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प्रश्न
Tick (√) the correct alternative from the choice given for the following statement.
Sulphur and carbon are
विकल्प
metals
non-metals
metalloids
noble gases
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उत्तर
non-metals
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संबंधित प्रश्न
Tick the most appropriate answer
Solutions are
- heterogeneous mixtures.
- compounds
- homogeneous mixtures.
- elements
Give one example for the following types of mixtures :
solid-liquid heterogenous mixture.
Tick (√) the correct alternative from the choice given for the following statement.
Gold is used to make jewellery because
Tick (√) the correct alternative from the choice given for the following statement
The most ductile metal.
Complete the statement given below by filling in the blank with the correct word.
An element is a pure substance which cannot be broken down by physical or _________ methods.
Select the correct answer from the choice given below.
An impure substance
Select the correct answer to the statement given below:
The chemical name for dinitrogen oxide [N20].
‘An atom is the basic unit of an element’. Draw a diagram of an atom – divisible as seen today.
Classify the following as elements and compounds.
Water, Common salt, Sugar, Carbon dioxide, Iodine and Lithium
Non-metals are usually poor conductors of heat and electricity. They are non-lustrous, non-sonorous, non-malleable and are coloured.
Name a non-metal other than carbon that shows allotropy.
