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प्रश्न
Give two applications of chromatography.
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उत्तर
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संबंधित प्रश्न
Classify the following substances into compounds and mixtures:
Answer the following question:
Why are copper and aluminium used to make electric wires?
Tick (√) the correct alternative from the choice given for the following statement
A metal which is brittle
Give the name of the radical - NO3
Complete the statement with the correct words.
__________ are chemicals formed on reaction of a base with an _____ giving salt and water.
Select the correct answer from the choice given below.
The negatively charged particles in an atom
Write the names of elements from the following symbol:
Ir
Select the correct answer from A, B, C, D & E for the statement given below :
A non-metal that is lustrous.
Give a reason for the following statement :
The filter paper made into a cone & placed in a funnel for filtering out the solid particles in a solid-liquid mixture should be moistened before placing it.
Higher Order Thinking Skills.
In the diagram given below, the circle, square and triangle represent the atoms of different elements.
Identify all combinations that represent
- molecule of a compound
- molecule of an element consisting of two atoms
- molecule of an element consisting of three atoms
