Home
Class 8
BIOLOGY
Paheli bought a statue made of copper. T...

Paheli bought a statue made of copper. To her surprise it acquired a dull green coating after a couple of months. Explain the reason.

Text Solution

AI Generated Solution

**Step-by-Step Solution:** 1. **Understanding the Material**: Paheli bought a statue made of copper. Copper is a metal known for its reddish-brown color and is often used in various applications, including decorative items like statues. 2. **Reactivity of Copper**: Copper has low reactivity compared to other metals. However, it can still react with substances in its environment, particularly oxygen and moisture present in the air. 3. **Formation of Copper Oxide**: When the copper statue is exposed to air, it reacts with oxygen to form copper oxide (CuO). This process is known as oxidation. ...
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • MATERIALS : METALS AND NON - METALS

    NCERT EXEMPLAR|Exercise LONG ANSWER QUESTIONS|1 Videos

  • MATERIALS : METALS AND NON - METALS

    NCERT EXEMPLAR|Exercise VERY SHORT ANSWER QUESTIONS|9 Videos

  • CROP PRODUCTION AND MANAGEMENT

    NCERT EXEMPLAR|Exercise LONG ANSWER QUESTIONS|5 Videos

  • MICROORGANISMS : FRIEND AND FOE

    NCERT EXEMPLAR|Exercise LONG ANSWER QUESTIONS|2 Videos

Similar Questions

Explore conceptually related problems

When a copper vessel is exposed to moist air for a long time, it acquires a dull green coating on its surface. The material of this green coating is a mixture of

It was Paheli’s birthday. Her grandmother gave her two gifts made of metals, one old dull silver spoon and a pair of lustrous gold earrings. She was surprised to see the difference in the appearance of the two metals. Can you explain the reason for this difference?

Knowledge Check

  • When a copper vessel is exposed to moist air for a long time, it acquires a dull green coating on its surface. The material of this green coating is a mixture of:

    A
    Copper oxide and copper sulphate
    B
    Copper carbonate and copper hydroxide
    C
    Copper oxide and copper carbonate
    D
    Copper hydroxide and copper sulphate

  • When a copper plate is exposed to moist air for long, then it acquires a dull green coating. The green material is

    A
    copper sulphate
    B
    a mixture of copper hydroxide and copper sulphate
    C
    a mixture of copper carbonate and copper sulphate
    D
    a mixture of copper carbonate and copper hydroxide

  • When a copper plate is exposed to moist air for long ,then it acquires a dull green coating .The green material is

    A
    copper sulphate
    B
    a mixture of copper hydroxide and copper sulphate
    C
    a mixture of copper carbonate and copper sulphate
    D
    a mixture of copper carbonate and copper hydroxide

    • Similar Questions

    Explore conceptually related problems

    When a copper vessel is exposed to moist air for long, it acquires a dull green coating. The reaction can be represented as 2Cu+underset("moist air")ubrace(W+X+Y) to Cu(OH)_(2)+Z W,X,Y and Z respectively

    Deepa and her family on their house-warming ceremony received many bouquets which they kept at the corner of the drawing room. After some time, they felt the fragrance of the flowers all over the drawing room. What could be the reason behind this? Explain with a suitable reason.

    Deepa and her family on their house warming ceremony received many bouquets which they kept at the corner of drawing room. After some time, they felt the fragrance of the flowers all over the drawing room. What could be the reason behind this ? Explain with suitalble reasson.

    Paheli had heard that rainwater is as good as distilled water. So she collected some rainwater in a clean flass tumbler and tested it using a tester.To her surprise she found that the compass needle showed deflection. What could be the reasons?

    When a copper plate is exposed to most air for long, it acquires a green coating. The green material is

    Home
    Profile