Advertisements
Advertisements
Question
Statements given below are incorrect. Write the correct statements :
Aluminium is best conductor of electricity.
Advertisements
Solution
Silver is best conductor of electricity.
APPEARS IN
RELATED QUESTIONS
Give reasons for the following.
Copper cannot displace zinc from its salt solution.
The atomic number of an element Y is 16.
- What must an atom of Y do to achieve the nearest inert gas electron arrangement?
- Which inert gas is nearest to Y?
What is an amalgam?
Mention two uses of the following metals and non-metals
Oxygen
Mention two uses of the following metals and non-metals
Iodine
State two important uses of following metals:
Uses of iron
Why are alkali metals kept in kerosene oil?
Write scientific reason.
Anodes need to be replaced from time to time during the electrolysis of alumina.
What is it made from? Why?
Pots and pans
Name the following:
A metal used in flexible pipes.
On heating which of the following substances i.e. copper carbonate, zinc carbonate, washing soda, copper sulphate, zinc nitrate, copper nitrate, lead nitrate, ammonium chloride and ammonium dichromate – relate to the reaction given below.
An amorphous substance which turns from pale green to black on strong heating evolving a colourless, acidic gas as the only gaseous product.
Complete the following flowchart.
Which one of the following is an example for a metal?
Assertion: Mercury is solid in room temperature.
Reason: Mercury is a non-metal.
Which one of the following metals do not react with cold as well as hot water?
In the following figure, you find that the bulb glows when an iron nail is placed between two ends of wire. Complete the following sentences on the basis of this fact.
- ______ is a metal.
- Metals are good ______ 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 not solid at room temperature?
Which metals are liquid at room temperature?
The metals which are found in both free state as well as combined state are ______.
