Q. What is the main function of the root system in flowering plants? (2020)
A.
Photosynthesis
B.
Anchorage and absorption of water
C.
Reproduction
D.
Storage of food
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Solution
The root system primarily anchors the plant and absorbs water and nutrients from the soil.
Correct Answer:
B
— Anchorage and absorption of water
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Q. What is the main function of the seminal vesicles? (2022)
A.
Production of sperm
B.
Production of seminal fluid
C.
Storage of sperm
D.
Nourishment of the embryo
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Solution
The main function of the seminal vesicles is the production of seminal fluid, which nourishes and helps transport sperm.
Correct Answer:
B
— Production of seminal fluid
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Q. What is the main function of the sepals? (2021)
A.
Attract pollinators
B.
Protect the flower bud
C.
Produce nectar
D.
Support the petals
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Solution
Sepals protect the flower bud before it opens and can also support the petals.
Correct Answer:
B
— Protect the flower bud
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Q. What is the main gas exchanged during respiration? (2019)
A.
Oxygen
B.
Carbon dioxide
C.
Nitrogen
D.
Hydrogen
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Solution
Oxygen is the main gas that is taken in during respiration and is essential for cellular metabolism.
Correct Answer:
A
— Oxygen
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Q. What is the main gas produced by plants during photosynthesis?
A.
Oxygen
B.
Carbon Dioxide
C.
Nitrogen
D.
Hydrogen
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Solution
Oxygen is the main gas produced by plants during photosynthesis.
Correct Answer:
A
— Oxygen
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Q. What is the main gas responsible for global warming? (2023)
A.
Oxygen
B.
Nitrogen
C.
Carbon Dioxide
D.
Helium
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Solution
Carbon Dioxide (CO2) is the main greenhouse gas responsible for global warming.
Correct Answer:
C
— Carbon Dioxide
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Q. What is the main goal of bioremediation? (2022)
A.
To produce biofuels
B.
To clean up contaminated environments
C.
To enhance soil fertility
D.
To increase crop yield
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Solution
Bioremediation aims to clean up contaminated environments using microorganisms, making option 'To clean up contaminated environments' the correct answer.
Correct Answer:
B
— To clean up contaminated environments
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Q. What is the main goal of conservation biology? (2023)
A.
To increase human population
B.
To protect endangered species
C.
To promote industrial development
D.
To enhance agricultural productivity
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Solution
The main goal of conservation biology is to protect endangered species and their habitats.
Correct Answer:
B
— To protect endangered species
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Q. What is the main goal of CPU scheduling?
A.
To maximize CPU utilization
B.
To minimize memory usage
C.
To increase disk access speed
D.
To reduce power consumption
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Solution
The main goal of CPU scheduling is to maximize CPU utilization by efficiently allocating CPU time to processes.
Correct Answer:
A
— To maximize CPU utilization
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Q. What is the main goal of family planning? (2023)
A.
To increase population growth
B.
To allow couples to decide the number and spacing of children
C.
To promote early pregnancies
D.
To discourage education
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Solution
Family planning allows couples to make informed decisions about the number and spacing of their children, promoting reproductive health.
Correct Answer:
B
— To allow couples to decide the number and spacing of children
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Q. What is the main goal of process synchronization?
A.
To increase CPU utilization
B.
To prevent race conditions
C.
To manage memory efficiently
D.
To optimize disk access
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Solution
The main goal of process synchronization is to prevent race conditions, ensuring that multiple processes can operate safely on shared data.
Correct Answer:
B
— To prevent race conditions
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Q. What is the main goal of sustainable development? (2023)
A.
Maximizing resource extraction
B.
Balancing economic growth with environmental protection
C.
Promoting industrialization
D.
Increasing population density
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Solution
Sustainable development aims to meet the needs of the present without compromising the ability of future generations to meet their own needs, balancing economic growth with environmental protection.
Correct Answer:
B
— Balancing economic growth with environmental protection
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Q. What is the main goal of the 'Beti Bachao Beti Padhao' scheme? (2015)
A.
To promote women's education
B.
To prevent female foeticide
C.
To empower women
D.
All of the above
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Solution
'Beti Bachao Beti Padhao' aims to promote women's education, prevent female foeticide, and empower women.
Correct Answer:
D
— All of the above
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Q. What is the main goal of the National Health Mission (NHM)? (2013)
A.
To provide free healthcare to all citizens
B.
To reduce maternal and infant mortality
C.
To promote health insurance
D.
To enhance medical research
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Solution
The National Health Mission aims to reduce maternal and infant mortality and improve healthcare services in rural areas.
Correct Answer:
B
— To reduce maternal and infant mortality
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Q. What is the main goal of the Pradhan Mantri Gram Sadak Yojana (PMGSY)? (2000)
A.
To provide electricity to rural areas
B.
To improve road connectivity in rural areas
C.
To enhance internet access in villages
D.
To promote rural tourism
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Solution
The main goal of PMGSY is to improve road connectivity in rural areas, facilitating better access to markets and services.
Correct Answer:
B
— To improve road connectivity in rural areas
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Q. What is the main goal of the Pradhan Mantri Ujjwala Yojana? (2016)
A.
To provide free education to girls
B.
To provide LPG connections to women from Below Poverty Line households
C.
To promote renewable energy
D.
