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प्रश्न
Tick (√) the correct alternative from the choice given for the following statement
The hardest naturally occurring substance
पर्याय
Oxygen
Diamond
Zinc
Graphite
Gold
उत्तर
Diamond
APPEARS IN
संबंधित प्रश्न
Give two examples of the following.
Non-metals which are solids
Fill in the blank
A metal which is a liquid at room temperature is _______.
Fill in the blank
The most abundant element in the atmosphere is _______.
Tick (√) the correct alternative from the choice given for the following statement.
The compound used as common salt is
State what are radicals. Give the names of the radicals –
(a) NO3
(b) OH
(c) SO4
(d) CO3
Complete the statement given below by filling in the blanks with the correct words.
From the elements – He, Br, Pt, and O; the element which is metallic is ____, an inert element is ____, forms a triatomic molecule is ____, is liquid at room temperature is_ ___.
Write the names of elements from the following symbol:
Ti
Define the term ‘compound’. In the compound carbon dioxide – the elements carbon & oxygen are combined in a fixed ratio. Explain.
Give two example of elements.
An element is sonorous and highly ductile. Under which category would you classify this element? What other characteristics do you expect the element to possess?
