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प्रश्न
Give a reason for the following statement:
Components in a mixture are present in varying proportions and not in a fixed proportion.
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उत्तर
A mixture is an impure substance containing more than one element or compound, mechanically mixed together in any proportion and the mixture retains the properties of its constituents i.e. elements or compounds.
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संबंधित प्रश्न
Give one example for the following types of mixtures:
liquid-gas homogenous mixture
Give two applications of chromatography.
Name: a Metal Which is a Poor Conductor of Electricity.
Give three differences between metals and non-metals.
State the number of atoms of each element, present in \[\ce{HNO3}\].
Also name the compound.
Give one use of the following substance:
Iron
Fill in the blank
The most abundant element in the atmosphere is _______.
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
A metal which is brittle
The important physical properties of substances are colour, odour, nature, density & solubility in water.
Name - a poisonous gas almost as heavy as air.
State what are radicals. Give the names of the radicals –
(a) NO3
(b) OH
(c) SO4
(d) CO3
Give the name of the radical - NO3
Give the name of the radical - CO3
Write an answer to the following question in your own words.
Which elements (metals and non-metals), compounds and mixtures do we use in our day-to-day life?
Select the correct answer from A, B, C, D & E for the statement given below :
A diatomic molecule.
Select the correct answer from A, B, C, D & E for the statement given below :
A mixture consisting of elements & a compound.
Non-metal conducting electricity :______ :: Metal conducting electricity : Copper
Differentiate between elements and compounds.
______ is a mixture of gases.
Name the element which is used in toothpaste to strengthen our teeth.
