Q. Which of the following is a characteristic of sexual reproduction? (2022)
A.
Produces identical offspring
B.
Involves two parents
C.
Occurs in all organisms
D.
Faster than asexual reproduction
Show solution
Solution
Sexual reproduction typically involves two parents and results in offspring that are genetically diverse.
Correct Answer: B — Involves two parents
Learn More →
Q. Which of the following is a characteristic of the image formed by a concave mirror when the object is placed between the focal point and the mirror? (2019)
A.
Real and inverted
B.
Virtual and erect
C.
Real and erect
D.
Virtual and inverted
Show solution
Solution
When the object is placed between the focal point and the mirror, the image formed by a concave mirror is virtual and erect.
Correct Answer: B — Virtual and erect
Learn More →
Q. Which of the following is a characteristic of the kingdom Animalia? (2021)
A.
Cell walls
B.
Autotrophic nutrition
C.
Multicellular and heterotrophic
D.
Chlorophyll
Show solution
Solution
The kingdom Animalia consists of multicellular and heterotrophic organisms.
Correct Answer: C — Multicellular and heterotrophic
Learn More →
Q. Which of the following is a characteristic of the kingdom Monera? (2019)
A.
Eukaryotic cells
B.
Multicellular organisms
C.
Prokaryotic cells
D.
Chloroplasts
Show solution
Solution
Monera consists of prokaryotic cells, which are unicellular and lack a defined nucleus.
Correct Answer: C — Prokaryotic cells
Learn More →
Q. Which of the following is a characteristic of the kingdom Plantae? (2022)
A.
Heterotrophic
B.
Cellulose in cell walls
C.
Unicellular
D.
Motile
Show solution
Solution
Plants are characterized by having cellulose in their cell walls.
Correct Answer: B — Cellulose in cell walls
Learn More →
Q. Which of the following is a characteristic of the kingdom Protista?
A.
All are multicellular
B.
All are prokaryotic
C.
Includes both autotrophic and heterotrophic organisms
D.
Only unicellular organisms
Show solution
Solution
The kingdom Protista includes both autotrophic and heterotrophic organisms.
Correct Answer: C — Includes both autotrophic and heterotrophic organisms
Learn More →
Q. Which of the following is a characteristic of the phylum Annelida? (2023)
A.
Body is segmented
B.
Presence of a shell
C.
Radial symmetry
D.
Exoskeleton
Show solution
Solution
Annelida, or segmented worms, are characterized by their segmented bodies.
Correct Answer: A — Body is segmented
Learn More →
Q. Which of the following is a characteristic of the phylum Echinodermata? (2021)
A.
Bilateral symmetry
B.
Radial symmetry in adults
C.
Exoskeleton made of chitin
D.
Presence of a notochord
Show solution
Solution
Echinoderms exhibit radial symmetry in their adult form, which is a defining characteristic of this phylum.
Correct Answer: B — Radial symmetry in adults
Learn More →
Q. Which of the following is a characteristic of the phylum Nematoda? (2022)
A.
Segmented body
B.
Presence of a true coelom
C.
Body covered with a cuticle
D.
Radial symmetry
Show solution
Solution
Nematodes, or roundworms, are characterized by a body covered with a cuticle and are unsegmented.
Correct Answer: C — Body covered with a cuticle
Learn More →
Q. Which of the following is a characteristic of the phylum Porifera? (2019)
A.
True tissues
B.
Radial symmetry
C.
Body with pores
D.
Bilateral symmetry
Show solution
Solution
Phylum Porifera, which includes sponges, is characterized by a porous body structure.
Correct Answer: C — Body with pores
Learn More →
Q. Which of the following is a characteristic property of ethers? (2019)
A.
High boiling point
B.
Solubility in water
C.
Low reactivity
D.
Acidic nature
Show solution
Solution
Ethers are generally low in reactivity compared to alcohols and phenols, making them stable compounds.
Correct Answer: C — Low reactivity
Learn More →
Q. Which of the following is a characteristic property of group 13 elements? (2019)
A.
Forming covalent compounds
B.
High melting points
C.
Good conductors of electricity
D.
Forming ionic compounds
Show solution
Solution
Group 13 elements typically form covalent compounds due to their tendency to share electrons.
Correct Answer: A — Forming covalent compounds
Learn More →
Q. Which of the following is a characteristic property of halogens? (2020)
A.
Good conductors of electricity
B.
High melting points
C.
Diatomic molecules
D.
Metallic luster
Show solution
Solution
Halogens exist as diatomic molecules (e.g., Cl2, F2) in their elemental form.
Correct Answer: C — Diatomic molecules
Learn More →
Q. Which of the following is a characteristic property of noble gases? (2019)
A.
High reactivity
B.
Colorless and odorless
C.
Forming ionic bonds
D.
High boiling points
Show solution
Solution
Noble gases are colorless and odorless under standard conditions.
Correct Answer: B — Colorless and odorless
Learn More →
Q. Which of the following is a common allotrope of phosphorus? (2022)
A.
Red phosphorus
B.
Black phosphorus
C.
White phosphorus
D.
