Undergraduate
Q. What term describes the role of an organism in its environment? (2019)
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A.
Habitat
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B.
Niche
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C.
Biome
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D.
Community
Solution
The niche of an organism refers to its role and position in its environment, including all interactions with biotic and abiotic factors.
Correct Answer: B — Niche
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Q. What term describes the variety of life in a particular habitat or ecosystem? (2022)
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A.
Genetic diversity
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B.
Species diversity
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C.
Ecosystem diversity
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D.
Biodiversity
Solution
Species diversity refers to the variety of life in a particular habitat or ecosystem.
Correct Answer: B — Species diversity
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Q. What term describes the variety of life in the world or in a particular habitat? (2021)
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A.
Ecosystem
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B.
Biodiversity
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C.
Population
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D.
Community
Solution
Biodiversity refers to the variety of life in the world or in a particular habitat.
Correct Answer: B — Biodiversity
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Q. What term is used to describe the scientific study of living organisms? (2022)
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A.
Biology
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B.
Zoology
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C.
Botany
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D.
Ecology
Solution
Biology is the scientific study of living organisms, encompassing various sub-disciplines such as zoology and botany.
Correct Answer: A — Biology
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Q. What term is used to describe the variety of life in the world or in a particular habitat or ecosystem? (2022)
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A.
Biodiversity
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B.
Ecology
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C.
Biology
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D.
Genetics
Solution
Biodiversity refers to the variety of life in the world or in a particular habitat or ecosystem.
Correct Answer: A — Biodiversity
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Q. What type of adsorption is characterized by a low heat of adsorption, typically less than 40 kJ/mol? (2023)
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A.
Physisorption
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B.
Chemisorption
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C.
Multilayer adsorption
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D.
Surface reaction
Solution
Physisorption is characterized by a low heat of adsorption, typically less than 40 kJ/mol, due to weak van der Waals forces.
Correct Answer: A — Physisorption
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Q. What type of adsorption is characterized by the formation of a chemical bond? (2019)
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A.
Physisorption
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B.
Chemisorption
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C.
Desorption
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D.
Multilayer adsorption
Solution
Chemisorption is characterized by the formation of a chemical bond between the adsorbate and the surface.
Correct Answer: B — Chemisorption
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Q. What type of amine is formed when ammonia reacts with an alkyl halide? (2022)
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A.
Primary amine
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B.
Secondary amine
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C.
Tertiary amine
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D.
Quaternary ammonium salt
Solution
The reaction of ammonia with an alkyl halide initially forms a primary amine.
Correct Answer: A — Primary amine
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Q. What type of biomolecule are enzymes? (2019)
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A.
Carbohydrates
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B.
Proteins
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C.
Lipids
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D.
Nucleic acids
Solution
Enzymes are primarily proteins that catalyze biochemical reactions.
Correct Answer: B — Proteins
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Q. What type of biomolecule is DNA? (2022)
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A.
Protein
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B.
Carbohydrate
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C.
Lipid
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D.
Nucleic acid
Solution
DNA is classified as a nucleic acid, which stores and transmits genetic information.
Correct Answer: D — Nucleic acid
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Q. What type of biomolecule is RNA? (2014)
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A.
Protein
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B.
Carbohydrate
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C.
Nucleic Acid
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D.
Lipid
Solution
RNA is classified as a nucleic acid, which plays a crucial role in protein synthesis.
Correct Answer: C — Nucleic Acid
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Q. What type of bond is formed between sodium (Na) and chlorine (Cl) in NaCl? (2019)
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A.
Covalent bond
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B.
Ionic bond
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C.
Metallic bond
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D.
Hydrogen bond
Solution
NaCl is formed by the transfer of an electron from sodium to chlorine, resulting in an ionic bond.
Correct Answer: B — Ionic bond
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Q. What type of bond is formed between two atoms that share electrons? (2022)
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A.
Ionic bond
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B.
Covalent bond
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C.
Metallic bond
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D.
Hydrogen bond
Solution
A covalent bond is formed when two atoms share electrons.
Correct Answer: B — Covalent bond
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Q. What type of bond is formed when two atoms share electrons? (2023)
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A.
Ionic bond
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B.
Covalent bond
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C.
Metallic bond
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D.
Hydrogen bond
Solution
A covalent bond is formed when two atoms share electrons to achieve stability.
Correct Answer: B — Covalent bond
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Q. What type of bond is formed when two atoms share electrons? (2023) 2023
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A.
Ionic bond
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B.
Covalent bond
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C.
