Q. What is the primary mechanism of heat transfer in liquids?
-
A.
Conduction
-
B.
Convection
-
C.
Radiation
-
D.
All of the above
Solution
In liquids, convection is the primary mechanism of heat transfer, although conduction and radiation can also occur.
Correct Answer: B — Convection
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Q. What is the primary method for reducing carbon emissions in urban areas?
-
A.
Increasing fossil fuel use
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B.
Promoting public transportation
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C.
Encouraging deforestation
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D.
Reducing recycling efforts
Solution
Promoting public transportation is a primary method for reducing carbon emissions in urban areas.
Correct Answer: B — Promoting public transportation
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Q. What is the primary method for treating wastewater?
-
A.
Filtration
-
B.
Chlorination
-
C.
Biological treatment
-
D.
Incineration
Solution
Biological treatment is the primary method for treating wastewater, utilizing microorganisms to break down organic matter.
Correct Answer: C — Biological treatment
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Q. What is the primary method of heat transfer from the Sun to the Earth?
-
A.
Conduction
-
B.
Convection
-
C.
Radiation
-
D.
Conduction and Convection
Solution
The primary method of heat transfer from the Sun to the Earth is radiation, as it travels through the vacuum of space.
Correct Answer: C — Radiation
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Q. What is the primary method of reducing carbon emissions in transportation?
-
A.
Switching to electric vehicles
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B.
Increasing fossil fuel use
-
C.
Using more plastic
-
D.
Reducing public transport
Solution
Switching to electric vehicles is a primary method of reducing carbon emissions in transportation.
Correct Answer: A — Switching to electric vehicles
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Q. What is the primary method of reproduction in bacteria? (2021)
-
A.
Binary fission
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B.
Budding
-
C.
Fragmentation
-
D.
Sexual reproduction
Solution
Bacteria primarily reproduce asexually through binary fission, where a single cell divides into two identical cells.
Correct Answer: A — Binary fission
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Q. What is the primary method of treating wastewater?
-
A.
Incineration
-
B.
Filtration
-
C.
Biological treatment
-
D.
Chemical treatment
Solution
Biological treatment is a common method for treating wastewater, utilizing microorganisms to break down organic matter.
Correct Answer: C — Biological treatment
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Q. What is the primary method used to study the Earth's interior? (2023)
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A.
Seismic waves
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B.
Magnetic field analysis
-
C.
Gravitational studies
-
D.
Satellite imagery
Solution
Seismic waves generated by earthquakes are the primary method used to study the Earth's interior structure.
Correct Answer: A — Seismic waves
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Q. What is the primary method used to treat wastewater?
-
A.
Filtration
-
B.
Sedimentation
-
C.
Biological treatment
-
D.
Chemical treatment
Solution
Biological treatment is the primary method used to treat wastewater, utilizing microorganisms to break down organic matter.
Correct Answer: C — Biological treatment
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Q. What is the primary mode of heat transfer from the Sun to the Earth?
-
A.
Conduction
-
B.
Convection
-
C.
Radiation
-
D.
Conduction and Convection
Solution
The primary mode of heat transfer from the Sun to the Earth is radiation, as it travels through the vacuum of space.
Correct Answer: C — Radiation
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Q. What is the primary mode of heat transfer in a vacuum?
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A.
Conduction
-
B.
Convection
-
C.
Radiation
-
D.
Insulation
Solution
In a vacuum, there are no particles to conduct or convect heat, so radiation is the only mode of heat transfer.
Correct Answer: C — Radiation
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Q. What is the primary mode of heat transfer in liquids and gases?
-
A.
Conduction
-
B.
Convection
-
C.
Radiation
-
D.
None of the above
Solution
Convection is the primary mode of heat transfer in liquids and gases due to the movement of the fluid.
Correct Answer: B — Convection
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Q. What is the primary mode of nutrition in the kingdom Animalia? (2023)
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A.
Autotrophic
-
B.
Heterotrophic
-
C.
Saprophytic
-
D.
Parasitic
Solution
The primary mode of nutrition in the kingdom Animalia is heterotrophic.
Correct Answer: B — Heterotrophic
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Q. What is the primary mode of nutrition in the kingdom Plantae? (2022)
-
A.
Heterotrophic
-
B.
Saprophytic
-
C.
Autotrophic
-
D.
Parasitic
Solution
Plants primarily exhibit autotrophic nutrition through photosynthesis.
Correct Answer: C — Autotrophic
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Q. What is the primary mode of reproduction in angiosperms? (2023)
-
A.
Asexual reproduction
-
B.
Budding
-
C.
Fission
-
D.
