:

If a substance can be beaten into thin sheet, it is called

  • A:

    Brittle

  • B:

    Malleable

  • C:

    Good conductor

  • D:

    Ductile

The answer is B.

Pooja Shah answered
The property of metals by which they can be beaten into thin sheets is called malleability. Most metals are malleable. Gold and silver are the best malleable metals and can be hammered into very fine sheets or foils. 

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

Mainak Mukherjee answered
Pulses include beans, lentils and peas.They're a cheap, low-fat source of protein, fibre, vitamins and minerals, and count towards your recommended 5 daily portions of fruit and vegetables. A pulse is an edible seed that grows in a pod.

The plant which takes the support of the neighbouring structures and climbs up is ----?
  • a)
    Tree
  • b)
    Shrub
  • c)
    Creeper
  • d)
    Climber
Correct answer is option 'D'. Can you explain this answer?

Swara Mukherjee answered
Creepers and Climbers
There are some plants with weak stems that cannot stand upright and spread on the ground.  These are called creepers, while those that take support on neighbouring structures and climb up are called climbers. These are different from the herbs, shrubs and trees. 

Can you explain the answer of this question below:

Which plant is the example of a herb?

  • A:

    Mango

  • B:

    China rose

  • C:

    Wheat

  • D:

    None

The answer is C.

Nishanth Iyer answered
Herb as a Plant

A herb is a plant that is used for medicinal, culinary or aromatic purposes. These plants are usually small in size and lack woody stems. They can be annual, biennial or perennial. Herbs are usually grown for their leaves, flowers or roots.

Example of a Herb

The correct answer to this question is option 'C' - Wheat. Wheat is an example of a herb. It is an annual grass that belongs to the Poaceae family. Wheat is a cereal crop that is grown for its seeds. It is one of the most important staple crops in the world and is used to make a variety of food products such as bread, pasta, cakes, and biscuits.

Characteristics of Wheat

- Wheat is an annual plant that completes its life cycle in one growing season.
- It has a hollow stem and narrow leaves.
- The flowers of wheat are arranged in spikelets and are usually self-pollinated.
- The seeds of wheat are small and hard and are enclosed in a husk.

Importance of Wheat

- Wheat is an important source of carbohydrates, protein, and dietary fiber.
- It is a staple food in many parts of the world and is used to make a variety of food products.
- In addition to food, wheat is also used for animal feed and as a raw material for biofuels.

Conclusion

In conclusion, wheat is an example of a herb that is grown for its seeds. It is an important staple crop that is used to make a variety of food products. Herbs are an important part of the plant kingdom and are used for various purposes.

Chapter doubts & questions for Class 6 - 6 Months Preparation Course for OPSC 2026 is part of OPSC OCS (Odisha) exam preparation. The chapters have been prepared according to the OPSC OCS (Odisha) exam syllabus. The Chapter doubts & questions, notes, tests & MCQs are made for OPSC OCS (Odisha) 2026 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests here.

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