Q. Which of the following kingdoms includes organisms that are primarily autotrophic? (2019)
A.
Animalia
B.
Fungi
C.
Plantae
D.
Protista
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Solution
The kingdom Plantae includes organisms that are primarily autotrophic, meaning they produce their own food through photosynthesis.
Correct Answer:
C
— Plantae
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Q. Which of the following kingdoms includes organisms that can be both autotrophic and heterotrophic? (2019)
A.
Monera
B.
Fungi
C.
Plantae
D.
Protista
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Solution
The kingdom Protista includes organisms that can be both autotrophic and heterotrophic.
Correct Answer:
D
— Protista
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Q. Which of the following kingdoms includes organisms that can be both unicellular and multicellular? (2022)
A.
Monera
B.
Fungi
C.
Plantae
D.
Protista
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Solution
The kingdom Protista includes both unicellular and multicellular organisms.
Correct Answer:
D
— Protista
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Q. Which of the following kingdoms includes unicellular organisms? (2020)
A.
Animalia
B.
Plantae
C.
Fungi
D.
Protista
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Solution
The kingdom Protista includes unicellular organisms.
Correct Answer:
D
— Protista
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Q. Which of the following levels of organization is the highest? (2020)
A.
Cell
B.
Tissue
C.
Organ
D.
Organism
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Solution
The organism level of organization is the highest, as it encompasses all systems and structures functioning together as a single living entity.
Correct Answer:
D
— Organism
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Q. Which of the following ligands is a strong field ligand? (2021) 2021
A.
I-
B.
Br-
C.
CN-
D.
Cl-
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Solution
CN- is a strong field ligand that causes a large splitting of d-orbitals, leading to low-spin complexes.
Correct Answer:
C
— CN-
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Q. Which of the following lines is perpendicular to the line y = 3x + 1?
A.
y = -1/3x + 2
B.
y = 3x - 1
C.
y = 1/3x + 1
D.
y = -3x + 1
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Solution
The slope of the given line is 3. The slope of a line perpendicular to it is -1/3.
Correct Answer:
A
— y = -1/3x + 2
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Q. Which of the following materials has the highest tensile strength? (2020)
A.
Steel
B.
Aluminum
C.
Copper
D.
Rubber
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Solution
Steel has the highest tensile strength among the given materials.
Correct Answer:
A
— Steel
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Q. Which of the following materials has the highest thermal conductivity? (2020)
A.
Copper
B.
Wood
C.
Glass
D.
Air
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Solution
Copper has the highest thermal conductivity among the given materials.
Correct Answer:
A
— Copper
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Q. Which of the following materials is a common intrinsic semiconductor? (2020)
A.
Copper
B.
Silicon
C.
Aluminum
D.
Iron
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Solution
Silicon is a common intrinsic semiconductor used in electronic devices.
Correct Answer:
B
— Silicon
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Q. Which of the following materials is a ferromagnet? (2023)
A.
Copper
B.
Aluminum
C.
Iron
D.
Gold
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Solution
Iron is a ferromagnetic material, which means it can be magnetized and retains its magnetic properties.
Correct Answer:
C
— Iron
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Q. Which of the following materials is a ferromagnetic material? (2020)
A.
Copper
B.
Aluminum
C.
Iron
D.
Gold
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Solution
Iron is a ferromagnetic material, which means it can be magnetized and has a high magnetic permeability.
Correct Answer:
C
— Iron
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Q. Which of the following materials is a good conductor of electricity? (2019)
A.
Rubber
B.
Copper
C.
Glass
D.
Wood
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Solution
Copper is a good conductor of electricity due to its high number of free electrons.
Correct Answer:
B
— Copper
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Q. Which of the following materials is commonly used as a dielectric in capacitors? (2023)
A.
Copper
B.
Glass
C.
Iron
D.
Aluminum
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Solution
Glass is commonly used as a dielectric material in capacitors due to its high dielectric constant and insulating properties.
Correct Answer:
B
— Glass
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Q. Which of the following materials is considered a ferromagnetic material? (2021)
A.
Copper
B.
Aluminum
C.
Iron
D.
Gold
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Solution
Iron is a ferromagnetic material, which means it can be magnetized and retains its magnetic properties.
Correct Answer:
C
— Iron
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Q. Which of the following materials is considered a good conductor of electricity? (2022)
A.
Rubber
B.
Copper
C.
Wood
D.