All of the above
Show solution
Solution
Phosphorus exists in several allotropes, including red, black, and white phosphorus.
Correct Answer: D — All of the above
Learn More →
Q. Which of the following is a common analgesic? (2021)
A.
Ibuprofen
B.
Aspirin
C.
Paracetamol
D.
All of the above
Show solution
Solution
All of the options listed (Ibuprofen, Aspirin, and Paracetamol) are common analgesics used to relieve pain.
Correct Answer: D — All of the above
Learn More →
Q. Which of the following is a common application of biotechnology in medicine? (2018)
A.
Bioremediation
B.
Gene cloning
C.
Fermentation
D.
Tissue culture
Show solution
Solution
Gene cloning is a common application in biotechnology for producing proteins and studying genes.
Correct Answer: B — Gene cloning
Learn More →
Q. Which of the following is a common application of biotechnology in the food industry? (2020)
A.
Fermentation
B.
Genetic modification
C.
Food preservation
D.
All of the above
Show solution
Solution
Biotechnology is widely used in the food industry for fermentation, genetic modification, and food preservation.
Correct Answer: D — All of the above
Learn More →
Q. Which of the following is a common application of biotechnology in the pharmaceutical industry? (2020)
A.
Production of biofuels
B.
Development of genetically modified crops
C.
Synthesis of therapeutic proteins
D.
Bioremediation of oil spills
Show solution
Solution
The synthesis of therapeutic proteins, such as insulin and monoclonal antibodies, is a common application of biotechnology in the pharmaceutical industry.
Correct Answer: C — Synthesis of therapeutic proteins
Learn More →
Q. Which of the following is a common application of microbes in agriculture? (2019)
A.
Pesticides
B.
Fertilizers
C.
Soil enhancement
D.
All of the above
Show solution
Solution
Microbes are used in agriculture for pesticides, fertilizers, and enhancing soil fertility.
Correct Answer: D — All of the above
Learn More →
Q. Which of the following is a common application of photodiodes? (2022)
A.
Voltage regulation
B.
Light detection
C.
Signal amplification
D.
Energy storage
Show solution
Solution
Photodiodes are commonly used for light detection in various applications.
Correct Answer: B — Light detection
Learn More →
Q. Which of the following is a common application of semiconductors? (2019)
A.
Light bulbs
B.
Transistors
C.
Resistors
D.
Capacitors
Show solution
Solution
Transistors are a common application of semiconductors, used in various electronic devices.
Correct Answer: B — Transistors
Learn More →
Q. Which of the following is a common artificial flavoring agent? (2023)
A.
Vanillin
B.
Caffeine
C.
Citric acid
D.
Tartaric acid
Show solution
Solution
Vanillin is a common artificial flavoring agent that mimics the flavor of vanilla.
Correct Answer: A — Vanillin
Learn More →
Q. Which of the following is a common emulsifier used in food products? (2022)
A.
Lecithin
B.
Sorbitol
C.
Glycerol
D.
Glucose
Show solution
Solution
Lecithin is a common emulsifier that helps to mix oil and water in food products.
Correct Answer: A — Lecithin
Learn More →
Q. Which of the following is a common ingredient in anti-aging creams? (2021)
A.
Retinol
B.
Glycolic acid
C.
Salicylic acid
D.
Both Retinol and Glycolic acid
Show solution
Solution
Both Retinol and Glycolic acid are commonly used in anti-aging creams for their skin rejuvenating properties.
Correct Answer: D — Both Retinol and Glycolic acid
Learn More →
Q. Which of the following is a common ingredient in anti-inflammatory drugs? (2022)
A.
Ibuprofen
B.
Acetaminophen
C.
Aspirin
D.
All of the above
Show solution
Solution
Ibuprofen, Acetaminophen, and Aspirin are all common ingredients in anti-inflammatory medications.
Correct Answer: D — All of the above
Learn More →
Q. Which of the following is a common method for producing transgenic plants? (2022)
A.
Microinjection
B.
Agrobacterium-mediated transformation
C.
Somatic cell nuclear transfer
D.
CRISPR-Cas9
Show solution
Solution
Agrobacterium-mediated transformation is a widely used method for producing transgenic plants by transferring genes into plant cells.
Correct Answer: B — Agrobacterium-mediated transformation
Learn More →
Q. Which of the following is a common method to measure surface area of adsorbents? (2019)
A.
TGA
B.
BET method
C.
DSC
D.
XRD
Show solution
Solution
The BET method (Brunauer-Emmett-Teller) is commonly used to measure the surface area of adsorbents.
Correct Answer: B — BET method
Learn More →
Q. Which of the following is a common oxidation state of gold? (2023)
Show solution
Solution
Gold commonly exhibits oxidation states of +1 and +3, with +3 being the most stable.
Correct Answer: C — +3
Learn More →
Q. Which of the following is a common oxidation state of iron? (2023)
Show solution
Solution
Iron commonly exhibits oxidation states of +2 and +3, with +3 being more prevalent in compounds.
Correct Answer: C — +3
Learn More →
Showing 2101 to 2130 of 2842 (95 Pages)