Carbon and its Compounds Practice Questions
Class 10 · Science · 3060 free MCQs with instant results and detailed explanations.
3060
Total
949
Easy
1525
Medium
586
Hard
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Topics in Carbon and its Compounds
Chemical Properties of Carbon Compounds
849
Homologous Series
718
Nomenclature
692
Covalent Bonding
801
Sample Questions from Carbon and its Compounds
Here are 10 sample questions. Start a quiz to get randomized questions with scoring.
Q1
Easy
What type of bond is formed when two non-metals share electrons?
A.
Ionic bond
B.
Covalent bond
C.
Metallic bond
D.
Hydrogen bond
Show Answer & Explanation
Correct Answer: B
A covalent bond involves the sharing of electrons between non-metal atoms, unlike ionic bonds which involve transfer of electrons.
Q2
Easy
Which of the following compounds is formed by a covalent bond?
A.
NaCl
B.
H2O
C.
MgO
D.
CaF2
Show Answer & Explanation
Correct Answer: B
Water (H2O) is formed by covalent bonds between hydrogen and oxygen, while the others are ionic compounds.
Q3
Easy
What is the molecular formula of a compound formed by two hydrogen atoms and one oxygen atom?
A.
OH2
B.
H2O
C.
O2H
D.
H2O2
Show Answer & Explanation
Correct Answer: B
The molecular formula for water consists of two hydrogen atoms and one oxygen atom, represented as H2O.
Q4
Medium
Which of the following statements about covalent bonding is true?
A.
Covalent bonds involve the transfer of electrons.
B.
Covalent bonds occur between non-metals.
C.
Covalent bonds are formed by ionic interactions.
D.
Covalent bonds are stronger than all other types of bonds.
Show Answer & Explanation
Correct Answer: B
Covalent bonds are formed when two non-metals share electrons, distinguishing them from ionic bonds where electrons are transferred.
Q5
Medium
What is the shape of a molecule of methane (CH4)?
A.
Linear
B.
Trigonal planar
C.
Tetrahedral
D.
Octahedral
Show Answer & Explanation
Correct Answer: C
Methane has a tetrahedral shape due to the four pairs of bonding electrons around the central carbon atom, which repel each other.
Q6
Medium
If two atoms of chlorine (Cl) form a covalent bond, what type of bond is formed?
A.
Polar covalent bond
B.
Nonpolar covalent bond
C.
Ionic bond
D.
Metallic bond
Show Answer & Explanation
Correct Answer: B
When two identical nonmetals, like chlorine, bond together, they share electrons equally, resulting in a nonpolar covalent bond.
Q7
Medium
Which of the following represents a covalent compound?
A.
NaCl
B.
H2O
C.
MgO
D.
CaF2
Show Answer & Explanation
Correct Answer: B
H2O, water, is a covalent compound formed by the sharing of electrons between hydrogen and oxygen atoms.
Q8
Hard
Which of the following statements best describes a covalent bond?
A.
A bond formed by the transfer of electrons.
B.
A bond formed by the sharing of electron pairs between atoms.
C.
A bond that occurs only between metals.
D.
A bond that is always stronger than ionic bonds.
Show Answer & Explanation
Correct Answer: B
A covalent bond is specifically defined as a bond formed by the sharing of electron pairs between atoms, allowing them to achieve stability.
Q9
Hard
When two non-metal atoms bond covalently, what is the most likely outcome regarding their electronegativities?
A.
One atom will have a much higher electronegativity than the other.
B.
Both atoms will have similar electronegativities.
C.
One atom will lose its electronegativity.
D.
Electronegativity is irrelevant in covalent bonding.
Show Answer & Explanation
Correct Answer: B
Covalent bonding typically occurs between non-metals with similar electronegativities, allowing them to share electrons effectively.
Q10
Hard
Which of the following compounds contains a double covalent bond?
A.
Methane (CH4)
B.
Ethene (C2H4)
C.
Acetylene (C2H2)
D.
Butane (C4H10)
Show Answer & Explanation
Correct Answer: B
Ethene (C2H4) features a double bond between the two carbon atoms, which is characteristic of alkenes, unlike the other options which have single or triple bonds.
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Carbon and its Compounds — Class 10 Science Practice Questions Online
This page contains 3060 practice MCQs for the chapter Carbon and its Compounds in Class 10 Science. The questions are organized by difficulty — 949 easy, 1525 medium, 586 hard — so you can choose the right level for your preparation.
Every question includes a detailed explanation to help you understand the concept, not just memorize answers. Take a timed quiz to simulate exam conditions, or practice at your own pace with no time limit. This chapter covers 4 topics, giving you comprehensive coverage of the entire chapter.