Q. In the measurement 0.03040, how many significant figures are present?
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Solution
In 0.03040, the leading zeros do not count, but the trailing zero after the decimal does. Therefore, there are 4 significant figures.
Correct Answer:
B
— 4
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Q. In the measurement 123.45, how many significant figures are present?
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Solution
All digits in 123.45 are significant, giving a total of 5 significant figures.
Correct Answer:
C
— 5
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Q. In the measurement 150.0, how many significant figures are present?
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Solution
The significant figures are 1, 5, and the trailing zero after the decimal point.
Correct Answer:
C
— 4
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Q. In the measurement 2500 kg, how many significant figures are there?
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Solution
The number 2500 kg has two significant figures unless specified otherwise (e.g., with a decimal point).
Correct Answer:
A
— 2
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Q. In the mixed graph, if the x-axis represents time and the y-axis represents sales, what does a plateau in the graph indicate?
A.
Sales are increasing rapidly.
B.
Sales have stabilized after a period of growth.
C.
Sales are declining.
D.
Sales are highly variable.
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Solution
A plateau indicates that sales have reached a stable point after previous growth.
Correct Answer:
B
— Sales have stabilized after a period of growth.
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Q. In the molecular orbital diagram of diatomic nitrogen (N2), which orbitals are filled first?
A.
σ2s, σ*2s
B.
σ2p, π2p
C.
π2p, σ2p
D.
σ*2p, π*2p
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Solution
In N2, the 2s orbitals (σ2s and σ*2s) are filled before the 2p orbitals.
Correct Answer:
A
— σ2s, σ*2s
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Q. In the molecular orbital theory, which of the following is true for the π molecular orbitals?
A.
They are formed by end-to-end overlap.
B.
They are lower in energy than σ orbitals.
C.
They can accommodate a maximum of 2 electrons.
D.
They are always bonding.
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Solution
π molecular orbitals can accommodate a maximum of 2 electrons, similar to all molecular orbitals.
Correct Answer:
C
— They can accommodate a maximum of 2 electrons.
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Q. In the molecular orbital theory, which of the following orbitals is lower in energy than the 2p orbitals?
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Solution
The 2s molecular orbitals are lower in energy than the 2p molecular orbitals.
Correct Answer:
A
— 2s
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Q. In the molecular orbital theory, which of the following orbitals is lower in energy for homonuclear diatomic molecules?
A.
σ2p
B.
π2p
C.
σ2s
D.
π2s
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Solution
The σ2s orbital is lower in energy than the π2p and σ2p orbitals in homonuclear diatomic molecules.
Correct Answer:
C
— σ2s
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Q. In the molecular orbital theory, which of the following orbitals is the highest energy in O2?
A.
σ2p
B.
π2p
C.
σ*2p
D.
π*2p
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Solution
The highest energy orbital in O2 is σ*2p, which is an antibonding orbital.
Correct Answer:
C
— σ*2p
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Q. In the molecular orbital theory, which of the following orbitals is the highest occupied molecular orbital (HOMO) in O2?
A.
σ2p
B.
π2p
C.
σ*2p
D.
π*2p
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Solution
In O2, the highest occupied molecular orbital (HOMO) is π2p.
Correct Answer:
B
— π2p
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Q. In the molecular orbital theory, which of the following pairs of orbitals can combine to form a sigma bond?
A.
s and p
B.
p and p
C.
s and s
D.
d and p
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Solution
s and s orbitals can combine to form a sigma bond.
Correct Answer:
C
— s and s
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Q. In the molecular orbital theory, which orbitals combine to form sigma bonds?
A.
s and p orbitals
B.
p and d orbitals
C.
s orbitals only
D.
p orbitals only
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Solution
Sigma bonds are formed by the head-on overlap of s and p orbitals.
Correct Answer:
A
— s and p orbitals
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Q. In the number 0.0004560, how many significant figures are present?
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Solution
The leading zeros are not significant, but the trailing zero is significant. Therefore, it has 4 significant figures.
Correct Answer:
B
— 4
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Q. In the number 0.007890, how many significant figures are there?
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Solution
The significant figures are 7, 8, 9, and the leading zeros are not counted.
Correct Answer:
C
— 5
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Q. In the number 2500, how many significant figures are there?
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Solution
Without a decimal point, 2500 has 2 significant figures.
Correct Answer:
A
— 2
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Q. In the number 4500, how many significant figures are there?
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Solution
4500 has 2 significant figures unless specified with a decimal point.
Correct Answer:
A
— 2
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Q. In the number 5000, how many significant figures are there?
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Solution
5000 has 1 significant figure unless specified with a decimal point (e.g., 5000.).
Correct Answer:
A
— 1
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Q. In the passage, how does the author feel about the role of art in society?
A.
It is unnecessary
B.
It is essential
C.
It is overrated
D.
It is subjective
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Solution
The author argues that art plays an essential role in society, contributing to cultural and emotional development.
Correct Answer:
B
— It is essential
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Q. In the passage, how does the author feel about the role of literature in society? (2023)
A.
Marginal
B.
Central
C.
Unnecessary
D.
Controversial
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Solution
The author views literature as central to understanding human experiences and societal issues.
Correct Answer:
B
— Central
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Q. In the passage, how does the author illustrate the concept of selections through examples?
A.
By providing statistical data on choices
B.
By narrating personal anecdotes
C.
