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प्रश्न
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?
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उत्तर
Examples of mixtures we use in our daily life are- lemon and water, sugar and milk, salt and water, cereal and milk, cement, air, etc.
Examples of compounds we use in our daily life are- salt \[\ce{(NaCl)}\], sugar \[\ce{(C12H22O11)}\], baking powder \[\ce{(NaHCO3)}\], vinegar \[\ce{(CH3COOH)}\], ethanol, etc.
Examples of elements we use in our daily life are- aluminum, copper, iron, silver, gold, etc.
संबंधित प्रश्न
Tick the most appropriate answer.
The constituents of a mixture are present in
- a fixed ratio
- a variable ratio,
- the ratio of 2: 1
- none of these
Name A substance used as an insulator.
Answer the following question:
Why are copper and aluminium used to make electric wires?
The important physical properties of substances are colour, odour, nature, density & solubility in water.
Name - a poisonous gas almost as heavy as air.
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:
Pt
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.
______ is a mixture of gases.
