Advertisements
Advertisements
Question
Give a reason why a green deposit is seen on the surface of an article of copper
Advertisements
Solution
The green deposit of the surface of the articles made of copper is seen due to the formation of green copper carbonate.
APPEARS IN
RELATED QUESTIONS
Fill in the following blanks with suitable words:
A metal having low melting point is ..................... but a non-metal having very high melting point is ..............
Fill in the following blank with suitable word:
Brass is an alloy of copper and .........
Mention two uses of the following metals and non-metals
Aluminium
Give reasons
Gold is mixed with copper and nickel.
Fill in the blank
A metal that gives dazzling effect to crackers when they explode is ______
State two important uses of following metal:
Uses of gold
State the position of the following in the periodic table:
Alkali metals
State the position of the following in the periodic table:
Alkaline earth metals
The electronic configuration of metal ‘A’ is 2,8,1 and that of metal ‘B’ is 2,8,2. Which of the two metals is more reactive? Write their reaction with dilute hydrochloric acid.
What is it made from? Why?
Ornaments
With reference to the following metals state their use in daily life metal:
Aluminium
With reference to the following metal state its use in daily life:
Magnesium
With reference to the following metals state their use in daily life metal:
Zinc
State why telegraph poles are painted with aluminium paint.
Name the following:
The most reactive halogen.
Name the following:
The chemical compound responsible for the green deposit on the surface of articles of copper.
Complete the following flow chart.

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 one metal and one non-metal that exist in liquid state at room temperature. Also name two metals having melting point less than 310 K (37°C)
Why are bells made of metals?
