Advertisements
Advertisements
प्रश्न
Give a reason for the following statement:
Components in a mixture are present in varying proportions and not in a fixed proportion.
Advertisements
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.
APPEARS IN
संबंधित प्रश्न
Name: the Hardest Naturally Occurring Substance
Give the symbols of: Carbon, calcium, copper, chlorine, cobalt, argon.
Define:
Atomicity
Name A substance used as an insulator.
Give reason: A frying pan is made up of steel but its handle is made up of wood.
Give reason: Graphite is used to make a lead of the pencils.
Answer the following question:
What do you understand by the statement: ‘metals are ductile and malleable’?
Indicate whether the following statement is true or false:
All elements are artificially prepared
Indicate whether the following statement is true or false:
Noble gases are high reactive
Tick (√) the correct alternative from the choice given for the following statement.
Sulphur and carbon are
Complete the statement given below by filling in the blank with the correct word.
Element ______ has the symbol derived from its Latin name ‘Argentum’
Select the correct answer from the choice given below.
The unreactive non-metallic element
Select the correct answer from the choice given below.
An element which is a poor conductor of heat
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?
Differentiate between homogenous & heterogeneous mixtures.
State true of false. If false, give the correct statement.
Two different elements may have similar atoms.
Give an example for the elements derived from their Latin names.
Classify the substances given in Fig. 2.2 into elements and compounds
Give an account of elements known to us.
Reason out
Elements are called semimetals.
