Advertisements
Advertisements
Questions
State two important uses of the following metal.
Uses of magnesium
Write the uses of magnalium metal.
Advertisements
Solution
- It burns with a dazzling white flame and hence is used in fireworks.
- It is used in the making of alloys, such as magnalium. This alloy is used in making the frame of aeroplanes.
RELATED QUESTIONS
What happens when Dilute sulphuric acid is poured on a copper plate?
Write word equations of the reactions involved.
Give a reason for the following:
Alkali metals are good reducing agents.
State one use of the following metal:
Gold
The electrical conductivity and melting point of an alloy is ______ than that of pure metals.
What is an alloy?
How are the properties of an alloy different from those of the constituent elements?
Which of the following alloys contains mercury as one of the constituents?
Give reasons
Graphite is used in the leads of pencils
A metal with melting point less than 50°C is
Fill in the blank spaces by choosing the correct words from the given list.
List: amalgam, chlorine, gallium, sodium chloride, silver chloride
______ is a liquid metal.
Fill in the blank spaces by choosing the correct words from the given list.
List: amalgam, chlorine, gallium, sodium chloride, silver chloride
A solution of a metal in mercury is called ________
Statements given below are incorrect. Write the correct statements :
Bronze is a mixture of 10% copper, 80% zinc and 10% tin.
Statements given below are incorrect. Write the correct statements :
Zinc is used for making power transmission wires.
Name a metal which is best conductor of electricity :
State two important uses of following metal
Uses of lead
Why is hydrogen placed with alkali metals?
Molecular formula of the chloride of an element X is XCl. This compound is a solid having high melting point. Write name of any element present in the same group as X
Name the following:
The chemical compound responsible for the green deposit on the surface of articles of copper.
Name the following:
A halogen which is a solid at room temperature.
Electronic configuration of metal A is 2,8,1. Electronic configuration of metal B is 2,8,8,2. Which of the above metals is more reactive? Explain with reason.
Can you store pickle in an aluminium utensil? Give reason.
Which of the following property is generally not shown by metals?
Which one of the following metals do not react with cold as well as hot water?
Give an example of a metal which
- is liquid at room temperature.
- is the best conductor of heat.
The metal can be cut with a knife ______.
Silver and copper are very good conductors of electricity.
Match the following
| i. | Silica | a. | Caustic potash |
| ii. | Potassium hydroxide | b. | Sand |
| iii. | Sodium hydroxide | c. | Calamine |
| iv. | Zinc carbonate | d. | Caustic soda |
Which metals are liquid at room temperature?
Compare the conductivity of metals and non–metals.
