NCERT Class 6 Science Chapter 4: Sorting Material into Groups (NSO/NSTSE) doorsteptutor.com

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Dr. Manishika Jain explains NCERT Class 6 Science Chapter 4: Sorting Material into Groups
How to objects differ?
Shape (round - ball, glass marble)
Size
Color
Uses
Material - glass, plastic, metal, wood, cotton, leather (plastic objects - pen, boxes, toys)
Separate objects based on - made from paper/wood and not from it
Object can be made of one material or more than one material
Properties of Material
Based on Appearance
Wood versus iron, copper, aluminum
Subjects might shine & appear shiny
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Sorting Material into Group @0:04
Object Versus Material @0:14
Objects Differ @2:31
Properties of Material @2:52
Based on Appearance @2:56
Hardness @4:48
Soluble/Insoluble@6:45
Float or Sink @8:41
Transparency @9:28
#Presence #Transparency #Compressed #Material #Cardboard #Appearance #Hardness #Manishika #Examrace
Examrace is number 1 education portal for competitive and scholastic exam like UPSC, NET, SSC, Bank PO, IBPS, NEET, AIIMS, JEE and more. We provide free study material, exam & sample papers, information on deadlines, exam format etc. Our vision is to provide preparation resources to each and every student even in distant corders of the globe.
Dr. Manishika Jain served as visiting professor at Gujarat University. Earlier she was serving in the Planning Department, City of Hillsboro, Hillsboro, Oregon, USA with focus on application of GIS for Downtown Development and Renewal. She completed her fellowship in Community-focused Urban Development from Colorado State University, Colorado, USA. For more information - www.examrace.c...
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ma'am a cotton thread will sink or float in water? please tell ma'am pleaseeee

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it will float

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It will sink if it kept more than 10 min

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it will float, if its not moistened

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Mam how wooden box is translucent?

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Awesome explaination

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[@dr.satishchandratiwari1458]

Ma'am plastic is insulator ??
Plz tell me.

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yes.. it does not conduct electricity so its an insulator or bad conductor of electricity.

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[@yellapudevisravani6603]

mam at 4:06 paper is oject or material??paper being prepared by material??wood ia an object or naterial how would be the wood be prepared??

[@pochi3004]

Paper is object as wood makes paper.. Wood is material

[@astrielle446]

1. The paper at 4:06 is a Object. Paper is made from Wood. Wood is a material. It's simple common sense, just ask yourself what wood is made out of. Obviously, wood only, right? Also, wood isn't made by trees. It comes by trees. When we cut a tree and get a huge log out of it, it is known as wood. Wood is the material for making many things.
2. At 7:32 the Oil and Water density is different. You must have already learnt in 3rd or 4th class about density, right? Oil has a lighter density than water so that is why the oil doesn't mix. Sand is not water soluble, meaning sand cannot dissolve in water.
3. At 9:14... it's LITERALLY common sense?? Obviously, glass is the material. She did not have any other example so she used beaker.
4. Plastic box depends on how it was made. Not all plastic boxes are transparent. Please use your common sense.
5. Glass is literally a material, she told it in the video.

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Many more happy

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Mam plastic scale can also bent a little

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Thanks for knowledge please make complete series till 12as early as possible thanks again

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Very nice

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Very good explanation (; ) but i have a doubt - every glass is transperent from both sides?? Please answer my que

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Thanks!

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Ma'am eg of translucent objects should and could be frozen water and butter paper

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Yes! Of course

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Mam

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I request you that you should give Google subtitles in the video
Thank you

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Shiny things reflect sunlight.

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Ground glass is an ex of

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Tranlucent material

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Ma'am what is soluble and insoluble

[@dr.satishchandratiwari1458]

Soluble dissolves and insoluble doesn't.
Such as Pencil is insoluble in water and sugar is soluble in water.

[@mahimahara3584]

Soluble are the things that are mix with water ex salt, sugar and insoluble are the things that are not disolve in water ex grapes, pencil.

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Soluble - things that dissolve in water eg-sugar,
salt
Insoluble -things that do not dissolve in water eg- ✏️ pencil

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Soluble= Objects that dissolve in water
Insoluble=Objects that dont dissolve in water

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Card board, wood box comes under opaque madam....

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