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
- Name the type of lenses required by the persons for the correction of their defect of vision called presbyopia. Write the structure of the lenses commonly used for the correction of this defect giving reason for such designs.
How is the brain protected in our body?
- CBSE Class X - 2025
- Brain Structure
- Describe the historical factors that contributed to the emergence of nationalist tensions in the Balkans.
- CBSE Class X - 2025
- The Rise of Nationalism in Europe
आप नव्या / भव्य हैं। विद्यालय में नामांकन के समय आपकी जन्मतिथि गलत दर्ज हो गई है। दसवीं के पंजीकरण से पहले आप इसे सुधरवाना चाहते हैं। जन्मतिथि में सुधार हेतु निवेदन करते हुए प्रधानाचार्य को लगभग 80 शब्दों में एक ई-मेल लिखिए।
- CBSE Class X - 2025
- पत्र लेखन
आप अदिति / आदित्य हैं। आपकी दादीजी को खेलों में अत्यधिक रुचि है। ओलंपिक खेल-2024 में भारत के प्रदर्शन के बारे में जानकारी देते हुए लगभग 100 शब्दों में पत्र लिखिए।
- CBSE Class X - 2025
- पत्र लेखन
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