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प्रश्न
Select the correct answer to the statement given below:
The chemical name for dinitrogen oxide [N20].
विकल्प
Chalk
Oxygen
Silicon
Bromine
Nitrous oxide
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उत्तर
Nitrous oxide
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संबंधित प्रश्न
Define: Elements
Give one example for the following types of mixtures :
solid-liquid heterogenous mixture.
Give Two Examples for Each of the Following: Non-metals
State the number of atoms of C6H12O6
State the number of atoms of CaCO3
Name: Two substances used to make electric wires
Find the atomicity of the Following molecule:
Acetic Acid
Fill in the blank
A metal which is a poor conductor of electricity is _______.
Tick (√) the correct alternative from the choice given for the following statement.
All pure substances have
Tick (√) the correct alternative from the choice given for the following statement.
Sugar is a compound which consists of the elements
Tick (√) the correct alternative from the choice given for the following statement.
Gold is used to make jewellery because
Draw a labelled diagram of an atom including its nucleus, orbits & their contents.
Complete the statement given below by filling in the blank with the correct word.
The basic unit of an element is an __________.
Select the correct answer from the choice given below.
The type of molecule- bromine
Write the names of elements from the following symbol:
Zn
Differentiate between homogenous & heterogeneous mixtures.
Differentiate between elements and compounds.
Match the following.
| Atom | Building block of matter |
| Element | Atoms of different kinds |
| Compound | Atoms of the same kind |
| Molecule | Smallest unit of a substance |
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 which is required for combustion.
