Q. Which of the following is a common artificial flavoring agent? (2023)
-
A.
Vanillin
-
B.
Caffeine
-
C.
Citric acid
-
D.
Tartaric acid
Solution
Vanillin is a common artificial flavoring agent that mimics the flavor of vanilla.
Correct Answer:
A
— Vanillin
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Q. Which of the following is a common emulsifier used in food products? (2022)
-
A.
Lecithin
-
B.
Sorbitol
-
C.
Glycerol
-
D.
Glucose
Solution
Lecithin is a common emulsifier that helps to mix oil and water in food products.
Correct Answer:
A
— Lecithin
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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
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
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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
Solution
Ibuprofen, Acetaminophen, and Aspirin are all common ingredients in anti-inflammatory medications.
Correct Answer:
D
— All of the above
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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
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
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Q. Which of the following is a common method for the preparation of haloalkanes? (2022)
-
A.
Hydrolysis of alcohols
-
B.
Halogenation of alkanes
-
C.
Dehydrohalogenation
-
D.
Reduction of ketones
Solution
Halogenation of alkanes is a common method for preparing haloalkanes, where alkanes react with halogens in the presence of UV light.
Correct Answer:
B
— Halogenation of alkanes
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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
Solution
The BET method (Brunauer-Emmett-Teller) is commonly used to measure the surface area of adsorbents.
Correct Answer:
B
— BET method
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Q. Which of the following is a common oxidation state of gold? (2023)
Solution
Gold commonly exhibits oxidation states of +1 and +3, with +3 being the most stable.
Correct Answer:
C
— +3
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Q. Which of the following is a common oxidation state of iron? (2023)
Solution
Iron commonly exhibits oxidation states of +2 and +3, with +3 being more prevalent in compounds.
Correct Answer:
C
— +3
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Q. Which of the following is a common oxidation state of manganese? (2022)
Solution
Manganese commonly exhibits an oxidation state of +2.
Correct Answer:
B
— +2
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Q. Which of the following is a common preservative in food? (2019)
-
A.
Sodium benzoate
-
B.
Ethanol
-
C.
Acetic acid
-
D.
Benzene
Solution
Sodium benzoate is widely used as a food preservative to prevent spoilage.
Correct Answer:
A
— Sodium benzoate
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Q. Which of the following is a common property of halogens? (2023)
-
A.
They are all gases at room temperature
-
B.
They have low electronegativity
-
C.
They form diatomic molecules
-
D.
They are metals
Solution
Halogens commonly exist as diatomic molecules (e.g., Cl2, F2).
Correct Answer:
C
— They form diatomic molecules
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Q. Which of the following is a common respiratory disease characterized by inflammation of the airways? (2022)
-
A.
Asthma
-
B.
Pneumonia
-
C.
Tuberculosis
-
D.
Emphysema
Solution
Asthma is a chronic condition that causes inflammation and narrowing of the airways, leading to difficulty in breathing.
Correct Answer:
A
— Asthma
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Q. Which of the following is a common side effect of antibiotics? (2019)
-
A.
Nausea
-
B.
Headache
-
C.
Diarrhea
-
D.
All of the above
Solution
Antibiotics can cause a range of side effects, including nausea, headache, and diarrhea.
Correct Answer:
D
— All of the above
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Q. Which of the following is a common source of dietary fiber? (2020)
-
A.
Meat
-
B.
Dairy
-
C.
Fruits
-
D.
Oils
Solution
Fruits are a common source of dietary fiber, which is important for digestive health.
Correct Answer:
C
— Fruits
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Q. Which of the following is a common source of omega-3 fatty acids? (2022)
-
A.
Olive oil
-
B.
Fish oil
-
C.
Butter
-
D.
Coconut oil
Solution
Fish oil is a rich source of omega-3 fatty acids, which are important for heart health and brain function.
Correct Answer:
B
— Fish oil
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Q. Which of the following is a common source of random error in measurements? (2022)
-
A.
Calibration errors
-
B.
Environmental changes
-
C.
Instrument defects
-
D.
Systematic bias
Solution
Environmental changes can cause variations in measurements, leading to random errors.
