Are you looking for the 10th Class Chemistry Chapter 4 (12) Short Questions Notes if yes? then you visit the right place where you can easily find the chapter 12 most important short questions only without answers but it is your responsibility to find answers from your 10th class Chemistry book.
Students You know that these Chapter 4 (12) Hydrocarbons Short Questions of Chemistry are helpful so don’t ignore to find answers from your Chemistry of Class 10.
Class 10 Chemistry Chapter 12 Notes
Class 10 Chemistry Chapter 12 Important Short Questions Notes
- Hydrocarbons are organic compounds of carbon and hydrogen elements. They are alkanes, alkenes, and alkynes.
- Open-chain hydrocarbons are classified as saturated and unsaturated.
- Saturated hydrocarbons consist of each carbon atom having its tetravalency fully satisfied by single bonds. They are called alkanes and have a general formula of CnH2n+2.
- Unsaturated hydrocarbons consist of double and triple bonds. Compounds consisting of double bonds are called alkenes. They have a general formula CnH2n. While compounds consisting of triple bonds are called alkynes. They have the general formula CnH2n-2.
- Alkanes are named with respect to a number of carbon atoms ending with the suffix ‘ane’.
- Alkanes are prepared by the hydrogenation of alkenes or alkynes and the reduction of alkyl halides.
- The important reactions of alkanes are combustion and halogenation. Combustion of alkanes produces a lot of energy which is the reason alkanes are used as fuel.
- Alkenes are prepared by dehydration of alcohols and dehydrohalogenation of alkyl halides.
- Alkenes give important reactions like halogenation and oxidation. Oxidation of alkene produces an important compound, glycol.
- Alkynes are prepared by the dehydrohalogenation of vicinal dihalides and dehalogenation of tetrahalides.
- An important reaction of acetylene is oxidation which produces oxalic acid.
- Differentiate between saturated and unsaturated hydrocarbons.
- A compound consisting of four carbon atoms has a triple bond in it. How many hydrogen atoms are present in it?
- Why are the alkanes called ‘paraffins’?
- What do you know about the hydrogenation of alkenes?
- How are alkyl halides reduced?
- Why are the alkanes used as fuel?
- How can you prepare ethene from alcohol and ethyl bromide?
- Identify propane from propene with a chemical test.
- Why are the alkenes called ‘olefins’?
- Why alkane can’t be oxidized with KMnO4 solution?
- What are the addition reactions? Explain with an example.
- Justify that alkanes give substitution reactions.
- Both alkenes and alkynes are unsaturated hydrocarbons. State the one most significant difference between them.
- Write the molecular, dot cross, and structural formula of ethyne.
- Why are hydrocarbons soluble in organic solvents?
- Give the physical properties of alkanes.
- How can you identify ethane from ethene?
- Why color of bromine water discharge with the addition of ethene it?
- State one important use of each: (i) Ethene (ii) Acetylene (iii) Chloroform (iv) Carbon tetrachloride
The topic of this post is 10th Class Chemistry Chapter 4 (12) Notes Important Short Questions and we add this post to the 10th Chemistry Notes category where students can easily find the Short Questions type study solutions and much more that students need to be related to the Class 10 Chemistry Book.