Select the correct answer from the choice in the bracket.
The formula of caustic soda.
[3] Elements, Compounds and Mixtures (Experimental Techniques)
Chapter: [3] Elements, Compounds and Mixtures (Experimental Techniques)
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Name the following:
An acid whose formula is ‘H2CO3’.
[3] Elements, Compounds and Mixtures (Experimental Techniques)
Chapter: [3] Elements, Compounds and Mixtures (Experimental Techniques)
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Name the process by which the components of following mixtures can be separated.
- Iron and sulphur
- Ammonium chloride and sand
- Common salt from sea water
- Chaff and grain
- Water and mustard oil
- Sugar and water
[3] Elements, Compounds and Mixtures (Experimental Techniques)
Chapter: [3] Elements, Compounds and Mixtures (Experimental Techniques)
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Fill in the blank
In a _______ the substances are not combined chemically.
[3] Elements, Compounds and Mixtures (Experimental Techniques)
Chapter: [3] Elements, Compounds and Mixtures (Experimental Techniques)
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Select the correct alternative from the choices given for the following statement:
A set of mixture is
[3] Elements, Compounds and Mixtures (Experimental Techniques)
Chapter: [3] Elements, Compounds and Mixtures (Experimental Techniques)
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Write true or false
A heterogeneous mixture has a uniform composition throughout the mixture.
[3] Elements, Compounds and Mixtures (Experimental Techniques)
Chapter: [3] Elements, Compounds and Mixtures (Experimental Techniques)
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Write true or false
The constituents of a mixture can only be separated by chemical means.
[3] Elements, Compounds and Mixtures (Experimental Techniques)
Chapter: [3] Elements, Compounds and Mixtures (Experimental Techniques)
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Write true or false
Handpicking can be used as a separation technique if the particle size of the constituents of the mixture is the same.
[3] Elements, Compounds and Mixtures (Experimental Techniques)
Chapter: [3] Elements, Compounds and Mixtures (Experimental Techniques)
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What is the difference between a pure substance and a mixture ?
[3] Elements, Compounds and Mixtures (Experimental Techniques)
Chapter: [3] Elements, Compounds and Mixtures (Experimental Techniques)
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What are the different types of mixtures ?
[3] Elements, Compounds and Mixtures (Experimental Techniques)
Chapter: [3] Elements, Compounds and Mixtures (Experimental Techniques)
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The methods of separating components of a given mixture are based on the
[3] Elements, Compounds and Mixtures (Experimental Techniques)
Chapter: [3] Elements, Compounds and Mixtures (Experimental Techniques)
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Explain the term mixture.
[3] Elements, Compounds and Mixtures (Experimental Techniques)
Chapter: [3] Elements, Compounds and Mixtures (Experimental Techniques)
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What are the characteristic properties of a pure substance? Why do we need them?
[3] Elements, Compounds and Mixtures (Experimental Techniques)
Chapter: [3] Elements, Compounds and Mixtures (Experimental Techniques)
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Define :- Miscible liquids
[3] Elements, Compounds and Mixtures (Experimental Techniques)
Chapter: [3] Elements, Compounds and Mixtures (Experimental Techniques)
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Define :- Immiscible liquids
[3] Elements, Compounds and Mixtures (Experimental Techniques)
Chapter: [3] Elements, Compounds and Mixtures (Experimental Techniques)
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Select the correct alternative from the choices given for the following statement:
Example of a homogeneous mixture is
[3] Elements, Compounds and Mixtures (Experimental Techniques)
Chapter: [3] Elements, Compounds and Mixtures (Experimental Techniques)
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Fill in the blank
Mixtures can be ________ or _______
[3] Elements, Compounds and Mixtures (Experimental Techniques)
Chapter: [3] Elements, Compounds and Mixtures (Experimental Techniques)
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[4] Atomic Structure
Chapter: [4] Atomic Structure
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Give the group number of following elements present in periodic table
[4] Atomic Structure
Chapter: [4] Atomic Structure
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State the term
The tabular arrangement of elements in horizontal rows and vertical columns _________
[4] Atomic Structure
Chapter: [4] Atomic Structure
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