Here are some multiple-choice questions (MCQs) for CBSE Chapter 4 Class 10 Science Carbon and its Compounds. According to the updated CBSE Syllabus, these MCQs are designed to help students become familiar with the question types and their difficulty levels. With the recent changes in the exam pattern, MCQs have become an important part of the Class 10 Science Board exam. To assist students in understanding these question types, we have compiled MCQs specifically for Chapter 4 to make fundamentals strong. Additionally, answers to these MCQs are also available for students to reference. These MCQs are available in this post, enabling students to access them at any time during their studies. Students can also use the CBSE Class 10 Sample Papers books for more practice.
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CBSE Class 10 Chapter 4 Carbon and its Compounds MCQs
Q.1. Vast amount of energy needed to run factories is obtained from
(a) nuclear reactors
(b) hydroelectric dams
(c) coal and petroleum products
(d) tidal waves.
Answer
Practice More – CBSE Practice Papers Class 10 (2024) – Free PDF Download
Q.2. Which of the following organic compounds does not have the same chemical properties as methanol?
(a) C2H6O
(b) C5H10O
(c) C4H10O
(d) C7H16O
Answer
Q.3. The given diagram shows the arrangement of valence electrons in organic compound Q, having molecular formula X2YZ2.
What could be the compound Q?
(a) Methanol (b) Ethanol
(c) Methanoic acid (d) Ethanoic acid
Answer
(c): From the given diagram,
Valence electrons in X = 1
Valence electrons in Z = 2
Valence electrons in Y = 4
Thus, X is hydrogen (H).
Y is carbon (C).
Z is oxygen (O) i.e., methanoic acid.
Thus, Q is HCOOH, i.e., methanoic acid.
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Q.4. An organic compound X with molecular formula C2H4O2 turns blue litmus red and gives brisk effervescence with sodium bicarbonate.
Identify the compound.
(a) Methanoic acid
(b) Ethanoic acid
(c) Ethanol
(d) Methanol
Answer
CH3COOH + NaHCO3 → CH3COONa + H2O + CO2
Q.5. Which of the following compounds can undergo an addition reaction with chlorine?
Answer
Q.6. The properties of two gases, P and Q, are given here.
(1) P dissolves in aqueous sodium hydroxide but Q does not.
(2) Q does not decolourise aqueous bromine.
(3) When Q burns in excess oxygen, the products are P and water only.
What are P and Q likely to be?
| p | Q | |
| (a) | Carbon dioxide | Ethane |
| (b) | Carbon dioxide | Ethane |
| (c) | Carbon monoxide | Ethane |
| (d) | Ethane | Ethane |
Answer
Q.7. The structural formula of 2-methyl-2-butene is
(a) CH3 – CH(CH3) – CH == CH2
(b) CH3 – CH2 – C(CH3) == CH2
(c) CH3CH == CH – CH3
(d) CH3CH == C(CH3)– CH3
Answer
Q.8. Structures of two different forms of carbon are given below:
Identify the two forms and how are they related to each other?
(a) Diamond, Graphite, Isotopes
(b) Graphite, Diamond, Allotropes
(c) C12, C14, Allotropes
(d) C14, C12, Isotopes
Answer
CBSE Class 10 Resources – Important Formula Book For 10th Science
Q.9. When the number of carbon atoms per molecule in alkanes increases,_________.
(a) the viscosity increases
(b) the flammability increases
(c) the density decreases
(d) the boiling point decreases
Answer
Q.10. An element P has electronic configuration (2, 4) and element Q has electronic configuration (2, 6). The formula of a compound formed by P and Q is
(a) Q—P—Q
(b) Q P Q
(c) Q P Q
(d) none of these
Answer
We hope the MCQs for CBSE Class 10 Science Chapter 4 on Carbon and its Compounds are helpful for your board exam preparation.
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