Advertisements
Advertisements
प्रश्न
Name: A form of carbon used as a gem
Advertisements
उत्तर
Diamond is used as a gem.
APPEARS IN
संबंधित प्रश्न
Tick the most appropriate answer.
How many times is a proton heavier than an electron?
- 1500
- 1800
- 1840
- none of these
Name: the Hardest Naturally Occurring Substance
Classify the following substances into elements and compounds
Mercury, sulphur, sugar, water, sand, gold, carbon, oxygen, alcohol, iron, marble, baking soda.
Name: Two substances used to make electric wires
Indicate whether the following statement is true or false:
Elements are made up of compounds
Tick (√) the correct alternative from the choice given for the following statement
A metal which is brittle
The important physical properties of substances are colour, odour, nature, density & solubility in water.
Name – a gas with a pungent, choking odour which is lighter than air
‘An atom is the basic unit of an element’. Draw a diagram of an atom – divisible as seen today.
Select the correct answer from the choice given below to complete the sentence :
Dust in air is an example of _________ mixture.
Differentiate metals and non-metals.
