Free PDF Download of CBSE Class 10 Science Chapter 4 Carbon and Its Compounds Assertion Reason Questions Class 10 Science. Assertion and Reason Questions for Class 10 Science with Answers were Prepared Based on the Latest Exam Pattern. Students can solve NCERT Class 10 Science Carbon and Its Compounds to know their preparation level.
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Carbon and Its Compounds Class 10 Assertion Reason Questions
The following questions consist of two statements – Assertion (A) and Reason (R). Answer these questions by selecting the appropriate option given below:
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false but R is true.
Q1. Assertion(A): Diamond is the hardest natural known substance.
Reason (R): Diamond is used for cutting marble, granite, and glass.
(b) Both A and R are true but R is not the correct explanation of A.
Q2. Assertion(A) : Coal and petroleum have been formed from biomass which has been subjected to various biological and geological processes.
Reason(R) : Coal is the remains of trees, ferns, and other plants that lived millions of yearsago.
(b) Both A and R are true but R is not the correct explanation of A.
Q.3. Assertion(A): Diamond and graphite do not have the same crystal structure.
Reason (R) : Diamond is crystalline while graphite is amorphous.
(c) A is true but R is false.
Q.4. Assertion (A) : Alkanes give addition reaction.
Reason (R) : Addition reactions are a characteristic property of unsaturated hydrocarbons.
(d) Assertion is false but reason is true
Q.5. Assertion(A): Cooking oil decolourises brominewater.
Reason(R): Cooking oil is a saturated compound.
(b) Both A and R are true but R is not the correct explanation of A.
Q.6. Assertion(A): n-butane and iso-butane are examples of isomers.
Reason (R) : Isomerism is possible only with hydrocarbons having 4 or more carbon atoms.
(b) Both A and R are true but R is not the correct explanation of A.
Q.7. Assertion(A) : If the first member of a homologous series is methanal, its third member will be propanal.
Reason (R) : All the members of a homologous series show similar chemical properties.
(b) Both A and R are true but R is not the correct explanation of A.
Q.8. Assertion(A) : Carbon is the only element that can form large number of compounds.
Reason (R) : Carbon is tetravalent and shows the property of catenation.
(d) Assertion is false but reason is true
Q.9.Assertion(A) : The structure of C-60 is arranged in the shape of a football.
Reason(R) : The structure of C-60 is designed by the US architect Buckminster Fuller.
(b) Both A and R are true but R is not the correct explanation of A.
Q.10. Assertion(A): Ethanol is first member of the alcohol homologous series.
Reason (R) : A homologous series can be represented by a general formula.
(d) Assertion is false but reason is true
Q.11. Assertion(A): Carbon and its compounds can be used as fuels.
Reason (R) : They are highly inflammable and have high calorific value.
(a) Both assertion and reason are true and reason is the correct explanation of assertion.
Q.12. Assertion(A): Covalent compounds are generally poor conductor of electricity.
Reason (R) : They consist of molecules and not ions which can transfer charge.
(a) Both assertion and reason are true and reason is the correct explanation of assertion.
Q.13.Assertion(A): n-butane and iso-butane are examples of isomers.
Reason(R) : Isomerism is possible only with hydrocarbons having 4 or more carbon atoms.
(b) Both A and R are true but R is not the correct explanation of A.
Q.14.Assertion(A) : C3H8 and C4H10 are successive members of homologues series of methane
Reason(R) : Any two successive members in a homologous series
(c) A is true but R is false.
Q.15. Assertion(A): Carbon possesses property of catenation.
Reason (R) : Carbon atoms form double as well as triple bonds during catenation.
(b) Both A and R are true but R is not the correct explanation of A.
Assertion (A): Ethanol is used as a solvent in many medicines.
Reason (R): Ethanol can dissolve both polar and non-polar substances.
Answer: (a) Both A and R are true and R is the correct explanation of A.
Assertion (A): Carbon forms a large number of compounds due to its tetravalency.
Reason (R): The tetravalency of carbon allows it to form stable covalent bonds with other elements, including carbon itself.
Answer: (a) Both A and R are true and R is the correct explanation of A.
Assertion (A): Carbon monoxide (CO) is a poisonous gas.
Reason (R): Carbon monoxide binds with hemoglobin, reducing its oxygen-carrying capacity.
Answer: (a) Both A and R are true and R is the correct explanation of A.
Assertion (A): Carbon compounds are generally combustible.
Reason (R): Combustion of carbon compounds involves the reaction with oxygen to release energy.
Answer: (a) Both A and R are true and R is the correct explanation of A.
Assertion (A): Carbon forms stable covalent bonds with other elements.
Reason (R): Carbon has a strong tendency to complete its octet by sharing electrons with other atoms.
Answer: (a) Both A and R are true and R is the correct explanation of A.
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