Advertisements
Advertisements
प्रश्न
State a specific reason for using copper in electrical cables
Advertisements
उत्तर
Copper is used in electrical cables because it is a good conductor of electricity.
APPEARS IN
संबंधित प्रश्न
Mark ‘T’ if the statement is true and ‘F’ if it is false.
Sodium is a very reactive metal. ( )
Name one ore of manganese. Which compound of manganese is present in this ore? Also write its chemical formula.
What is an alloy?
What elements are present in steel?
Fill in the blank
A metal that gives dazzling effect to crackers when they explode is ______
Aluminium is not used to make :
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 :
Zinc is used for making power transmission wires.
State two important uses of following metal:
Uses of silver
State two important uses of following metal
Uses of mercury
State the position of the following in the periodic table:
Aluminium
Give the general characteristics of:
Alkali metals,
(i) bonding
(ii) action of air
(iii) action of water
(iv) action of acid
Write name.
Molecular formula of the common ore of aluminium.
Which is the non-ionic compound in the compounds given below.
AgNO3 + Nacl → AgCl + NaNO3
What is it made from? Why?
Electric cables
With reference to the following metals state their use in daily life metal:
Lead
A is a reddish-brown metal, which combines with O2 at < 1370 K gives B, a black coloured compound. At a temperature > 1370 K, A gives C which is red in colour. Find A, B, and C with reaction.
Name two major non-metals which are present in fertilisers and enhance the growth of plants.
The liquid metal at room temperature ______.
Which metals are liquid at room temperature?
