Advertisements
Advertisements
Question
With reference to the following metals state their use in daily life metal:
copper
Solution
Copper:
- Making calori meters as it is good conductor of heat.
- Making thin wires being conductor of electricity.
APPEARS IN
RELATED QUESTIONS
State one use of Mercury.
Fill in the following blank with suitable word:
The alloy in which one of the metals is mercury is called an ...............
How are the properties of an alloy different from those of the constitutent elements?
Write ‘true’ or ‘false’ for the following statement.
Iodine acts as an antiseptic in the form of a tincture of iodine.
State the position of the following in the periodic table:
Iron and zinc
Write name.
Alloy of sodium with mercury.
Write name.
Molecular formula of the common ore of aluminium.
Write scientific reason.
Sodium is always kept in kerosene.
The electronic configuration of metal ‘A’ is 2,8,1 and that of metal ‘B’ is 2,8,2. Which of the two metals is more reactive? Write their reaction with dilute hydrochloric acid.
Match the alloys given in column I to the uses given in column II :
| Column I | Column II |
| (i) Duralumin | A. Electrical fuse |
| (ii) Solder | B. Surgical instruments |
| (iii) Brass | C. Aircraft body |
| (iv) Stainless Steel | D. Decorative articles |
State the position of the following in the periodic table:
Halogens
What is it made from? Why?
Ornaments
Name the following:
A metal used in packaging.
Complete the following flow chart.
The ability of metals to be drawn into thin wire is known as
Which one of the following four metals would be displaced from the solution of its salts by other three metals?
______ is the first scientist who used the term element.
Match the following
| i. | Silica | a. | Caustic potash |
| ii. | Potassium hydroxide | b. | Sand |
| iii. | Sodium hydroxide | c. | Calamine |
| iv. | Zinc carbonate | d. | Caustic soda |
