Q. What is the central theme of the passage regarding environmental conservation? (2023)
A.
Environmental conservation is a luxury that can be ignored.
B.
Environmental conservation is essential for future generations.
C.
Environmental issues are exaggerated by activists.
D.
Conservation efforts are only necessary in developing countries.
Show solution
Solution
The passage emphasizes the critical importance of environmental conservation to ensure a sustainable planet for future generations.
Correct Answer:
B
— Environmental conservation is essential for future generations.
Learn More →
Q. What is the central theme of the passage regarding globalization? (2021)
A.
Globalization benefits only developed countries.
B.
Globalization leads to cultural homogenization.
C.
Globalization has no impact on local economies.
D.
Globalization fosters international cooperation.
Show solution
Solution
The passage discusses how globalization can lead to cultural homogenization, affecting local traditions and identities.
Correct Answer:
B
— Globalization leads to cultural homogenization.
Learn More →
Q. What is the central theme of the passage regarding mental health awareness?
A.
Mental health issues are over-exaggerated.
B.
Mental health awareness is crucial for societal well-being.
C.
Mental health is not a real concern.
D.
Mental health awareness only affects young people.
Show solution
Solution
The passage stresses the importance of mental health awareness in promoting overall societal health and reducing stigma.
Correct Answer:
B
— Mental health awareness is crucial for societal well-being.
Learn More →
Q. What is the central theme of the passage regarding the benefits of meditation?
A.
Meditation is a waste of time.
B.
Meditation improves mental health and well-being.
C.
Meditation is only beneficial for spiritual growth.
D.
Meditation has no scientific backing.
Show solution
Solution
The passage discusses various benefits of meditation, particularly its positive effects on mental health and overall well-being.
Correct Answer:
B
— Meditation improves mental health and well-being.
Learn More →
Q. What is the central theme of the passage regarding the importance of biodiversity? (2020)
A.
Biodiversity is essential for ecosystem stability.
B.
Biodiversity is only important for aesthetic reasons.
C.
Biodiversity has no impact on human health.
D.
Biodiversity is a concern only for developing countries.
Show solution
Solution
The passage discusses how biodiversity contributes to ecosystem resilience and human well-being.
Correct Answer:
A
— Biodiversity is essential for ecosystem stability.
Learn More →
Q. What is the central theme of the passage regarding the importance of mental health awareness? (2020)
A.
Mental health issues are often exaggerated.
B.
Awareness can lead to better treatment and support.
C.
Mental health is less important than physical health.
D.
Only professionals can address mental health concerns.
Show solution
Solution
The passage emphasizes that increasing awareness about mental health can lead to better understanding, treatment, and support for those affected.
Correct Answer:
B
— Awareness can lead to better treatment and support.
Learn More →
Q. What is the central theme of the passage regarding the role of education in society?
A.
Education is solely for acquiring job skills.
B.
Education fosters critical thinking and civic responsibility.
C.
Education should be privatized for better quality.
D.
Education is less important in the digital age.
Show solution
Solution
The passage emphasizes that education plays a crucial role in developing critical thinking and fostering responsible citizenship.
Correct Answer:
B
— Education fosters critical thinking and civic responsibility.
Learn More →
Q. What is the central theme of the passage regarding urbanization?
A.
Urbanization leads to economic decline.
B.
Urbanization has no impact on rural areas.
C.
Urbanization presents both challenges and opportunities.
D.
Urbanization is a recent phenomenon.
Show solution
Solution
The passage discusses how urbanization brings about various challenges, such as overcrowding, while also offering opportunities for economic growth.
Correct Answer:
C
— Urbanization presents both challenges and opportunities.
Learn More →
Q. What is the central theme of the text regarding the role of technology in education? (2021)
A.
Technology has made education more accessible and engaging.
B.
Technology is detrimental to traditional teaching methods.
C.
Technology should be avoided in educational settings.
D.
Technology only benefits students in urban areas.
Show solution
Solution
The text emphasizes the positive impact of technology in enhancing educational experiences and accessibility for students.