Glass
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Solution
Copper is a good conductor of electricity due to its low resistance and high conductivity.
Correct Answer:
B
— Copper
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Q. Which of the following materials is considered ferromagnetic? (2022)
A.
Copper
B.
Aluminum
C.
Iron
D.
Gold
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Solution
Iron is considered a ferromagnetic material, which can be magnetized and retains its magnetism.
Correct Answer:
C
— Iron
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Q. Which of the following metals has the highest standard reduction potential? (2019)
A.
Gold
B.
Silver
C.
Copper
D.
Zinc
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Solution
Gold has the highest standard reduction potential among the given metals.
Correct Answer:
A
— Gold
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Q. Which of the following methods is considered a permanent form of contraception? (2022)
A.
IUD
B.
Vasectomy
C.
Condoms
D.
Birth control pills
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Solution
Vasectomy is a surgical procedure that provides a permanent form of contraception for males.
Correct Answer:
B
— Vasectomy
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Q. Which of the following methods is used to purify colloidal solutions? (2020)
A.
Filtration
B.
Centrifugation
C.
Dialysis
D.
Evaporation
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Solution
Dialysis is used to purify colloidal solutions by allowing the solvent and small solutes to pass through a semi-permeable membrane while retaining the colloidal particles.
Correct Answer:
C
— Dialysis
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Q. Which of the following methods is used to stabilize colloidal solutions? (2023)
A.
Electrolysis
B.
Coagulation
C.
Dialysis
D.
Electrophoresis
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Solution
Electrophoresis is used to stabilize colloidal solutions by applying an electric field to separate charged particles.
Correct Answer:
D
— Electrophoresis
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Q. Which of the following microbes is commonly used in the fermentation of food? (2021)
A.
Bacteria
B.
Viruses
C.
Fungi
D.
All of the above
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Solution
All of the mentioned microbes can be involved in fermentation processes, but bacteria and fungi are the most common.
Correct Answer:
D
— All of the above
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Q. Which of the following microbes is commonly used in the fermentation of yogurt? (2021)
A.
Lactobacillus
B.
Escherichia coli
C.
Staphylococcus
D.
Bacillus subtilis
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Solution
Lactobacillus is the primary bacterium used in the fermentation process to produce yogurt.
Correct Answer:
A
— Lactobacillus
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Q. Which of the following microbes is used in the production of antibiotics? (2020)
A.
Bacteria
B.
Viruses
C.
Fungi
D.
Protozoa
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Solution
Fungi, particularly the genus Penicillium, are used in the production of antibiotics like penicillin.
Correct Answer:
C
— Fungi
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Q. Which of the following microbes is used in the production of biofertilizers? (2022)
A.
Rhizobium
B.
Streptococcus
C.
Clostridium
D.
Bacillus cereus
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Solution
Rhizobium is a bacterium that forms symbiotic relationships with legumes and is used in biofertilizers for nitrogen fixation.
Correct Answer:
A
— Rhizobium
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Q. Which of the following microbes is used in the production of biofuels? (2023)
A.
Bacteria
B.
Viruses
C.
Fungi
D.
All of the above
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Solution
Bacteria are commonly used in the production of biofuels through fermentation processes.
Correct Answer:
A
— Bacteria
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Q. Which of the following microbes is used in the production of insulin? (2023)
A.
Bacteria
B.
Viruses
C.
Fungi
D.
Algae
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Solution
Genetically modified bacteria are used in the production of insulin for diabetes treatment.
Correct Answer:
A
— Bacteria
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Q. Which of the following microbes is used in the production of yogurt? (2021)
A.
Lactobacillus
B.
Escherichia coli
C.
Staphylococcus
D.
Bacillus subtilis
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Solution
Lactobacillus is the primary bacterium used in the fermentation of milk to produce yogurt.
Correct Answer:
A
— Lactobacillus
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Q. Which of the following molecules has a polar covalent bond? (2023)
A.
Cl2
B.
H2O
C.
CH4
D.
O2
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Solution
Water (H2O) has a polar covalent bond due to the difference in electronegativity between hydrogen and oxygen.
Correct Answer:
B
— H2O
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Q. Which of the following molecules has a polar covalent bond? (2023) 2023
A.
Cl2
B.
H2O
C.
CH4
D.
O2
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Solution
Water (H2O) has a polar covalent bond due to the difference in electronegativity between hydrogen and oxygen.
Correct Answer:
B
— H2O
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