To enhance rural infrastructure
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Solution
The Pradhan Mantri Ujjwala Yojana aims to provide LPG connections to women from Below Poverty Line households to promote clean cooking fuel.
Correct Answer:
B
— To provide LPG connections to women from Below Poverty Line households
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Q. What is the main goal of the Skill India Mission?
A.
To provide free education
B.
To enhance the skill sets of the youth
C.
To promote entrepreneurship
D.
To ensure food security
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Solution
The Skill India Mission aims to enhance the skill sets of the youth to make them employable and promote entrepreneurship.
Correct Answer:
B
— To enhance the skill sets of the youth
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Q. What is the main goal of the Swachh Bharat Mission? (2014)
A.
To promote digital literacy
B.
To eliminate open defecation
C.
To enhance agricultural productivity
D.
To provide affordable housing
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Solution
The Swachh Bharat Mission aims to eliminate open defecation and promote cleanliness.
Correct Answer:
B
— To eliminate open defecation
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Q. What is the main idea behind the concept of quantization in atomic physics? (2023)
A.
Energy levels are continuous
B.
Energy levels are discrete
C.
Electrons can exist anywhere
D.
Atoms are indivisible
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Solution
Quantization in atomic physics means that energy levels in an atom are discrete, not continuous.
Correct Answer:
B
— Energy levels are discrete
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Q. What is the main idea of the passage discussing the impact of climate change on polar bears?
A.
Polar bears are adapting to climate change.
B.
Climate change is leading to the extinction of polar bears.
C.
Polar bears are thriving in warmer temperatures.
D.
The diet of polar bears is changing due to climate change.
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Solution
The passage primarily highlights the threats posed by climate change to polar bear populations, emphasizing their risk of extinction.
Correct Answer:
B
— Climate change is leading to the extinction of polar bears.
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Q. What is the main idea of the passage discussing the impact of social media on communication? (2021)
A.
Social media has improved face-to-face communication.
B.
Social media has led to a decline in meaningful conversations.
C.
Social media is the primary source of news today.
D.
Social media platforms are only used by younger generations.
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Solution
The passage highlights how social media, while connecting people, has also contributed to superficial interactions, thus leading to a decline in meaningful conversations.
Correct Answer:
B
— Social media has led to a decline in meaningful conversations.
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Q. What is the main idea of the passage regarding climate change? (2023)
A.
Climate change is primarily caused by human activities.
B.
Climate change has no significant impact on biodiversity.
C.
Climate change is a natural phenomenon that occurs periodically.
D.
Climate change can be reversed with immediate action.
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Solution
The passage discusses the human impact on climate change, emphasizing the need for immediate action to mitigate its effects.
Correct Answer:
A
— Climate change is primarily caused by human activities.
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Q. What is the main idea of the passage regarding the impact of technology on education? (2021)
A.
Technology has no significant effect on education.
B.
Technology enhances the learning experience.
C.
Technology is detrimental to student engagement.
D.
Technology is only beneficial for teachers.
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Solution
The passage discusses various ways in which technology has improved access to information and engagement in learning, indicating that it enhances the learning experience.
Correct Answer:
B
— Technology enhances the learning experience.
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Q. What is the main idea of the passage?
A.
The importance of biodiversity.
B.
The impact of climate change on ecosystems.
C.
The role of conservation efforts.
D.
The relationship between humans and nature.
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Solution
The passage primarily discusses how climate change affects various ecosystems, making option 1 the correct choice.
Correct Answer:
B
— The impact of climate change on ecosystems.
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Q. What is the main impact of plastic pollution on marine life? (2022)
A.
Increased fish populations
B.
Habitat destruction
C.
Ingestion and entanglement
D.
Improved water quality
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Solution
Plastic pollution leads to ingestion and entanglement of marine animals, causing injury and death.
Correct Answer:
C
— Ingestion and entanglement
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Q. What is the main industrial method for producing hydrogen?
A.
Electrolysis of water
B.
Steam reforming of natural gas
C.
Thermal decomposition of water
D.
Photosynthesis
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Solution
The main industrial method for producing hydrogen is steam reforming of natural gas.
Correct Answer:
B
— Steam reforming of natural gas
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Q. What is the main ingredient in most sunscreens?
A.
Zinc oxide
B.
Vitamin E
C.
Aloe vera
D.
Coconut oil
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Solution
Zinc oxide is a common active ingredient in sunscreens that protects against UV rays.
Correct Answer:
A
— Zinc oxide
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Q. What is the main ingredient in vinegar that gives it its sour taste?
A.
Acetic acid
B.
Citric acid
C.
Lactic acid
D.
Formic acid
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Solution
Vinegar contains acetic acid, which is responsible for its sour taste.
Correct Answer:
A
— Acetic acid
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Q. What is the main ingredient in vinegar?
A.
Acetic acid
B.
Citric acid
C.
Lactic acid
D.
Formic acid
Show solution
Solution
Vinegar primarily consists of acetic acid, which gives it its sour taste.
Correct Answer:
A
— Acetic acid
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Q. What is the main language spoken in Brazil? (2023)
A.
Spanish
B.
Portuguese
C.
English
D.
French
Show solution
Solution
The main language spoken in Brazil is Portuguese.
Correct Answer:
B
— Portuguese
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