Correct Answer:
A
— Technology has made education more accessible and engaging.
Learn More →
Q. What is the change in enthalpy for an endothermic reaction?
A.
Negative
B.
Positive
C.
Zero
D.
Undefined
Show solution
Solution
In an endothermic reaction, heat is absorbed from the surroundings, resulting in a positive change in enthalpy.
Correct Answer:
B
— Positive
Learn More →
Q. What is the change in enthalpy for an exothermic reaction?
A.
Positive
B.
Negative
C.
Zero
D.
Undefined
Show solution
Solution
In an exothermic reaction, heat is released, resulting in a negative change in enthalpy.
Correct Answer:
B
— Negative
Learn More →
Q. What is the change in enthalpy for an isothermal process?
A.
Zero
B.
Positive
C.
Negative
D.
Depends on the system
Show solution
Solution
In an isothermal process, the temperature remains constant, and for an ideal gas, the change in enthalpy is zero.
Correct Answer:
A
— Zero
Learn More →
Q. What is the change in entropy when 1 kg of water at 100°C is converted to steam at 100°C? (Latent heat of vaporization = 2260 kJ/kg) (2021)
A.
2260 J/K
B.
2260 kJ/K
C.
0 J/K
D.
1130 J/K
Show solution
Solution
ΔS = Q/T = 2260 kJ / 373 K = 6.06 kJ/K.
Correct Answer:
A
— 2260 J/K
Learn More →
Q. What is the change in entropy when 1 mole of an ideal gas expands isothermally and reversibly from volume V1 to V2?
A.
R ln(V2/V1)
B.
R (V2 - V1)
C.
R (V1/V2)
D.
0
Show solution
Solution
The change in entropy for an isothermal and reversible expansion of an ideal gas is given by ΔS = nR ln(V2/V1). For 1 mole, n = 1, hence ΔS = R ln(V2/V1).
Correct Answer:
A
— R ln(V2/V1)
Learn More →
Q. What is the change in entropy when 1 mole of an ideal gas expands isothermally from volume V1 to V2?
A.
R ln(V2/V1)
B.
R (V2 - V1)
C.
R (V1/V2)
D.
0
Show solution
Solution
The change in entropy for an isothermal expansion of an ideal gas is given by ΔS = nR ln(V2/V1). For 1 mole, it simplifies to ΔS = R ln(V2/V1).
Correct Answer:
A
— R ln(V2/V1)
Learn More →
Q. What is the change in internal energy (ΔU) for an ideal gas during an isothermal process? (2021)
A.
ΔU = 0
B.
ΔU = nRT
C.
ΔU = -nRT
D.
ΔU = PV
Show solution
Solution
In an isothermal process for an ideal gas, the temperature remains constant, which means the internal energy does not change. Therefore, ΔU = 0.
Correct Answer:
A
— ΔU = 0
Learn More →
Q. What is the change in internal energy (ΔU) for an ideal gas in an isochoric process?
A.
ΔU = Q
B.
ΔU = W
C.
ΔU = 0
D.
ΔU = Q - W
Show solution
Solution
In an isochoric process, the change in internal energy is equal to the heat added to the system, ΔU = Q.
Correct Answer:
A
— ΔU = Q
Learn More →
Q. What is the change in internal energy (ΔU) for an ideal gas that expands isothermally? (2022)
A.
0
B.
nRT
C.
nRΔT
D.
PV
Show solution
Solution
For an isothermal process, the change in internal energy ΔU = 0 for an ideal gas.
Correct Answer:
A
— 0
Learn More →
Q. What is the change in internal energy (ΔU) for an ideal gas undergoing an isothermal process? (2021)
A.
ΔU = 0
B.
ΔU = Q
C.
ΔU = W
D.
ΔU = Q + W
Show solution
Solution
In an isothermal process for an ideal gas, the temperature remains constant, which means the internal energy does not change. Therefore, ΔU = 0.
Correct Answer:
A
— ΔU = 0
Learn More →
Q. What is the change in internal energy (ΔU) for an isothermal process for an ideal gas? (2021)
A.
