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प्रश्न
Name the technique that you use if only the solid component of a solution is required.
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उत्तर
Evaporation.
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संबंधित प्रश्न
Give one example for the following type of mixtures
solid-solid homogenous mixture.
Name: an Inert Gas
Give two examples of the following.
Metals which are soft
Define:
Atomicity
Give reason: Argon is filled in electric bulbs.
Fill in the blank
The most abundant element in the atmosphere is _______.
Indicate whether the following statement is true or false:
Metals can be polished.
Indicate whether the following statement is true or false:
Ozone is a triatomic molecule
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 – two coloured gases (with their colours)
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 blank with the correct word.
An element is a pure substance which cannot be broken down by physical or _________ methods.
Write the names of elements from the following symbol:
Cd
Write the names of elements from the following symbol:
Xe
Explain the difference between Metals and non-metals.
Select the correct answer to the statement given below:
A metalloid
Define the term ‘compound’. In the compound carbon dioxide – the elements carbon & oxygen are combined in a fixed ratio. Explain.
Select the correct answer from A, B, C, D & E for the statement given below :
A non-metal that is lustrous.
Differentiate between elements and compounds.
Oxygen is very essential for us to live. It forms 21% of air by volume. Is it an element or compound?
