Q. Which of the following is a saturated hydrocarbon?
-
A.
Ethylene
-
B.
Acetylene
-
C.
Cyclohexane
-
D.
Benzene
Solution
Cyclohexane is a saturated hydrocarbon, containing only single bonds.
Correct Answer:
C
— Cyclohexane
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Q. Which of the following is a secondary alcohol? (2021) 2021
-
A.
1-Pentanol
-
B.
2-Pentanol
-
C.
Cyclopentanol
-
D.
3-Pentanol
Solution
2-Pentanol has the hydroxyl group attached to a secondary carbon, making it a secondary alcohol.
Correct Answer:
B
— 2-Pentanol
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Q. Which of the following is a sign of potassium deficiency in plants? (2023)
-
A.
Stunted growth
-
B.
Leaf curling
-
C.
Chlorosis
-
D.
Necrosis
Solution
Potassium deficiency often results in leaf curling and marginal leaf scorch, indicating poor water regulation.
Correct Answer:
B
— Leaf curling
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Q. Which of the following is a source of genetic variation in a population? (2000)
-
A.
Mutation
-
B.
Natural selection
-
C.
Gene flow
-
D.
Both mutation and gene flow
Solution
Both mutation and gene flow contribute to genetic variation in a population, providing the raw material for evolution.
Correct Answer:
D
— Both mutation and gene flow
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Q. Which of the following is a source of genetic variation? (1937)
-
A.
Mutation
-
B.
Gene Flow
-
C.
Sexual Reproduction
-
D.
All of the above
Solution
All of the options listed (mutation, gene flow, and sexual reproduction) are sources of genetic variation in populations.
Correct Answer:
D
— All of the above
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Q. Which of the following is a strong acid? (2021) 2021
-
A.
HCl
-
B.
CH3COOH
-
C.
H2CO3
-
D.
NH3
Solution
Hydrochloric acid (HCl) is a strong acid that completely dissociates in water.
Correct Answer:
A
— HCl
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Q. Which of the following is a strong acid? (2023) 2023
-
A.
Acetic acid
-
B.
Citric acid
-
C.
Hydrochloric acid
-
D.
Carbonic acid
Solution
Hydrochloric acid (HCl) is a strong acid.
Correct Answer:
C
— Hydrochloric acid
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Q. Which of the following is a strong carboxylic acid?
-
A.
Formic acid
-
B.
Acetic acid
-
C.
Propanoic acid
-
D.
Butyric acid
Solution
Formic acid is considered a stronger carboxylic acid compared to the others listed.
Correct Answer:
A
— Formic acid
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Q. Which of the following is a sustainable practice? (2021)
-
A.
Overfishing
-
B.
Monoculture farming
-
C.
Organic farming
-
D.
Deforestation
Solution
Organic farming is considered a sustainable practice as it promotes biodiversity and reduces chemical inputs.
Correct Answer:
C
— Organic farming
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Q. Which of the following is a symptom of diabetes? (2020)
-
A.
Frequent urination
-
B.
High fever
-
C.
Coughing
-
D.
Skin rash
Solution
Frequent urination is a common symptom of diabetes due to high blood sugar levels.
Correct Answer:
A
— Frequent urination
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Q. Which of the following is a symptom of malaria? (2018)
-
A.
High fever
-
B.
Cough
-
C.
Rash
-
D.
Nausea
Solution
High fever is a common symptom of malaria, caused by Plasmodium parasites.
Correct Answer:
A
— High fever
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Q. Which of the following is a symptom of potassium deficiency in plants? (2022)
-
A.
Stunted growth
-
B.
Leaf curling
-
C.
Necrosis of leaf tips
-
D.
Yellowing of leaves
Solution
Necrosis of leaf tips is a common symptom of potassium deficiency, as potassium is vital for various physiological processes.
Correct Answer:
C
— Necrosis of leaf tips
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Q. Which of the following is a symptom of tuberculosis? (2019)
-
A.
High fever
-
B.
Persistent cough
-
C.
Skin rash
-
D.
Joint pain
Solution
A persistent cough is a common symptom of tuberculosis, along with other respiratory issues.
Correct Answer:
B
— Persistent cough
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Q. Which of the following is a synthetic dye used in food? (2023)
-
A.
Curcumin
-
B.
Tartrazine
-
C.
Beetroot red
-
D.
Carotene
Solution
Tartrazine is a synthetic yellow dye commonly used in food products.
Correct Answer:
B
— Tartrazine
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Q. Which of the following is a synthetic food colorant? (2021)
-
A.
Beetroot red
-
B.
Caramel
-
C.
Tartrazine
-
D.
Paprika
Solution
Tartrazine is a synthetic yellow food colorant commonly used in various food products.
