A shiny brown coloured element ‘X’ on heating in air becomes black in colour. Name the element ‘X’ and the black coloured compound formed.
Solution and Explanation
‘X’ is copper (Cu) and the black-coloured compound formed is copper oxide (CuO). The equation of the reaction involved on heating copper is given below.
Top Questions on Effects Of Oxidation Reactions In Everyday Life
- Explain the following in terms of gain or loss of oxygen with two examples each.
(a) Oxidation
(b) Reduction- CBSE Class X
- Science
- Effects Of Oxidation Reactions In Everyday Life
- Explain the following terms with one example each.
(a) Corrosion
(b) Rancidity- CBSE Class X
- Science
- Effects Of Oxidation Reactions In Everyday Life
- Why do we apply paint on iron articles?
- CBSE Class X
- Science
- Effects Of Oxidation Reactions In Everyday Life
- Oil and fat containing food items are flushed with nitrogen. Why?
- CBSE Class X
- Science
- Effects Of Oxidation Reactions In Everyday Life
- Write one equation each for decomposition reactions where energy is supplied in the form of heat, light or electricity.
- CBSE Class X
- Science
- Effects Of Oxidation Reactions In Everyday Life
Questions Asked in CBSE X exam
There is a circular park of diameter 65 m as shown in the following figure, where AB is a diameter. An entry gate is to be constructed at a point P on the boundary of the park such that distance of P from A is 35 m more than the distance of P from B. Find distance of point P from A and B respectively.
- CBSE Class X - 2025
- Coordinate Geometry
- Write one function each of the parts - (i) petals (ii) anther (iii) style and (iv) ovary of a bisexual flower.
- CBSE Class X - 2025
- How Do Organisms Reproduce
- In a right triangle ABC, right-angled at A, if $\sin B = \dfrac{1}{4}$, then the value of $\sec B$ is
- CBSE Class X - 2025
- Trigonometry
- The system of equations $2x + 1 = 0$ and $3y - 5 = 0$ has
- CBSE Class X - 2025
- Linear Equations
- A peacock sitting on the top of a tree of height 10 m observes a snake moving on the ground. If the snake is $10\sqrt{3}$ m away from the base of the tree, then angle of depression of the snake from the eye of the peacock is
- CBSE Class X - 2025
- Trigonometry
Concepts Used:
Oxidation and Reduction
What is Oxidation?
Oxidation is a chemical process which can be explained by following four point of views
In terms of oxygen transfer
In terms of electron transfer
In terms of hydrogen transfer
In terms of oxidation number
Oxidation in Terms of Oxygen Transfer – Oxidation is gain of oxygen.
What is Reduction?
Reduction is a chemical process which can be explained by following four point of views
In terms of oxygen transfer
In terms of electron transfer
In terms of hydrogen transfer
In terms of oxidation number
Reduction in Terms of Oxygen Transfer – Reduction is loss of oxygen.
What is Redox Reaction?
A chemical reaction which involves transfer of electrons or change in oxidation number of atoms is called redox reaction.