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प्रश्न
Give an example of a metal which is a poor conductor of heat.
उत्तर
- Mercury
- Lead
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संबंधित प्रश्न
Fill in the blanks:
Phosphorus is a very _________ non-metal.
Choose the most appropriate answer of the following:
This is not an alloy of copper:
(A) Brass
(B) Bronze
(C) Solder
(D) Duralumin.
Give the name and formulae of two acidic oxides.
Name the non-metal which is used to convert vegetable oil into vegetable ghee (solid fat).
Name two metals which are both malleable and ductile.
How do non-metals react with oxygen? Explain with an example. Give equation of the reaction involved. What is the nature of the product formed? How will you demonstrate it?
State any three differences between the physical properties of metals and non-metals.
The electronic configurations of four particles A, B, C and D given below:
| A | 2, 8, 8 |
| B | 2, 8, 2 |
| C | 2, 6 |
| D | 2, 8 |
Which electronic configuration represents:
(i) magnesium atom?
(ii) oxygen atom?
(iii) sodium ion
(iv) chloride ion?
Name a metal used in making electric cables
Name a non-metal which is good conductor of electricity.
Name:
a metal which can float on water
Explain how the activity series accounts for each of the following:
reaction with acids
Identify the odd term.
What are the metals that make the alloys brass and bronze?
Which metal occurs as an oxide also gives the name of their respective ore.
State whether the statement given below is true or false. If false write the correct statement.
Lead pencils contain lead.
_______ is good conductor of heat but bad conductor of electricity.
Brass : Aluminium and zinc : : Bronze : ______
Which non-metal is essential for our life and all living beings inhale it during breathing?
Reason out
Mercury is the only metal that is liquid at room temperature.
