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प्रश्न
Complete the statement with the correct words.
_______ are chemicals which are hydroxide (or oxides) of ______ eg. sodium hydroxide.
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उत्तर
Bases – are chemicals which are hydroxide (or oxides) of metals eg. sodium hydroxide.
संबंधित प्रश्न
Name: an Inert Gas
Define: Formula
Find the atomicity of the Following molecule:
Carbon Monoxide
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 |
State four differences between – elements, compounds and mixtures with suitable examples.
‘An atom is the basic unit of an element’. Draw a diagram of an atom – divisible as seen today.
Select the correct answer from A, B, C, D & E for the statement given below :
A diatomic molecule.
Give an example for the elements derived from their Latin names.
Water contains _____ and _____ element.
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?
