Advertisements
Advertisements
Question
Write ‘True’ or ‘False’ in front of following statement.
Brass is an alloy of copper and zinc and has lustrous yellow colour.
Options
True
False
Advertisements
Solution
True.
APPEARS IN
RELATED QUESTIONS
Mark ‘T’ if the statement is true and ‘F’ if it is false.
Sodium is a very reactive metal. ( )
Give a reason for Alkali metals are good reducing agents.
Fill in the following blanks with suitable words:
A metal having low melting point is ..................... but a non-metal having very high melting point is ..............
State one use of Copper.
State one use of Aluminium.
Fill in the following blank with suitable word:
The electrical conductivity and melting point of an alloy is ........... than that of pure metals.
What is an alloy? Give two examples of alloys.
State two important uses of following metal:
Uses of silver
State the position of the following in the periodic table:
Iron and zinc
Write scientific reason.
Sodium is always kept in kerosene.
With reference to the following metal state its use in daily life:
Magnesium
Give a reason why a green deposit is seen on the surface of an article of copper
Name the following:
A metal used in packaging.
Name the following:
The chemical compound responsible for the green deposit on the surface of articles of copper.
Aluminium: _______: gold : : electric insulator
Match the columns.
| Group A | Group B |
| 1) Copper and Zinc | a) Brass |
| 2) Copper and Tin | b) Bronze |
| c) Stainless steel |
Why are bells made of metals?
A doctor prescribed a tablet to a patient suffering from iron deficiency. The tablet does not look like iron. Explain.
Match the following
| i. | Softest metal | a. | Copper |
| ii. | Hardest metal | b. | Sodium |
| iii. | Hardest non–metal | c. | Osmium |
| iv. | Ductility | d. | Diamond |
