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प्रश्न
A non-metal A is an important constituent of our food and forms two oxides B and C. Oxide B is toxic whereas C causes global warming
- Identify A, B and C
- To which Group of Periodic Table does A belong?
उत्तर
- A is carbon, B is carbon monoxide and C is carbon dioxide.
- Carbon belongs to group number 14 in the modern periodic table.
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संबंधित प्रश्न
Name two metals which are both malleable and ductile.
Name the metals present in the following alloys
Stainless steel
Match the statements in Column A, with those in Column B .
| Column A | Column B | ||
| 1 | A metal used for making high quality mirrors . | a | Chlorine |
| 2 | A metal which neither malleable nor ductile. | b | Graphite |
| 3 | A non-metal,used in the sterilsation of water. | c | Iodine |
| 4 | A non-metal, whose deficiency can lead to disease like goitre. | d | Silver |
| 5 | A non -metal which can be used as dry lubricant. | e | Zinc |
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.
Sodium amalgam is prepared by dissolving sodium in :
Name:
two metals which are soft
Name the following:
or
With reference to the physical properties of metals and non-metals, state the following exception.
A metal which is liquid at room temperature.
Which metal occurs as a carbonate also gives the name of their respective ore.
The composition of aqua-regia is
