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CBSE Questions for Class 6 Chemistry Sorting Materials Into Groups Quiz 3 - MCQExams.com
CBSE
Class 6 Chemistry
Sorting Materials Into Groups
Quiz 3
Four different substances are categorised based on their properties in the given flowchart identify the substances.
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P-Oil, Q-Common salt, R-Matchstick S-Coin
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P-Common salt, Q-Glycerine, R-Coin, S-Matchstick
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P-Glycerine , Q-Common salt, R-Coin, S-Matchstick
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P-Glycerine, Q-Sand, R-Coin, S-Matchstick
Find the odd one out on the basis of the appearance of an object.
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Paper
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Cardboard
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Iron
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Playing cards
Explanation
Paper, cardboard, playing cards can be tampered or burnt, i.e the level of hardness of these three objects is very low. Iron, on the other hand, is very hard and cannot be tampered by bare hands.
Which of the following object(s) can be made from steel?
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Cupboard
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Table
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Chair
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All of the above
Explanation
Steel is an important material that is used on a very large scale in modern industry due to its high durability and strength. It is also used to manufacture steel tables, chairs, cupboards, fans, utensils, etc. Thus answer is option D.
While doing an activity in class, teacher asked paheli to handover a translucent material which among the following material will paheli pick and give her teacher?
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Glass tumbler
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Mirror
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Muslin cloth
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Aluminium foil
Explanation
Glass tumbler is a transparent material. Mirror and aluminium foil are opaque objects.
Muslin cloth is a translucent material. Hence, option C is correct.
Boojho finds a bag containing the following materials
(i) mirror (ii) paper stained with oil (iii) magnet (iv) glass spectacles.
Help Boojho in finding out the material(s) which is/are opaque.
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(i) only
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(iv) only
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(i) and (iii)
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(ii) and (iv)
Explanation
Those substances or materials which do not allow light to pass through them are called opaque.
The mirror and magnet are opaque objects because they do not allow light to pass through them.
Paper stained with oil is a translucent material as some amount of light passes through it.
Glass spectacles are completely transparent.
Hence, option $$C$$ is correct.
An iron nail is kept in each of the following liquids. In which case would it lose it's shine and appear dull?
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Mustard oil
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Soft drink
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Coconut oil
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Kerosene
Explanation
An iron nail kept in a soft drink would lose its shine and appear dull because a soft drink contains carbonic acid which reacts with iron, so it gives a dull appearance.
Iron nail has no reaction with mustard oil, coconut oil, and kerosene, so it does not lose its shine when kept in these solutions.
Therefore, the correct option is $$B$$.
A brief information about three substances is given:
X: Transparent, smooth to touch and insulator.
Y: Yellow in colour, good conductor of heat and electricity, lustrous.
Z: Man made material, an insulator, used to make switches and handles of cooking utensils.
X, Y and Z could be respectively
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Water, copper, aluminium
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Glass, gold, plastic
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Paper, aluminium, copper
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Silver, gold, copper
The given flowchart was prepared by Natasha for sorting materials into different groups. She handed over the chart to her teacher with few blanks. Fill in the blanks from the given options.
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P- Butter, Q- Honey, R- Salt, S- Metal ball, T- Kerosene oil, U- Pencil
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P- Salt, Q- Honey, R- Butter, S- Pencil, T- Kerosene oil, U- Metal ball
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P- Salt, Q- Butter, R- Honey, S- Metal ball, T- Pencil, U- Kerosene oil
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P- Pencil, Q- Honey, R- Butter, S- salt, T- Kerosene oil, U- Pencil
Three groups of materials are given below :
I: Salt, sugar, flour
II: Copper, gold, silver
III: Petrol, kerosene, paper
Identify the property common to each group.
