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प्रश्न
Name a non-metal that is hardest naturally occurring substance
उत्तर
Diamond (Carbon)
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संबंधित प्रश्न
Write any three differences between metals and non-metals with respect to their physical properties.
Name one non-metal which is stored under water.
What is meant by "brittleness"? Which type of elements usually show brittleness: metals or non-metals?
What are metals? Name five metals.
Name a non-metal which conducts electricity.
Name the metals present in the following alloys
Brass
Name a metal which can be cut with a knife :
State two important uses of following non-metal
iodine
Name the three classes in which elements are classified. Which was the first metal used by man?
Name the non-metal present in abundance in the earth's crust.
Name:
a non-metal with high m.p & b.p
Name:
a metal which lacks ductility
Name:
a metal which is brittle
How are metals like sodium, potassium, and calcium obtained? Give equations.
Complete the statement given below, by filling in the blank with the correct word:
A metal which floats on water _____
Oxygen, hydrogen, and sulphur are examples for
Name six common non-metals and write their symbols.
Match the following:
| 1. | Non-metals | a. | Silicon |
| 2. | Metals | b. | fire extinguisher |
| 3. | Metalloids | c. | dull and soft |
| 4. | Oxygen | d. | hard and shiny |
| 5. | Water | e. | supports fire |
The metal is stored in kerosene ______.
Reason out
Mercury is the only metal that is liquid at room temperature.