Correct Answer:
C
— Tartrazine
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Q. Which of the following is a synthetic polymer used in everyday products? (2020)
-
A.
Cellulose
-
B.
Polystyrene
-
C.
Starch
-
D.
Chitin
Solution
Polystyrene is a synthetic polymer commonly used in packaging and insulation materials.
Correct Answer:
B
— Polystyrene
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Q. Which of the following is a synthetic polymer?
-
A.
Rubber
-
B.
Silk
-
C.
Wool
-
D.
Polyvinyl chloride
Solution
Polyvinyl chloride (PVC) is a synthetic polymer commonly used in construction and plumbing.
Correct Answer:
D
— Polyvinyl chloride
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Q. Which of the following is a synthetic sweetener? (2023)
-
A.
Fructose
-
B.
Xylitol
-
C.
Aspartame
-
D.
Honey
Solution
Aspartame is a synthetic sweetener used in many low-calorie and sugar-free products.
Correct Answer:
C
— Aspartame
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Q. Which of the following is a systematic error? (2020)
-
A.
Parallax error
-
B.
Zero error
-
C.
Random error
-
D.
Instrumental error
Solution
Systematic errors are consistent and repeatable errors associated with faulty equipment or a flawed experiment design, such as zero error.
Correct Answer:
B
— Zero error
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Q. Which of the following is a technique used for DNA sequencing? (2019)
-
A.
Sanger method
-
B.
Southern blotting
-
C.
Western blotting
-
D.
Northern blotting
Solution
The Sanger method is a widely used technique for DNA sequencing, allowing for the determination of the nucleotide sequence of DNA.
Correct Answer:
A
— Sanger method
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Q. Which of the following is a tertiary alcohol? (2021)
-
A.
2-propanol
-
B.
1-butanol
-
C.
Cyclopentanol
-
D.
1-pentanol
Solution
2-propanol (isopropanol) is a tertiary alcohol as the hydroxyl group is attached to a carbon that is connected to three other carbons.
Correct Answer:
A
— 2-propanol
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Q. Which of the following is a tertiary amine? (2022)
-
A.
CH3NH2
-
B.
C2H5NH2
-
C.
N(CH3)3
-
D.
C6H5NH2
Solution
N(CH3)3 (trimethylamine) is a tertiary amine as it has three alkyl groups attached to the nitrogen.
Correct Answer:
C
— N(CH3)3
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Q. Which of the following is a thermosetting polymer?
-
A.
Polyethylene
-
B.
Polystyrene
-
C.
Bakelite
-
D.
PVC
Solution
Bakelite is a thermosetting polymer, while the others are thermoplastics.
Correct Answer:
C
— Bakelite
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Q. Which of the following is a type of carbohydrate that is not digestible by humans? (2019)
-
A.
Glucose
-
B.
Fructose
-
C.
Cellulose
-
D.
Sucrose
Solution
Cellulose is a type of carbohydrate that humans cannot digest, but it is important for dietary fiber.
Correct Answer:
C
— Cellulose
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Q. Which of the following is a type of gymnosperm? (2023)
-
A.
Pine
-
B.
Rose
-
C.
Mango
-
D.
Coconut
Solution
Pine is a type of gymnosperm, known for its needle-like leaves and cones.
Correct Answer:
A
— Pine
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Q. Which of the following is a type of non-vascular plant? (2020)
-
A.
Fern
-
B.
Moss
-
C.
Pine
-
D.
Oak
Solution
Moss is a type of non-vascular plant, classified under bryophytes.
Correct Answer:
B
— Moss
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Q. Which of the following is a type of RNA that helps in the formation of ribosomes? (2018)
-
A.
mRNA
-
B.
tRNA
-
C.
rRNA
-
D.
snRNA
Solution
rRNA (ribosomal RNA) is a type of RNA that is a key component of ribosomes, facilitating protein synthesis.
Correct Answer:
C
— rRNA
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Q. Which of the following is a type of RNA that helps in the regulation of gene expression? (2020)
-
A.
mRNA
-
B.
tRNA
-
C.
rRNA
-
D.
miRNA
Solution
miRNA (microRNA) is a type of RNA that plays a role in regulating gene expression by binding to mRNA.
Correct Answer:
D
— miRNA
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Q. Which of the following is a unicellular eukaryote? (2023)
-
A.
Bacteria
-
B.
Yeast
-
C.
Amoeba
-
D.
Paramecium
Solution
Paramecium is a unicellular eukaryote.
Correct Answer:
D
— Paramecium
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Q. Which of the following is a unicellular eukaryotic organism? (2020)
-
A.
Bacteria
-
B.
Yeast
-
C.
Amoeba
-
D.
Paramecium
Solution
Paramecium is a unicellular eukaryotic organism.
Correct Answer:
D
— Paramecium
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