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I- Solid, II- Bad conductors of heat, III- Liquid
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I- Edible, II-non-metallic, III- Non-inflammable
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I- Edible, II- Metallic, III- Inflammable
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I- Solid, II-Good conductors of heat, III- Non-inflammable
Explanation
Salt, sugar, flour - Edible
Copper, gold, silver - Metallic
Petrol, kerosene, paper - Inflammable.
Hence the correct option is C.
Translucent substance __________.
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allows light to pass through it completely
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allows light to pass through it partially
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does not allow the light to pass through it
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None of these
Explanation
Those materials that allow some light to pass through them are called translucent materials. Examples include frosted glass and wax paper.
Which among the following are commonly used for making a safety pin?
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Wood and glass
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Plastic and glass
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Leather and plastic
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Steel and plastic
Explanation
Safety pins are made of steel and plastic. The entire body of safety pin is composed of steel and the head is made up of plastic.
Which of the following statements is not true?
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Materials are grouped for convenience.
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Materials are grouped to study their properties.
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Materials are grouped just for fun.
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Materials are grouped according to their uses.
Explanation
Materials are not grouped just for fun. There is a reason to group them. Grouping materials makes it convenient to store and retrieve them in the right manner, it makes it easier to study their properties and store and utilise this information. There are several ways in which we can group materials. For instance, we can group them according to their uses, or their colours, or their properties, or their behaviour, and so on.
Which of the following material is not lustrous?
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Gold
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Silver
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Wood
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Diamond
Explanation
Lustrous materials are those materials that have a shiny appearance of metal or are quite bright. These materials are quite used in jewelry. Gold, silver, and diamond are lustrous materials. Wood is non-lustrous material.
Option C is correct.
Which of the following has no definite volume?
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wood
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oxygen
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paper
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cloth
Explanation
Not defined volume is a characteristic of gases.
Among the given options, only oxygen is a gas.
Hence, option B is correct answer.
From the below statements select correct one.
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Every substance has a definite mass.
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Every substance has a definite shape.
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Every substance has a definite volume.
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None of these
Explanation
Every substance has a definite mass as every substance occupies space, thus it always has a definite mass.
Hence, option A is correct.
Find the odd one out from the following
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Tawa
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Spade
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Pressure cooker
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Eraser
Explanation
Tawa, Spade, and Pressure cooker are made of metals, whereas the eraser is made from rubber. So the odd one out of the given option is the eraser. Hence option D is correct.
Which pair of substance among the following would float in a tumbler half filled in water?
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Cotton, thermocol
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Feather, plastic ball
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Nail, oil drops
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Rubber band, coin
Explanation
From the given objects, cotton, nail, and coin do not float in water. So, options A, C and D are excluded. Both feather and plastic ball float on water.
So, option B is correct.
You are provided with the following materials.(i) Magnifying glass (ii) Mirror (iii) Stainless steel plate (iv) Glass tumbler
Which of the above materials will you identify as transparent?
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(i) and (ii)
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(i) and (iii)
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(i) and (iv)
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(iii) and (iv)
Explanation
As we know that one side of the mirror is coated with aluminium metal or other reflecting material hence it is not transparent.
Stainless steel plate is not transparent but it shows glowing nature.
Magnifying glass and glass tumbler are transparent which means, we can see object beyond the glass.
Hence, option $$C$$ is correct.
Pick one material from the following which is soluble in water.
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Chalk powder
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Tea leaves
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Glucose
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Saw dust
Explanation
Chalk powder, tea leaves and saw dust will not mix with water and are insoluble. Glucose gets completely dissolved in water and is soluble in it. So, the correct option is B.
Study the flow chart given. What can be placed at P, Q, R and S?
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P-Window pane, Q- Ceramic tile, R- Iron rod, S- Spectacle lens
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P- Iron rod, Q- Rubber band, R- Ceramic tile, S- Spectacle lens
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P- Iron rod, Q- Rubber band, R- Window pane, S- Ceramic tile
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P- Ceramic, Q- Window pane, R- Rubber band, S- Iron rod
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