ΔU = 0
B.
ΔU = nRT
C.
ΔU = -nRT
D.
ΔU = PV
Show solution
Solution
In an isothermal process for an ideal gas, the temperature remains constant, which means the internal energy does not change. Therefore, ΔU = 0.
Correct Answer:
A
— ΔU = 0
Learn More →
Q. What is the change in internal energy (ΔU) for an isothermal process of an ideal gas? (2021)
A.
ΔU = 0
B.
ΔU = nRT
C.
ΔU = -nRT
D.
ΔU = PV
Show solution
Solution
In an isothermal process for an ideal gas, the temperature remains constant, which means the internal energy does not change. Therefore, ΔU = 0.
Correct Answer:
A
— ΔU = 0
Learn More →
Q. What is the change in internal energy for an ideal gas during an isochoric process?
A.
Zero
B.
nRΔT
C.
Q
D.
W
Show solution
Solution
In an isochoric process, the change in internal energy is equal to the heat added to the system, ΔU = Q.
Correct Answer:
C
— Q
Learn More →
Q. What is the change in internal energy for an ideal gas that expands isothermally? (2019)
A.
nRT
B.
0
C.
-nRT
D.
nR(Tf - Ti)
Show solution
Solution
For an isothermal process, the change in internal energy (ΔU) for an ideal gas is zero, as ΔU depends only on temperature.
Correct Answer:
B
— 0
Learn More →
Q. What is the change in internal energy for an ideal gas undergoing an isochoric process?
A.
Zero
B.
Equal to the heat added
C.
Equal to the work done
D.
Equal to the change in temperature
Show solution
Solution
In an isochoric process, the volume remains constant, and the change in internal energy is equal to the heat added to the system.
Correct Answer:
B
— Equal to the heat added
Learn More →
Q. What is the change in internal energy of 1 mole of an ideal gas when it is heated at constant volume from 300 K to 600 K?
A.
0 J
B.
300 J
C.
600 J
D.
900 J
Show solution
Solution
ΔU = nCvΔT. For a monatomic gas, Cv = (3/2)R. ΔU = 1 * (3/2)(8.31 J/mol K)(600 - 300) = 900 J.
Correct Answer:
D
— 900 J
Learn More →
Q. What is the change in internal energy of a gas that absorbs 300 J of heat and does 100 J of work on the surroundings? (2020)
A.
200 J
B.
300 J
C.
400 J
D.
500 J
Show solution
Solution
Change in internal energy (ΔU) = Q - W = 300 J - 100 J = 200 J.
Correct Answer:
A
— 200 J
Learn More →
Q. What is the change in internal energy of a gas that absorbs 500 J of heat and does 200 J of work? (2022)
A.
300 J
B.
500 J
C.
700 J
D.
1000 J
Show solution
Solution
Using the first law of thermodynamics: ΔU = Q - W = 500 J - 200 J = 300 J.
Correct Answer:
A
— 300 J
Learn More →
Q. What is the change in internal energy of a gas that absorbs 500 J of heat and does 200 J of work on the surroundings? (2023)
A.
300 J
B.
500 J
C.
700 J
D.
900 J
Show solution
Solution
ΔU = Q - W = 500 J - 200 J = 300 J.
Correct Answer:
A
— 300 J
Learn More →
Q. What is the change in internal energy of a system if 200 J of heat is added and 50 J of work is done by the system?
A.
150 J
B.
250 J
C.
200 J
D.
100 J
Show solution
Solution
Using the first law of thermodynamics, ΔU = Q - W = 200 J - 50 J = 150 J.
Correct Answer:
A
— 150 J
Learn More →
Q. What is the change in internal energy of a system if 300 J of heat is added and 100 J of work is done by the system? (2021)
A.
200 J
B.
300 J
C.
400 J
D.
500 J
Show solution
Solution
Using the first law of thermodynamics: ΔU = Q - W = 300 J - 100 J = 200 J.
Correct Answer:
A
— 200 J
Learn More →
Showing 19291 to 19320 of 31669 (1056 Pages)
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!
