Advertisements
Advertisements
प्रश्न
With reference to the following metals state their use in daily life metal:
Silver
Advertisements
उत्तर
Silver:
- For making Jewellery.
- As is conducts more electricity and heat than any other metal which makes it a prime source of use in electronics.
APPEARS IN
संबंधित प्रश्न
Mark ‘T’ if the statement is true and ‘F’ if it is false.
Copper displaces zinc from zinc sulphate solution. ( )
Give a reason for Alkali metals are good reducing agents.
State one use of the following metal:
Mercury
Give the composition of an alloy called solder. State its one property and one use.
What is an amalgam?
Give reasons
Magnesium is used in fire works.
Give reasons
Gold is mixed with copper and nickel.
State two important uses of following metal
Uses of mercury
State the position of the following in the periodic table:
Iron and zinc
Give the general characteristics of:
Alkaline earth metals with reference to
(i) bonding
(ii) action of air
(iii) action of water
(iv) action of acid
Take an element from an alkali metal and one from an alkaline earth metal and write an equation for their action with:
Water.
Write scientific reason.
Sodium is always kept in kerosene.
Write scientific reason.
Pine oil is used in froth flotation.
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
What is it made from? Why?
Ornaments
Compare the properties of metals and nonmetals. Give three examples for each.
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.
Which of the following is not a metal?
The metal can be cut with a knife ______.
X [2, 8, 7] and Y [2, 8, 2] are two elements. Using this information, complete the following:
Metal atoms tend to have a maximum of ______ electrons in the outermost shell.
