Advertisements
Advertisements
प्रश्न
Statements given below are incorrect. Write the correct statements :
Aluminium is best conductor of electricity.
Advertisements
उत्तर
Silver is best conductor of electricity.
APPEARS IN
संबंधित प्रश्न
Fill in the blanks:
Metals react with acids to produce _________ gas.
Mark ‘T’ if the statement is true and ‘F’ if it is false.
Generally, non-metals react with acids. ( )
Mark ‘T’ if the statement is true and ‘F’ if it is false.
Sodium is a very reactive metal. ( )
Which property of graphite is utilised in making electrodes?
Name an alloy of lead and tin.
Which property of 'solder' alloy makes it suitable for welding electrical wires?
Mention two uses of the following metals and non-metals
Gold
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
Salt of silver, such as ________ is used for making photographic films.
State the position of the following in the periodic table:
Alkaline earth metals
Take an element from an alkali metal and one from an alkaline earth metal and write an equation for their action with:
Sulphuric acid
Write name.
The device used for grinding an ore.
With reference to the following metals state their use in daily life metal:
Zinc
Name the following:
The chemical compound responsible for the green deposit on the surface of articles of copper.
Soft metal : Na : : hard metal : _______
Write the name.
Two highly reactive metals-
Complete the following flow chart.
Give reasons for the following.
- Aluminum foils are used to wrap food items.
- Immersion rods for heating liquids are made up of metallic substances.
- Sodium and potassium are stored in kerosene.
- Mercury is used in thermometers.
Which of the following is not a metal?