Correct Answer:
B
— Environmental changes
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Q. Which of the following is a common source of random error? (2023)
-
A.
Instrument calibration
-
B.
Environmental conditions
-
C.
Human reaction time
-
D.
Systematic bias
Solution
Human reaction time can introduce variability in measurements, leading to random errors.
Correct Answer:
C
— Human reaction time
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Q. Which of the following is a common symptom of chronic obstructive pulmonary disease (COPD)? (2023)
-
A.
Coughing
-
B.
Fever
-
C.
Nausea
-
D.
Headache
Solution
Coughing is a common symptom of COPD, often accompanied by mucus production and difficulty breathing.
Correct Answer:
A
— Coughing
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Q. Which of the following is a common symptom of diabetes? (2019)
-
A.
Increased thirst
-
B.
Skin rash
-
C.
Headache
-
D.
Nausea
Solution
Increased thirst is a common symptom of diabetes due to high blood sugar levels.
Correct Answer:
A
— Increased thirst
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Q. Which of the following is a common symptom of influenza? (2019)
-
A.
High fever
-
B.
Skin rash
-
C.
Nausea
-
D.
Joint pain
Solution
High fever is a common symptom of influenza, along with other symptoms like cough and body aches.
Correct Answer:
A
— High fever
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Q. Which of the following is a common symptom of pregnancy? (2020)
-
A.
Increased appetite
-
B.
Weight loss
-
C.
Frequent headaches
-
D.
Nausea
Solution
Nausea, often referred to as morning sickness, is a common symptom experienced during early pregnancy.
Correct Answer:
D
— Nausea
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Q. Which of the following is a common symptom of sexually transmitted infections? (2019)
-
A.
Headache
-
B.
Fever
-
C.
Unusual discharge
-
D.
Nausea
Solution
Unusual discharge is a common symptom associated with many sexually transmitted infections.
Correct Answer:
C
— Unusual discharge
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Q. Which of the following is a common symptom of STIs? (2019)
-
A.
Headache
-
B.
Fever
-
C.
Unusual discharge
-
D.
Nausea
Solution
Unusual discharge is a common symptom associated with many sexually transmitted infections.
Correct Answer:
C
— Unusual discharge
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Q. Which of the following is a common use of bacteria in agriculture? (2023)
-
A.
Pesticides
-
B.
Fertilizers
-
C.
Nitrogen fixation
-
D.
All of the above
Solution
Bacteria are used in agriculture for various purposes, including as pesticides, fertilizers, and for nitrogen fixation.
Correct Answer:
D
— All of the above
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Q. Which of the following is a common use of caffeine? (2020)
-
A.
Pain reliever
-
B.
Stimulant
-
C.
Antiseptic
-
D.
Antibiotic
Solution
Caffeine is primarily used as a stimulant to increase alertness and reduce fatigue.
Correct Answer:
B
— Stimulant
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Q. Which of the following is a common use of citric acid? (2022)
-
A.
Flavoring agent
-
B.
Preservative
-
C.
Cleaning agent
-
D.
All of the above
Solution
Citric acid is widely used as a flavoring agent, preservative, and cleaning agent, showcasing its multifunctional properties.
Correct Answer:
D
— All of the above
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Q. Which of the following is a common use of glycerol in food? (2021)
-
A.
Sweetener
-
B.
Preservative
-
C.
Thickening agent
-
D.
All of the above
Solution
Glycerol is used in food as a sweetener, preservative, and thickening agent, making it versatile in food applications.
Correct Answer:
D
— All of the above
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Q. Which of the following is a common use of glycerol? (2023)
-
A.
Preservative
-
B.
Moisturizer
-
C.
Sweetener
-
D.
All of the above
Solution
Glycerol is used as a preservative, moisturizer, and sweetener in various products.
Correct Answer:
D
— All of the above
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Q. Which of the following is a common use of microbes in agriculture? (2023)
-
A.
Pesticides
-
B.
Fertilizers
-
C.
Biopesticides
-
D.
All of the above
Solution
Microbes are used in agriculture for various purposes, including biopesticides and fertilizers.
Correct Answer:
D
— All of the above
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