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प्रश्न
With reference to the physical properties of metals and non-metals, state the following exception.
A non-metal which conducts electricity.
उत्तर
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संबंधित प्रश्न
If an element has a low ionization energy then it is likely to be ______________ (metallic / non metallic).
For the electro-refining of copper: Write the reaction that takes place at the anode
Which of the following are amphoteric oxides:
MgO, ZnO, P2O3, Al2O3, NO2
State one use of Carbon (as Graphite).
Define non-metals. Give five examples of non-metals.
State any three differences between the physical properties of metals and non-metals.
Name a metal used as a thermometric liquid
Fill in the blank
Tungsten metal is a poor conductor of _______
Statements given below are incorrect. Write the correct statements :
Chlorine gas is used in the manufacture of sulphuric acid.
Name the non-metal and its natural form, which is the hardest substance.
State two important uses of following non-metal
iodine
State the composition of given alloy:
Bronze
Name:
a metal which can be cut with a knife.
Select from the following ist:
`Fe_2O_3, , NO, PbO, Mn_2O_7`
Acidic oxide ………………
Complete the table.
| Property of metal | Use in everyday life |
| i. Ductility | |
| ii. Malleability | |
| iii. Conduction of heat | |
| iv. Conduction of electricity | |
| v. Sonority |
Complete the statement given below, by filling in the blank with the correct word:
A non-metal that leaves a mark on paper _______
Give reason for the following:
Rusting reduces the structural strength of iron.
Match the columns.
| Group A | Group B |
| 1. Making sheets of metals | a) Sonority |
| 2. Making metal utensils | b) Malleability |
| 3. Making Copper wires | c) Good conductor of heat |
| 4. Making bells from metal | d) Ductility |
The composition of aqua-regia is
