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प्रश्न
Name a non-metal that is liquid at room temperature
उत्तर
Bromine
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संबंधित प्रश्न
Some properties are listed in the following Table. Distinguish between metals and non-metals on the basis of these properties
| Properties | Metals | Non-metals |
| 1. Appearance | Lustrous | Dull |
| 2. Hardness | Hard | Soft |
| 3. Malleability | Can be beaten into thin sheets | Cannot be beaten into thin sheets |
| 4. Ductility | Can be drawn into wires | Cannot be drawn into wires |
| 5. Heat Conduction | Good conductors of heat | Poor conductors of heat |
| 6. Conduction of Electricity | Good conductors of electricity | Poor conductors of electricity |
Can you store lemon pickle in an aluminium utensil? Explain.
Name one metal and one non-metal which exist in liquid state at room temperature.
Write the name and formulae of a non-metal hydride.
State three reasons (of which at least one must be chemical) for believing that sodium is a metal.
Which of the following metal exists in the liquid state?
(a) Na
(b) Ag
(c) Cr
(d) Hg
Name the metals present in the following alloys
Stainless steel
Statements given below are incorrect. Write the correct statements :
Soda water is prepared by dissolving washing soda in water.
Write ‘True’ or ‘False’ in front of following statement.
Graphite is used in making filaments of electric bulb.
Write ‘True’ or ‘False’ in front of following statements.
Non-metals are poor conductors of electricity.
State two important uses of following non-metal
Uses of chlorine
What is an alloy?
Name:
a metal which can float on water
Name:
a non metal which can form a positive ion
Identify the odd term.
Three experiments to study the process of rusting are given below. Observe the three test tubes and answer the following questions.
- Why the nail in the test tube 2 is not rusted?
- Why is the nail in the test tube 1 is rusted highly?
- Would the nail in the test tube 3 get rusted?
Which metal occurs as a carbonate also gives the name of their respective ore.
Which metal occurs as an oxide also gives the name of their respective ore.
Pencil lead contains
The metal is stored in kerosene ______.