Sexual reproduction
Solution
Angiosperms primarily reproduce through sexual reproduction, involving flowers and seeds.
Correct Answer: D — Sexual reproduction
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Q. What is the primary mode of reproduction in ferns? (2023)
-
A.
Asexual reproduction
-
B.
Sexual reproduction
-
C.
Vegetative propagation
-
D.
Budding
Solution
Ferns primarily reproduce through sexual reproduction, producing spores.
Correct Answer: B — Sexual reproduction
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Q. What is the primary mode of reproduction in unicellular organisms? (2020)
-
A.
Asexual reproduction
-
B.
Sexual reproduction
-
C.
Binary fission
-
D.
Budding
Solution
Unicellular organisms primarily reproduce asexually, often through processes like binary fission.
Correct Answer: A — Asexual reproduction
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Q. What is the primary monomer used in the production of polyethylene?
-
A.
Propylene
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B.
Ethylene
-
C.
Styrene
-
D.
Vinyl chloride
Solution
Polyethylene is primarily made from the polymerization of ethylene monomers.
Correct Answer: B — Ethylene
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Q. What is the primary monomer used to produce polystyrene?
-
A.
Ethylene
-
B.
Propylene
-
C.
Styrene
-
D.
Vinyl chloride
Solution
Styrene is the primary monomer used to produce polystyrene.
Correct Answer: C — Styrene
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Q. What is the primary muscle involved in the process of breathing? (2021)
-
A.
Diaphragm
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B.
Intercostal muscles
-
C.
Abdominal muscles
-
D.
Pectoral muscles
Solution
The diaphragm is the primary muscle that contracts and relaxes to facilitate breathing.
Correct Answer: A — Diaphragm
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Q. What is the primary objective of the 'Bharat Rural Livelihoods Foundation' established in 2005? (2005)
-
A.
To promote urban development.
-
B.
To enhance livelihood opportunities for rural poor.
-
C.
To provide healthcare services in urban areas.
-
D.
To support educational institutions.
Solution
The Bharat Rural Livelihoods Foundation was established to enhance livelihood opportunities for the rural poor, focusing on sustainable development.
Correct Answer: B — To enhance livelihood opportunities for rural poor.
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Q. What is the primary objective of the 'National Policy on Skill Development and Entrepreneurship' launched in India?
-
A.
To promote traditional crafts and handicrafts.
-
B.
To enhance the employability of youth through skill development.
-
C.
To provide financial assistance to small businesses.
-
D.
To increase the number of higher education institutions.
Solution
The policy aims to enhance the employability of youth by providing them with necessary skills and training.
Correct Answer: B — To enhance the employability of youth through skill development.
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Q. What is the primary objective of the National Policy on Disaster Management in India? (2009)
-
A.
To provide immediate relief to disaster victims
-
B.
To promote a culture of disaster preparedness and resilience
-
C.
To establish a national disaster response force
-
D.
To conduct research on disaster management
Solution
The primary objective of the National Policy on Disaster Management is to promote a culture of disaster preparedness and resilience among communities.
Correct Answer: B — To promote a culture of disaster preparedness and resilience
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Q. What is the primary objective of the Pradhan Mantri Awas Yojana (PMAY)? (2022)
-
A.
To provide free education to all children
-
B.
To ensure housing for all by 2022
-
C.
To promote digital literacy
-
D.
To enhance agricultural productivity
Solution
The Pradhan Mantri Awas Yojana aims to provide affordable housing to the urban poor and ensure housing for all by the year 2022.
Correct Answer: B — To ensure housing for all by 2022
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Q. What is the primary oxidation state of aluminum in aluminum chloride (AlCl3)?
Solution
In aluminum chloride, aluminum has an oxidation state of +3.
Correct Answer: C — +3
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Q. What is the primary oxidation state of carbon in carbon dioxide (CO2)? (2020)
Solution
In carbon dioxide, carbon has an oxidation state of +4.
Correct Answer: B — +4
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Q. What is the primary oxidation state of chlorine in potassium chloride (KCl)?
Solution
In potassium chloride, chlorine has an oxidation state of -1.
Correct Answer: A — -1
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Q. What is the primary oxidation state of chlorine in sodium chloride (NaCl)?
Solution
In NaCl, chlorine has an oxidation state of -1.
Correct Answer: A — -1
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Q. What is the primary oxidation state of chromium in CrO3?
Solution
In CrO3, chromium has a primary oxidation state of +6.
Correct Answer: C — +6
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Q. What is the primary oxidation state of group 14 elements in their compounds?
Solution
Group 14 elements typically exhibit a +4 oxidation state in their compounds.
Correct Answer: B — +4
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