Metallic bond
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D.
Hydrogen bond
Solution
A covalent bond is formed when two atoms share electrons to achieve stability.
Correct Answer: B — Covalent bond
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Q. What type of bond is present in a carbon-carbon double bond?
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A.
Single bond
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B.
Double bond
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C.
Triple bond
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D.
Quadruple bond
Solution
A carbon-carbon double bond consists of one sigma bond and one pi bond, making it a double bond.
Correct Answer: B — Double bond
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Q. What type of bond is present in alkenes?
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A.
Single bond
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B.
Double bond
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C.
Triple bond
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D.
Quadruple bond
Solution
Alkenes contain at least one double bond between carbon atoms.
Correct Answer: B — Double bond
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Q. What type of bond is present in alkynes? (2022)
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A.
Single bond
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B.
Double bond
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C.
Triple bond
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D.
Quadruple bond
Solution
Alkynes contain at least one triple bond between carbon atoms.
Correct Answer: C — Triple bond
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Q. What type of bond is present in O2? (2022)
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A.
Single bond
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B.
Double bond
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C.
Triple bond
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D.
Quadruple bond
Solution
O2 has a double bond, as two pairs of electrons are shared between the two oxygen atoms.
Correct Answer: B — Double bond
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Q. What type of bond is primarily found in organic compounds? (2023)
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A.
Ionic bonds
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B.
Covalent bonds
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C.
Metallic bonds
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D.
Hydrogen bonds
Solution
Organic compounds primarily consist of covalent bonds formed between carbon and other atoms.
Correct Answer: B — Covalent bonds
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Q. What type of bond is primarily responsible for the strength of polymers?
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A.
Ionic bond
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B.
Covalent bond
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C.
Hydrogen bond
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D.
Metallic bond
Solution
Covalent bonds are primarily responsible for the strength and stability of polymer chains.
Correct Answer: B — Covalent bond
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Q. What type of bond is primarily responsible for the structure of polymers?
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A.
Ionic bond
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B.
Covalent bond
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C.
Hydrogen bond
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D.
Metallic bond
Solution
Covalent bonds are primarily responsible for the structure of polymers, linking monomers together.
Correct Answer: B — Covalent bond
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Q. What type of bond links amino acids together in a protein? (2023) 2023
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A.
Ionic bond
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B.
Covalent bond
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C.
Hydrogen bond
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D.
Peptide bond
Solution
A peptide bond is a specific type of covalent bond that links amino acids together in proteins.
Correct Answer: D — Peptide bond
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Q. What type of bond links amino acids together? (2023)
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A.
Ionic bond
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B.
Hydrogen bond
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C.
Peptide bond
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D.
Disulfide bond
Solution
A peptide bond links amino acids in proteins.
Correct Answer: C — Peptide bond
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Q. What type of charge carriers are predominant in n-type semiconductors? (2020)
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A.
Holes
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B.
Electrons
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C.
Protons
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D.
Neutrons
Solution
In n-type semiconductors, electrons are the predominant charge carriers.
Correct Answer: B — Electrons
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Q. What type of charge carriers are present in n-type semiconductors? (2019)
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A.
Holes
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B.
Electrons
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C.
Protons
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D.
Neutrons
Solution
In n-type semiconductors, the majority charge carriers are electrons.
Correct Answer: B — Electrons
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Q. What type of connective tissue connects muscles to bones? (2021)
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A.
Tendons
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B.
Ligaments
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C.
Cartilage
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D.
Adipose tissue
Solution
Tendons are connective tissues that connect muscles to bones, allowing for movement.
Correct Answer: A — Tendons
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Q. What type of connective tissue stores fat in the body? (2021)
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A.
Adipose tissue
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B.
Cartilage
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C.
Bone
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D.
Blood
Solution
Adipose tissue is a type of connective tissue that stores fat and provides insulation and cushioning.
Correct Answer: A — Adipose tissue
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Q. What type of crystal system does a diamond belong to? (2023)
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A.
Cubic
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B.
Tetragonal
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C.
Hexagonal
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D.
Orthorhombic
Solution
Diamond crystallizes in a cubic crystal system, specifically in a face-centered cubic lattice.
Correct Answer: A — Cubic
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Q. What type of decay involves the conversion of a neutron into a proton? (2023)
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A.
Alpha decay
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B.
Beta decay
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C.
Gamma decay
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D.
Positron emission
Solution
Beta decay involves the conversion of a neutron into a proton, emitting a beta particle (electron).
Correct Answer: B — Beta decay
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