By referencing historical events
D.
By discussing various literary works
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Solution
The author illustrates the concept of selections by discussing various literary works, demonstrating how selections influence interpretation.
Correct Answer:
D
— By discussing various literary works
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Q. In the passage, how does the author suggest marketers should respond to changing consumer preferences?
A.
By sticking to traditional marketing methods.
B.
By ignoring social media trends.
C.
By continuously adapting their strategies.
D.
By focusing solely on data analytics.
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Solution
The author advocates for marketers to be flexible and adapt their strategies in response to evolving consumer preferences.
Correct Answer:
C
— By continuously adapting their strategies.
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Q. In the passage, how does the author suggest one should approach making selections?
A.
By relying solely on intuition.
B.
By considering both personal and contextual factors.
C.
By following established norms without question.
D.
By avoiding any emotional involvement.
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Solution
The author suggests that one should approach making selections by considering both personal and contextual factors, promoting a thoughtful decision-making process.
Correct Answer:
B
— By considering both personal and contextual factors.
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Q. In the passage, how does the author view the relationship between technology and privacy?
A.
Technology enhances privacy protections.
B.
Technology poses significant threats to personal privacy.
C.
Technology has no impact on privacy issues.
D.
Technology is irrelevant to the discussion of privacy.
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Solution
The author discusses various ways in which technology can compromise personal privacy, highlighting the risks involved.
Correct Answer:
B
— Technology poses significant threats to personal privacy.
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Q. In the passage, how does the author view the role of technology in making selections?
A.
Technology complicates the selection process.
B.
Technology simplifies and enhances the selection process.
C.
Technology has no effect on selections.
D.
Technology is detrimental to thoughtful selections.
Show solution
Solution
The author views technology as a tool that simplifies and enhances the selection process, making it easier for individuals to make informed choices.
Correct Answer:
B
— Technology simplifies and enhances the selection process.
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Q. In the passage, the author describes 'dichotomy' as:
A.
a single entity
B.
a division into two contrasting parts
C.
a harmonious blend
D.
an irrelevant detail
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Solution
'Dichotomy' refers to a division or contrast between two things that are represented as being opposed or entirely different.
Correct Answer:
B
— a division into two contrasting parts
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Q. In the passage, the author describes 'resilience' as essential for: (2023)
A.
failure
B.
success
C.
indifference
D.
stagnation
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Solution
'Resilience' refers to the ability to recover from difficulties, which is crucial for achieving success as discussed in the passage.
Correct Answer:
B
— success
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Q. In the passage, the author describes the situation as 'tenuous'. This suggests that it is: (2023)
A.
stable
B.
fragile
C.
secure
D.
robust
Show solution
Solution
'Tenuous' indicates something that is weak or fragile, which aligns with the author's description of the situation in the passage.
Correct Answer:
B
— fragile
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Q. In the passage, the author describes the situation as 'tenuous'. This suggests that the situation is:
A.
stable
B.
fragile
C.
secure
D.
predictable
Show solution
Solution
'Tenuous' indicates something that is weak or fragile, suggesting instability.
Correct Answer:
B
— fragile
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Q. In the passage, the author primarily conveys a sense of urgency regarding climate change. Which of the following phrases best captures this tone?
A.
We must act swiftly to mitigate the effects.
B.
Climate change is a gradual process.
C.
There are various opinions on climate change.
D.
The situation is under control.
Show solution
Solution
The phrase 'We must act swiftly to mitigate the effects' reflects urgency, aligning with the author's tone about climate change.
Correct Answer:
A
— We must act swiftly to mitigate the effects.
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Major Competitive Exams MCQ & Objective Questions
Major Competitive Exams play a crucial role in shaping the academic and professional futures of students in India. These exams not only assess knowledge but also test problem-solving skills and time management. Practicing MCQs and objective questions is essential for scoring better, as they help in familiarizing students with the exam format and identifying important questions that frequently appear in tests.
What You Will Practise Here
Key concepts and theories related to major subjects
Important formulas and their applications
Definitions of critical terms and terminologies
Diagrams and illustrations to enhance understanding
Practice questions that mirror actual exam patterns
Strategies for solving objective questions efficiently
Time management techniques for competitive exams
Exam Relevance
The topics covered under Major Competitive Exams are integral to various examinations such as CBSE, State Boards, NEET, and JEE. Students can expect to encounter a mix of conceptual and application-based questions that require a solid understanding of the subjects. Common question patterns include multiple-choice questions that test both knowledge and analytical skills, making it essential to be well-prepared with practice MCQs.
Common Mistakes Students Make
Rushing through questions without reading them carefully
Overlooking the negative marking scheme in MCQs
Confusing similar concepts or terms
Neglecting to review previous years’ question papers
Failing to manage time effectively during the exam
FAQs
Question: How can I improve my performance in Major Competitive Exams?Answer: Regular practice of MCQs and understanding key concepts will significantly enhance your performance.
Question: What types of questions should I focus on for these exams?Answer: Concentrate on important Major Competitive Exams questions that frequently appear in past papers and mock tests.
Question: Are there specific strategies for tackling objective questions?Answer: Yes, practicing under timed conditions and reviewing mistakes can help develop effective strategies.
Start your journey towards success by solving practice MCQs today! Test your understanding and build confidence for your upcoming exams. Remember, consistent practice is the key to mastering Major Competitive Exams!
