What is hydrogenation? What is its industrial application?
What is hydrogenation? What is its industrial application?
Solution and Explanation
Hydrogenation is the process of the addition of hydrogen. Unsaturated hydrocarbons are added with hydrogen in the presence of palladium and nickel catalysts to give saturated hydrocarbons.
This reaction is applied in the hydrogenation of vegetable oils, which contain long chains of unsaturated carbons.
Top Questions on Chemical Properties Of Carbon Compounds
- Carbon compounds :
(i) are good conductors of electricity.
(ii) are bad conductors of electricity.
(iii) have strong forces of attraction between their molecules.
(iv) have weak forces of attraction between their molecules.
The correct statements are :- CBSE Class X - 2024
- Science
- Chemical Properties Of Carbon Compounds
- Consider the following statements about homologous series of carbon compounds:
(a) All succeeding members differ by –CH2 unit.
(b) Melting point and boiling point increases with increasing molecular mass.
(c) The difference in molecular masses between two successive members is 16 u.
(d) C2H2 and C3H4 are NOT the successive members of alkyne series.
The correct statements are –- CBSE Class X - 2024
- Science
- Chemical Properties Of Carbon Compounds
- (a) (i)Give reason why carbon can neither form C4+ cations nor C4− anions but form covalent compounds.
(ii) What is homologous series of carbon compound? Write the molecular formula of any two consecutive members of homologous series of aldehydes.
(iii) Draw the structure of the molecule of cyclohexane (C6H12).
OR
(b) (i) Name a commercially important carbon compound having functional group –OH and write its molecular formula. (ii) Write chemical equation to show its reaction with
(1) Sodium metal
(2) Excess conc. sulphuric acid
(3) Ethanoic acid in the presence of an acid catalyst
(4) Acidified potassium dichromate
Also write the name of the product formed in each case.- CBSE Class X - 2024
- Science
- Chemical Properties Of Carbon Compounds
- More than three million carbon compounds have been discovered in the field of chemistry. The diversity of these compounds is due to the capacity of carbon atoms for bonding with one another as well as with other atoms. Most of the carbon compounds are poor conductors of electricity and have low melting and boiling points.
- CBSE Class X - 2024
- Science
- Chemical Properties Of Carbon Compounds
Butanone is a four-carbon compound with the functional group
- CBSE Class X
- Science
- Chemical Properties Of Carbon Compounds
Questions Asked in CBSE X exam
Select TRUE statements about lymph from the following:
A. Lymph vessels carry lymph through the body and finally open into larger arteries.
B. Lymph contains some amount of plasma, proteins and blood cells.
C. Lymph contains some amount of plasma, proteins and red blood cells.
D. Lymph vessels carry lymph through the body and finally open into larger veins.
The true statements are:- CBSE Class X - 2025
- Circulatory System
- Two statements are given below. They are Assertion (A) and Reason (R). Read both the statements and choose the correct option:
Assertion (A): The French speaking community was rich in comparison to the Dutch speaking community in Belgium.
Reason (R): Dutch speaking community got the benefit of economic development and education much later.- CBSE Class X - 2025
- Power Sharing
- According to a popular quote – “Kindness is stronger than iron bars.”
Anil did not hand the thief over to the police. In what way did Anil’s act of wisdom and forgiveness transform Hari Singh?
(The Thief’s Story)- CBSE Class X - 2025
- Indian English Literature/Prose
- 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
- State two limitations of electrical impulses in multicellular organisms. Why is chemical communication better than electrical impulses as a means of communication between cells in multicellular organisms?
- CBSE Class X - 2025
- Organic Chemistry – Some Basic Principles and Techniques
Concepts Used:
Allotropes of Carbon
The existence of a chemical element in one or more physical forms happening in the same physical state is called Allotropes or allotropy. Allotropes may show different physical or chemical states turning on the atom arrangement or the number of existent atoms. While carbon and sulfur is the common element presenting allotropy. Carbon can make further allotropes due to its five-membered valency.
Read More: Allotropes of Carbon
Allotropes of Carbon:
Carbon is part of a p-block element.
- The atomic number of carbon = 6
- It belongs to group 14.
- It makes up about 18.5% of the human body by mass.
Carbon has only two types of allotropes, such as;
- Crystalline
- Amorphous
The crystalline form of carbon consists of allotropes like;
- Diamond
- Graphite
- Fullerenes
The amorphous form of carbon consists of allotropes like;
- Coal
- Coke
- Wood charcoal
- Animal charcoal
- Lampblack
- Gas carbon