(A) (i) Draw the structure of the following compounds :
(a) Butanoic acid
(b) Chloropentane
(ii) How are structure (i) and structure (ii) given below related to one another ? Give reason to justify your answer. Draw one more possible structure for above case.
(iii) Differentiate between saturated and unsaturated carbon compounds on the basis of their general formula.
OR
(B) (i) What happens when a small piece of sodium is dropped in ethanol ? Write the equation for this reaction.
(ii) Why is glacial acetic acid called so ?
(iii) What happens when ethanol is heated at in the presence of conc. ? Write the role of conc. in this case.
(iv) Write an equation showing saponification.
(A) (i) Draw the structure of the following compounds :
(a) Butanoic acid
(b) Chloropentane
(ii) How are structure (i) and structure (ii) given below related to one another ? Give reason to justify your answer. Draw one more possible structure for above case.
(iii) Differentiate between saturated and unsaturated carbon compounds on the basis of their general formula.
OR
(B) (i) What happens when a small piece of sodium is dropped in ethanol ? Write the equation for this reaction.
(ii) Why is glacial acetic acid called so ?
(iii) What happens when ethanol is heated at in the presence of conc. ? Write the role of conc. in this case.
(iv) Write an equation showing saponification.
(A) (i) (a) Butanoic acid: CH3CH2CH2COOH
(b) Chloropentane: CH3CH2CH2CH2Cl
(ii) Structure (i) and structure (ii) are related to each other as they are isomers of each other. Isomers are compounds that have the same molecular formula but differ in the arrangement of their atoms.
(iii) Saturated carbon compounds have a general formula of CnH2n+2, while unsaturated carbon compounds have a general formula of CnH2n or CnH2n-2. Saturated compounds have only single bonds between carbon atoms, while unsaturated compounds have one or more multiple bonds between carbon atoms.
Marking Scheme
- 1(i) (a) Butanoic acid: CH3CH2CH2COOH
- 2(b) Chloropentane: CH3CH2CH2CH2Cl
- 3(ii) Structure (i) and structure (ii) are related to each other as they are isomers of each other.
- 4(iii) Saturated carbon compounds have a general formula of CnH2n+2, while unsaturated carbon compounds have a general formula of CnH2n or CnH2n-2.
Hint
To solve this question, focus on understanding the structure of compounds and how to draw them. Also, make sure to know the general formula for saturated and unsaturated carbon compounds.
Quick Oral Answer
The structure of compounds is important in understanding their properties and behavior. Isomers are compounds that have the same molecular formula but differ in the arrangement of their atoms. Saturated and unsaturated carbon compounds have different general formulas and properties.
Analysis & Explanation
This question requires the student to understand the structure of compounds and how to draw them. It also requires the student to know the general formula for saturated and unsaturated carbon compounds. The student needs to analyze the structures and identify the relationship between them. Additionally, the student needs to differentiate between saturated and unsaturated carbon compounds based on their general formula.
Common Mistakes
- 1Not understanding the structure of compounds
- 2Not knowing the general formula for saturated and unsaturated carbon compounds
- 3Not being able to differentiate between saturated and unsaturated carbon compounds
Interesting Facts
The structure of compounds is important in understanding their properties and behavior.
Isomers are compounds that have the same molecular formula but differ in the arrangement of their atoms.
Saturated and unsaturated carbon compounds have different general formulas and properties.
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Frequently Asked Questions
How many marks does this question carry in CBSE Class 10 Science 2023?
This question carries 5 marks in the CBSE Class 10 Science 2023 examination.
Which chapter does this question come from in Science?
This question is from the chapter "Carbon and its Compounds" in the CBSE Class 10 Science syllabus.
What topic does this question cover in Science?
This question covers the topic "Structure of Compounds" from CBSE Class 10 Science.
What type of question is this in the CBSE Class 10 Science 2023 paper?
This is a Long Answer question from Section D in the CBSE Class 10 Science 2023 paper.