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प्रश्न
Name A substance used as an insulator.
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उत्तर
Plastic is used as insulator as it is bad conductor of electricity
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संबंधित प्रश्न
Classify the following substances into compounds and mixtures:
Match the columns.
| column A | column B |
|
1. to separate grain from chaff |
a. filtration |
| 2. to saparate sawdust from water | b. sedimentation and deeantation |
| 3. to separate iodine from sodium chloride | c. winnowing |
| 4. to separate iron fillings from sand | d.sublimation |
|
5. it is used to separate sand and water |
e maganetic separation |
|
|
f .handpicking |
Name: a Metal Which is a Poor Conductor of Electricity.
Give the symbols of: Carbon, calcium, copper, chlorine, cobalt, argon.
Complete the statement with the correct words.
_______ are chemicals which are hydroxide (or oxides) of ______ eg. sodium hydroxide.
Select the correct answer from the choice given below.
An impure substance
Write the names of elements from the following symbol:
Br
What are elements? What are they made of?
Why are utensils made up of aluminium and brass?
Give an account of elements known to us.
