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प्रश्न
The important physical properties of substances are colour, odour, nature, density & solubility in water.
Name - a poisonous gas almost as heavy as air.
उत्तर
A poisonous gas almost as heavy as air is Carbon monoxide
संबंधित प्रश्न
Write true or false
A heterogeneous mixture has a uniform composition throughout the mixture
Give Two Examples for Each of the Following: Non-metals
Define a pure substance. How many types of pure substances do you know?
Give two examples of Non-metals.
State the number of atoms of each element, present in \[\ce{HNO3}\].
Also name the compound.
Answer the following question:
What do you understand by the statement: ‘metals are ductile and malleable’?
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.
The unreactive non-metallic element
Write the names of elements from the following symbol:
Fe
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.
