Q. Which of the following is a derivative of benzene?
A.
Ethylene
B.
Acetylene
C.
Phenol
D.
Propylene
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Solution
Phenol is a derivative of benzene, where one hydrogen atom is replaced by a hydroxyl group (-OH).
Correct Answer:
C
— Phenol
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Q. Which of the following is a derivative of carboxylic acid?
A.
Alcohol
B.
Aldehyde
C.
Ester
D.
Alkane
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Solution
Ester is a derivative of carboxylic acid formed by the reaction of an acid with an alcohol.
Correct Answer:
C
— Ester
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Q. Which of the following is a derived unit?
A.
Meter
B.
Kilogram
C.
Second
D.
Newton
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Solution
Newton is a derived unit as it is defined in terms of the base units: 1 N = 1 kg·m/s².
Correct Answer:
D
— Newton
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Q. Which of the following is a dicarboxylic acid?
A.
Acetic acid
B.
Oxalic acid
C.
Formic acid
D.
Butanoic acid
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Solution
Oxalic acid (C2H2O4) is a dicarboxylic acid as it contains two carboxylic acid groups.
Correct Answer:
B
— Oxalic acid
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Q. Which of the following is a direct consequence of biodiversity loss? (2023)
A.
Increased food security
B.
Enhanced ecosystem services
C.
Loss of ecosystem resilience
D.
Improved air quality
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Solution
Loss of biodiversity leads to a loss of ecosystem resilience, making ecosystems more vulnerable to changes.
Correct Answer:
C
— Loss of ecosystem resilience
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Q. Which of the following is a direct threat to biodiversity? (2022)
A.
Climate change
B.
Invasive species
C.
Habitat fragmentation
D.
All of the above
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Solution
All of the above options are direct threats to biodiversity, affecting species and ecosystems.
Correct Answer:
D
— All of the above
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Q. Which of the following is a disaccharide?
A.
Fructose
B.
Maltose
C.
Glucose
D.
Glycogen
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Solution
Maltose is a disaccharide composed of two glucose units.
Correct Answer:
B
— Maltose
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Q. Which of the following is a disadvantage of a partnership?
A.
Shared profits among partners
B.
Limited access to capital
C.
Increased liability for partners
D.
All of the above
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Solution
All of the options listed are disadvantages of a partnership, including shared profits, limited access to capital, and increased liability.
Correct Answer:
D
— All of the above
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Q. Which of the following is a disadvantage of asexual reproduction? (2022)
A.
Requires less energy
B.
Produces many offspring quickly
C.
Lack of genetic variation
D.
Can occur in isolation
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Solution
Asexual reproduction lacks genetic variation, which can make populations more vulnerable to diseases and environmental changes.
Correct Answer:
C
— Lack of genetic variation
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Q. Which of the following is a disadvantage of frequency modulation (FM) compared to amplitude modulation (AM)?
A.
Higher bandwidth requirement
B.
More susceptible to noise
C.
Lower fidelity
D.
Easier to demodulate
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Solution
FM requires a larger bandwidth than AM, which can be a disadvantage in certain communication systems.
Correct Answer:
A
— Higher bandwidth requirement
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Q. Which of the following is a disadvantage of Frequency Modulation (FM)?
A.
Less bandwidth
B.
More noise immunity
C.
Complex receiver design
D.
Simple implementation
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Solution
FM requires a more complex receiver design compared to AM.
Correct Answer:
C
— Complex receiver design
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Q. Which of the following is a disadvantage of partnerships?
A.
Shared decision-making
B.
Limited access to capital
C.
Unlimited liability for all partners
D.
Complex tax structure
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Solution
Unlimited liability for all partners is a significant disadvantage, as partners can be personally responsible for business debts.
Correct Answer:
C
— Unlimited liability for all partners
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Q. Which of the following is a disease caused by a virus? (2021)
A.
Tuberculosis
B.
Malaria
C.
HIV/AIDS
D.
Typhoid
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Solution
HIV/AIDS is caused by the Human Immunodeficiency Virus (HIV), which is a virus.
Correct Answer:
C
— HIV/AIDS
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Q. Which of the following is a duty of every citizen as per the Constitution of India? (2021)
A.
Right to Freedom
B.
Right to Equality
C.
Duty to abide by the Constitution
D.
Right to Constitutional Remedies
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Solution
It is the duty of every citizen to abide by the Constitution and respect its ideals and institutions.
Correct Answer:
C
— Duty to abide by the Constitution
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Q. Which of the following is a duty of Indian citizens as per the Constitution?
A.
Right to Education
B.
Right to Work
C.
To promote harmony
D.
Right to Privacy
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Solution
One of the Fundamental Duties under Article 51A is to promote harmony and the spirit of common brotherhood among all the people of India.
