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प्रश्न
Name the following:
A metal used in packaging.
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उत्तर
Aluminium
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संबंधित प्रश्न
State one use of the following metal:
Copper
Brass is an alloy of copper and ______.
Name one ore of manganese. Which compound of manganese is present in this ore? Also write its chemical formula.
How does the electrical conductivity of copper alloys, brass and bronze, differ from that of pure copper?
Give reasons
Gold is mixed with copper and nickel.
Fill in the blank
A metal that gives dazzling effect to crackers when they explode is ______
Why is hydrogen placed with alkali metals?
Take an element from an alkali metal and one from an alkaline earth metal and write an equation for their action with:
Oxygen
Write name.
The oxide that forms salt and water by reacting with both acid and base.
Write name.
The device used for grinding an ore.
Name the following:
The chemical compound responsible for the green deposit on the surface of articles of copper.
Match the columns.
| Group A | Group B |
| 1) Copper and Zinc | a) Brass |
| 2) Copper and Tin | b) Bronze |
| c) Stainless steel |
Complete the following flowchart.
Compare the properties of metals and nonmetals. Give three examples for each.
Can you store pickle in an aluminium utensil? Give reason.
Name two major non-metals which are present in fertilisers and enhance the growth of plants.
Metals are ______ conductors of heat and electricity.
Match the following
| i. | Softest metal | a. | Copper |
| ii. | Hardest metal | b. | Sodium |
| iii. | Hardest non–metal | c. | Osmium |
| iv. | Ductility | d. | Diamond |
X [2, 8, 7] and Y [2, 8, 2] are two elements. Using this information, complete the following:
______ is the metallic element.
X [2, 8, 7] and Y [2, 8, 2] are two elements. Using this information, complete the following:
______ is the reducing agent.
