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प्रश्न
Fill in the blank
Chalk powder dissolved in water is an example of a Chalk powder dissolved in water is an example of a _________.
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उत्तर
Chalk powder dissolved in water is an example of a Chalk powder dissolved in water is an example of a suspension.
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संबंधित प्रश्न
Differentiate between the following.
Filter Paper and Alum
Give one example for the following types of mixtures :
misicible liquids
Define:
Atomicity
Give one use of the following substance:
Iron
Find the atomicity of the Following molecule:
Carbon Monoxide
Fill in the blank
The most abundant element in the atmosphere is _______.
Indicate whether the following statement is true or false:
A compound is made up of just one kind of atom
Indicate whether the following statement is true or false:
Elements are made up of compounds
Indicate whether the following statement is true or false:
Molecules can exist independently.
Indicate whether the following statement is true or false:
Noble gases are high reactive
Tick (√) the correct alternative from the choice given for the following statement.
Brass and bronze are
Tick (√) the correct alternative from the choice given for the following statement.
Sand is a compound of
Tick (√) the correct alternative from the choice given for the following statement
A metal which is brittle
Tick (√) the correct alternative from the choice given for the following statement
The most ductile metal.
Match the statements in List I – 1 to 10 correct answers in List II-A to J.
| List I | LIst II | ||
| 1 | Fluorine and chlorine | A | Nitrogen |
| 2 | A diatomic molecule | B | Boron |
| 3 | A molecule containing the elements hydrogen and oxygen. | C | Reactants |
| 4 | A metalloid - showing properties of both metals and non-metals. | D | Chemical Formula |
| 5 | The term used for the substances which take part in the chemical reaction | E | Halogens |
| 6 | The term represents a substance by means of symbols. | F | Water |
| 7 | The term used for the substances formed as a result of a chemical reaction | G | Nitric Acid |
| 8 | A compound containing one atom of zinc and two atoms of chlorine. | H | Products |
| 9 | The chemical name for nitrogen monoxide. | I | Phosphorus |
| 10 | A polyatomic molecule. | J | Zinc Chloride |
Atoms: Fundamental particle of an element::______ : Fundamental particles of a compound.
Oxygen is very essential for us to live. It forms 21% of air by volume. Is it an element or compound?
Matter is its simplest form is called ______.
Reason out
Elements are called semimetals.
Elements contain the ______of the same kind.