Correct Answer:
C
— To promote harmony
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Q. Which of the following is a factor affecting the rate of photosynthesis?
A.
Temperature
B.
Soil type
C.
Wind speed
D.
Humidity
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Solution
Temperature is a key factor affecting the rate of photosynthesis, as it influences enzyme activity involved in the process.
Correct Answer:
A
— Temperature
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Q. Which of the following is a factor affecting the rate of transpiration?
A.
Temperature
B.
Humidity
C.
Wind speed
D.
All of the above
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Solution
All of these factors influence the rate of transpiration in plants.
Correct Answer:
D
— All of the above
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Q. Which of the following is a factor of the polynomial x^2 - 9?
A.
x - 3
B.
x + 3
C.
Both x - 3 and x + 3
D.
None of the above
Show solution
Solution
The polynomial x^2 - 9 can be factored as (x - 3)(x + 3).
Correct Answer:
C
— Both x - 3 and x + 3
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Q. Which of the following is a family of exponential curves?
A.
y = e^x
B.
y = x^2
C.
y = log(x)
D.
y = sin(x)
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Solution
The equation y = e^x represents a family of exponential curves for different bases.
Correct Answer:
A
— y = e^x
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Q. Which of the following is a feature of algae? (2022)
A.
Presence of true roots
B.
Photosynthetic pigments
C.
Vascular tissues
D.
Seeds
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Solution
Algae are primarily characterized by their ability to perform photosynthesis using various pigments, but they do not have true roots or vascular tissues.
Correct Answer:
B
— Photosynthetic pigments
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Q. Which of the following is a feature of angiosperms? (2020)
A.
Produce seeds
B.
Have vascular tissues
C.
Produce flowers
D.
All of the above
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Solution
Angiosperms are characterized by producing seeds, having vascular tissues, and producing flowers.
Correct Answer:
D
— All of the above
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Q. Which of the following is a feature of bryophytes? (2018)
A.
Presence of seeds
B.
Presence of vascular tissues
C.
Moist habitats
D.
All of the above
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Solution
Bryophytes are non-vascular plants that typically thrive in moist habitats.
Correct Answer:
C
— Moist habitats
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Q. Which of the following is a feature of dicots? (2020)
A.
Single cotyledon
B.
Net-like venation
C.
Floral parts in multiples of three
D.
Fibrous root system
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Solution
Dicots are characterized by having two cotyledons and net-like venation in their leaves.
Correct Answer:
B
— Net-like venation
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Q. Which of the following is a feature of dicotyledons? (2020)
A.
Single seed leaf
B.
Net-like venation
C.
Floral parts in multiples of three
D.
Fibrous root system
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Solution
Dicotyledons are characterized by having two seed leaves (cotyledons) and net-like venation in their leaves.
Correct Answer:
B
— Net-like venation
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Q. Which of the following is a feature of external fertilization? (2022)
A.
Occurs inside the female body
B.
Requires water for sperm and egg to meet
C.
Produces fewer offspring
D.
Is more common in mammals
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Solution
External fertilization typically occurs in aquatic environments where sperm and eggs are released into the water.
Correct Answer:
B
— Requires water for sperm and egg to meet
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Q. Which of the following is a feature of fungi? (2023)
A.
Photosynthetic
B.
Chitin in cell walls
C.
Multicellular only
D.
Autotrophic
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Solution
Fungi have chitin in their cell walls, distinguishing them from plants.
Correct Answer:
B
— Chitin in cell walls
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Q. Which of the following is a feature of internal fertilization? (2023)
A.
Occurs in water
B.
Requires a moist environment
C.
Protects the developing embryo
D.
Involves external gametes
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Solution
Internal fertilization occurs inside the female's body, providing protection to the developing embryo.
Correct Answer:
C
— Protects the developing embryo
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Q. Which of the following is a feature of living organisms? (2021)
A.
They can be created from non-living matter
B.
They can reproduce
C.
They do not respond to stimuli
D.
They do not grow
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Solution
Living organisms have the ability to reproduce, which is a key feature of life.
Correct Answer:
B
— They can reproduce
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Q. Which of the following is a feature of monocots? (2020)
A.
Two cotyledons
B.
Parallel leaf venation
C.
Vascular bundles in a ring
D.
Tap root system
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Solution
Monocots are characterized by having parallel leaf venation and one cotyledon.
Correct Answer:
B
— Parallel leaf venation
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Q. Which of the following is a feature of monocotyledons? (2018)
A.
Two cotyledons
B.
Parallel venation
C.
Tap root system
D.
Presence of vascular cambium
Show solution
Solution
Monocotyledons are characterized by having parallel venation in their leaves.
Correct Answer:
B
— Parallel venation
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