Q. What is the main factor that drives ocean currents?
A.
Wind
B.
Salinity
C.
Temperature
D.
Gravity
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Solution
Wind is the primary factor that drives ocean currents, influencing their direction and speed.
Correct Answer:
A
— Wind
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Q. What is the main factor that influences climate in a region?
A.
Altitude
B.
Latitude
C.
Longitude
D.
Population
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Solution
Latitude is the main factor that influences climate in a region.
Correct Answer:
B
— Latitude
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Q. What is the main factor that influences ocean currents?
A.
Wind
B.
Salinity
C.
Temperature
D.
All of the above
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Solution
All of the above factors influence ocean currents.
Correct Answer:
D
— All of the above
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Q. What is the main factor that influences the climate of a region?
A.
Altitude
B.
Latitude
C.
Longitude
D.
Population density
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Solution
Latitude is the main factor that influences the climate of a region.
Correct Answer:
B
— Latitude
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Q. What is the main feature of a primary alcohol?
A.
The hydroxyl group is attached to a carbon with one alkyl group
B.
The hydroxyl group is attached to a carbon with two alkyl groups
C.
The hydroxyl group is attached to a carbon with three alkyl groups
D.
The hydroxyl group is attached to a carbon in a ring
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Solution
A primary alcohol has the hydroxyl group (-OH) attached to a carbon atom that is bonded to only one other carbon atom.
Correct Answer:
A
— The hydroxyl group is attached to a carbon with one alkyl group
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Q. What is the main feature of addition polymerization?
A.
Involves the loss of small molecules
B.
Involves the addition of monomers without by-products
C.
Requires a catalyst
D.
Involves the formation of cross-linked structures
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Solution
Addition polymerization involves the addition of monomers to form a polymer without the loss of small molecules.
Correct Answer:
B
— Involves the addition of monomers without by-products
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Q. What is the main feature of addition polymers?
A.
They release small molecules during polymerization
B.
They are formed from monomers with double bonds
C.
They have a high degree of crystallinity
D.
They are always biodegradable
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Solution
Addition polymers are formed from monomers that contain double bonds, which open up to form long chains.
Correct Answer:
B
— They are formed from monomers with double bonds
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Q. What is the main feature of aromatic compounds?
A.
Presence of double bonds
B.
Presence of a benzene ring
C.
Presence of hydroxyl groups
D.
Presence of carboxylic groups
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Solution
Aromatic compounds are characterized by the presence of a benzene ring.
Correct Answer:
B
— Presence of a benzene ring
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Q. What is the main feature of condensation polymerization?
A.
It produces small molecules as byproducts
B.
It requires high temperatures
C.
It involves ionic bonds
D.
It is a reversible reaction
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Solution
Condensation polymerization produces small molecules, such as water, as byproducts.
Correct Answer:
A
— It produces small molecules as byproducts
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Q. What is the main feature of elastomers?
A.
High tensile strength
B.
Elasticity
C.
Brittleness
D.
Thermal stability
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Solution
Elastomers are characterized by their elasticity, allowing them to stretch and return to their original shape.
Correct Answer:
B
— Elasticity
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Q. What is the main feature of terminal alkynes?
A.
They have a triple bond in the middle
B.
They can form carbanions
C.
They are less acidic than alkenes
D.
They cannot undergo substitution reactions
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Solution
Terminal alkynes can form carbanions due to the acidity of the hydrogen atom attached to the sp-hybridized carbon.
Correct Answer:
B
— They can form carbanions
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Q. What is the main feature of the Atal Pension Yojana? (2015)
A.
To provide loans to farmers
B.
To offer a guaranteed pension to workers in the unorganized sector
C.
To promote digital payments
D.
To enhance women's savings
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Solution
The Atal Pension Yojana offers a guaranteed pension to workers in the unorganized sector, ensuring financial security in old age.
Correct Answer:
B
— To offer a guaranteed pension to workers in the unorganized sector
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Q. What is the main feature that distinguishes alkynes from alkenes?
A.
Presence of double bonds
B.
Presence of triple bonds
C.
Saturation
D.
Molecular weight
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Solution
Alkynes are distinguished from alkenes by the presence of triple bonds.
Correct Answer:
B
— Presence of triple bonds
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Q. What is the main flaw in the argument presented in the passage?
A.
It relies too heavily on anecdotal evidence.
B.
It fails to consider counterarguments.
C.
It is based on outdated information.
D.
It lacks a clear conclusion.
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Solution
The main flaw in the argument is that it fails to consider counterarguments, which weakens the overall validity of the claims made.
Correct Answer:
B
— It fails to consider counterarguments.
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Q. What is the main focus of the 'Atmanirbhar Bharat' initiative launched by the Indian government?
A.
Self-reliance in manufacturing
B.
Boosting exports
C.
Increasing foreign investments
D.
Enhancing tourism
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Solution
'Atmanirbhar Bharat' focuses on self-reliance in manufacturing and reducing dependency on imports.
