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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.
APPEARS IN
संबंधित प्रश्न
Name a soft metal.
Fill in the blan
An ________ is a homogeneous mixture of two or more metals.
Name the substance you will add to speed up sedimentation.
Give Two Examples for Each of the Following: Inert Gases
Write the Chemical Name of the Following and Also Give Their Molecular Formulae:
Vinegar
Name: a Metal Which is brittle
Name: a Non-metal Which is a Good Conductor of Electricity.
Give two examples of the following.
Non-metals which are solids
Answer the following question:
What do you understand by the statement: ‘metals are ductile and malleable’?
Fill in the blank
A metal which is a liquid at room temperature is _______.
Indicate whether the following statement is true or false:
All elements are artificially prepared
Tick (√) the correct alternative from the choice given for the following statement.
Gold is used to make jewellery because
Define the terms elements, compounds & mixtures with a view to show their basic difference.
Select the correct answer from A, B, C, D & E for the statement given below :
A metalloid.
The diagram represents fractional distillation for the separation of mixtures. Answer the following :
- Can two immiscible liquids be separated by this process?
- Separation of liquids by this process is based on which physical property?
- If methyl alcohol & water are to be separated, which liquid would remain in flask ‘X’ after condensation.
- Give a reason for the above answer.
- State the purpose of the fractionating column in the apparatus.
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
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?
______ is the life-giving element is the air.
Name the element which is used for making computer chips.
Name the element which is used in toothpaste to strengthen our teeth.
