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प्रश्न
Name a non-metal that a good conductor of heat and electricity
उत्तर
Graphite (Carbon)
APPEARS IN
संबंधित प्रश्न
Name one metal and one non-metal which exist in liquid state at room temperature.
Name a non-metal having a very high melting point.
Define non-metals. Give five examples of non-metals.
"Is malleable and ductile". This best describes:
(a) a metal
(b) a compound
(c) a non-metal
(d) a solution
Write ‘True’ or ‘False’ in front of following statement.
Stainless steel is used for making power transmission wires.
Write ‘True’ or ‘False’ in front of following statement.
Graphite is used in making filaments of electric bulb.
Tick (√) the most appropriate answer.
A metal which is a poor conductor of electricity is:
Name a non-metal which is good conductor of electricity.
Name a gaseous non-metal,. having greenish yellow colour.
Name:
a metal whose oxide is reduced only by carbon
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?
Why is hydrogen kept in the metal activity series?
With reference to the physical properties of metals and non-metals, state the following exception.
A non-metal which has low tensile strength
With reference to the physical properties of metals and non-metals, state the following exception.
A metal which floats on water.
Give reason for the following:
Metals form cations while non-metals form anions.
______ is the only non-metal which conducts electricity.
Which of the following non-metal is lustrous?
The atomic number of an element ‘X’ is 12. Which inert gas is nearest to X?
Generally, non-metals are not lustrous. Which of the following non-metal is lustrous?
Non-metals are usually good conductors of heat and electricity.