Correct Answer:
A
— Self-reliance in manufacturing
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Q. What is the main focus of the 'Skill India' initiative launched by the Indian government?
A.
To promote entrepreneurship
B.
To enhance vocational training
C.
To provide scholarships for higher education
D.
To support small businesses
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Solution
'Skill India' focuses on enhancing vocational training and skill development among the youth.
Correct Answer:
B
— To enhance vocational training
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Q. What is the main focus of the Beti Bachao Beti Padhao scheme?
A.
To promote women's entrepreneurship
B.
To improve the sex ratio and promote education for girls
C.
To provide financial aid for women's health
D.
To enhance women's political participation
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Solution
The Beti Bachao Beti Padhao scheme focuses on improving the child sex ratio and promoting education for girls.
Correct Answer:
B
— To improve the sex ratio and promote education for girls
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Q. What is the main focus of the World Health Organization (WHO)? (1948)
A.
Economic development
B.
Global health issues
C.
Environmental protection
D.
Human rights
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Solution
The World Health Organization (WHO) focuses on global health issues and aims to improve health outcomes worldwide.
Correct Answer:
B
— Global health issues
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Q. What is the main focus of topology in modern mathematics?
A.
The study of shapes and their properties under continuous transformations
B.
The analysis of numerical data sets
C.
The calculation of areas and volumes
D.
The exploration of algebraic structures
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Solution
Topology is primarily concerned with the study of shapes and their properties under continuous transformations, distinguishing it from other branches of mathematics.
Correct Answer:
A
— The study of shapes and their properties under continuous transformations
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Q. What is the main force that holds the nucleus together? (2020)
A.
Electromagnetic force
B.
Gravitational force
C.
Weak nuclear force
D.
Strong nuclear force
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Solution
The strong nuclear force is the primary force that holds the nucleons (protons and neutrons) together in the nucleus.
Correct Answer:
D
— Strong nuclear force
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Q. What is the main function of a power supply unit (PSU) in a computer? (2022)
A.
To cool the system
B.
To provide power to components
C.
To store data
D.
To connect peripherals
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Solution
The power supply unit (PSU) converts electrical power from an outlet into usable power for the computer's internal components.
Correct Answer:
B
— To provide power to components
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Q. What is the main function of a salt bridge in a galvanic cell?
A.
To provide a path for electrons
B.
To maintain charge balance
C.
To increase voltage
D.
To decrease resistance
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Solution
The main function of a salt bridge is to maintain charge balance by allowing ions to flow.
Correct Answer:
B
— To maintain charge balance
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Q. What is the main function of a transformer? (2014)
A.
Increase voltage
B.
Decrease voltage
C.
Change AC to DC
D.
Store energy
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Solution
The main function of a transformer is to increase or decrease the voltage in an AC circuit.
Correct Answer:
A
— Increase voltage
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Q. What is the main function of a transistor? (2022)
A.
Rectification
B.
Amplification
C.
Capacitance
D.
Inductance
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Solution
The main function of a transistor is to amplify electrical signals.
Correct Answer:
B
— Amplification
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Q. What is the main function of alveoli in the lungs? (2019)
A.
Gas exchange
B.
Air filtration
C.
Sound production
D.
Temperature regulation
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Solution
Alveoli are tiny air sacs in the lungs where the exchange of oxygen and carbon dioxide occurs, making them essential for respiration.
Correct Answer:
A
— Gas exchange
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Q. What is the main function of antibodies in the immune system? (2021)
A.
To destroy pathogens
B.
To produce hormones
C.
To transport oxygen
D.
To digest food
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Solution
Antibodies are proteins produced by the immune system to identify and neutralize pathogens such as bacteria and viruses.
Correct Answer:
A
— To destroy pathogens
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Q. What is the main function of carbohydrates in living organisms?
A.
Genetic information
B.
Energy storage
C.
Catalysis
D.
Structural support
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Solution
The main function of carbohydrates is energy storage and providing energy to living organisms.
Correct Answer:
B
— Energy storage
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Q. What is the main function of cartilage in the body? (2019)
A.
Support and flexibility
B.
Storage of fat
C.
Transport of nutrients
D.
Production of blood cells
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Solution
Cartilage provides support and flexibility to various structures in the body, such as joints and the rib cage.
Correct Answer:
A
— Support and flexibility
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Q. What is the main function of decomposers in an ecosystem? (2020)
A.
Produce energy
B.
Consume primary producers
C.
Recycle nutrients
D.
Provide shelter
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Solution
Decomposers recycle nutrients by breaking down dead organic matter, returning essential nutrients to the soil.
Correct Answer:
C
— Recycle nutrients
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Q. What is the main function of dietary fats?
A.
Energy storage
B.
Building muscle
C.
Regulating metabolism
D.
Enhancing immunity
Show solution
Solution
The main function of dietary fats is energy storage, providing 9 calories per gram.
Correct Answer:
A
— Energy storage
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