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प्रश्न
Select the correct answer from the choice in the bracket.
The positively charged particle of an atom.
पर्याय
electron
proton
neturon
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उत्तर
proton
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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
Define the term: Element
Write the Chemical Name of the Following and Also Give Their Molecular Formulae:
Sand
Name: a Non-metal Which is a Good Conductor of Electricity.
Define Elements.
Give two examples of Non-metals.
How is sodium chloride different from its constituent elements, sodium and chlorine in its properties? Justify.
Name: Three different forms of carbon
Give one use of the following substance:
Brass
Give the name of the radical - OH
Complete the statement given below by filling in the blank with the correct word.
An element is a pure substance which cannot be broken down by physical or _________ methods.
Complete the statement given below by filling in the blank with the correct word.
From the elements nitrogen, chlorine, bromine, the element present in the atmosphere is ________.
Write the names of elements from the following symbol:
Pt
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?
There are ______ number of known elements.
Give two example of elements.
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 other than carbon that shows allotropy.
Reason out
Elements are called semimetals.
How are elements classified?
