Q. Find the item that does not belong to the group.
A.
Piano
B.
Guitar
C.
Violin
D.
Car
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Solution
Car is a vehicle, while the others are musical instruments.
Correct Answer: D — Car
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Q. Identify the item that does not belong to the group.
A.
Shirt
B.
Pants
C.
Hat
D.
Apple
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Solution
Apple is a fruit, while the others are clothing items.
Correct Answer: D — Apple
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Q. Identify the odd one out from the following group.
A.
Dog
B.
Cat
C.
Elephant
D.
Car
Show solution
Solution
Car is not an animal, while the others are.
Correct Answer: D — Car
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Q. In which method are ions separated based on their mass-to-charge ratio? (2022)
A.
Chromatography
B.
Mass spectrometry
C.
Electrophoresis
D.
Titration
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Solution
Mass spectrometry separates ions based on their mass-to-charge ratio, allowing for the identification of different groups.
Correct Answer: B — Mass spectrometry
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Q. Select the item that is different from the rest.
A.
Football
B.
Basketball
C.
Tennis
D.
Piano
Show solution
Solution
Piano is a musical instrument, while the others are sports.
Correct Answer: D — Piano
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Q. What is the main advantage of using chromatography for group identification? (2021)
A.
Speed
B.
Cost-effectiveness
C.
High resolution
D.
Simplicity
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Solution
Chromatography offers high resolution, allowing for the effective separation and identification of complex mixtures.
Correct Answer: C — High resolution
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Q. What is the primary principle behind the use of spectroscopy for group identification? (2020)
A.
Separation of mixtures
B.
Absorption of light
C.
Chemical reactivity
D.
Phase changes
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Solution
Spectroscopy relies on the absorption of light by substances, which can be used to identify different groups based on their unique absorption spectra.
Correct Answer: B — Absorption of light
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Q. What type of information can nuclear magnetic resonance (NMR) provide for group identification? (2019)
A.
Molecular weight
B.
Chemical structure
C.
Color change
D.
pH level
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Solution
Nuclear magnetic resonance (NMR) provides detailed information about the chemical structure of compounds, aiding in group identification.
Correct Answer: B — Chemical structure
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Q. Which method involves the movement of charged particles in an electric field? (2020)
A.
Chromatography
B.
Electrophoresis
C.
Spectroscopy
D.
Titration
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Solution
Electrophoresis involves the movement of charged particles in an electric field, which can be used to separate and identify groups.
Correct Answer: B — Electrophoresis
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Q. Which method is commonly used for identifying groups in a chemical reaction? (2021)
A.
Spectroscopy
B.
Chromatography
C.
Titration
D.
Electrophoresis
Show solution
Solution
Chromatography is a technique used to separate and identify components in a mixture, making it effective for group identification.
Correct Answer: B — Chromatography
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Q. Which method is often used in forensic science for group identification? (2023)
A.
Mass spectrometry
B.
Filtration
C.
Titration
D.
Chromatography
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Solution
Mass spectrometry is widely used in forensic science for the identification of substances and groups due to its accuracy and sensitivity.
Correct Answer: A — Mass spectrometry
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Q. Which of the following does not belong to the same category?
A.
Lion
B.
Tiger
C.
Elephant
D.
Cheetah
Show solution
Solution
Elephant is a herbivore, while the others are carnivores.
Correct Answer: C — Elephant
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Q. Which of the following does not fit in the group?
A.
Red
B.
Blue
C.
Green
D.
Circle
Show solution
Solution
Circle is a shape, while the others are colors.
Correct Answer: D — Circle
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Q. Which of the following does not fit with the others?
A.
Mercury
B.
Venus
C.
Earth
D.
Sunflower
Show solution
Solution
Sunflower is a plant, while the others are planets.
Correct Answer: D — Sunflower
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Q. Which of the following groups does not belong with the others?
A.
Apple
B.
Banana
C.
Carrot
D.
Grapes
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Solution
Carrot is a vegetable while the others are fruits.
Correct Answer: C — Carrot
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Q. Which of the following is a limitation of using titration for group identification? (2022)
A.
Requires large sample sizes
B.
Only identifies specific groups
C.
Time-consuming
D.
Expensive equipment
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Solution
Titration typically identifies specific groups and may not be suitable for complex mixtures, making it a limitation in group identification.
Correct Answer: B — Only identifies specific groups
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Q. Which of the following methods is NOT typically used for group identification? (2019)
A.
Mass spectrometry
B.
Nuclear magnetic resonance
C.
Filtration
D.
Infrared spectroscopy
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Solution
Filtration is a physical separation method and does not identify chemical groups, unlike the other methods listed.
Correct Answer: C — Filtration
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Q. Which one of the following is different from the others?
A.
Rose
B.
Tulip
C.
Daisy
D.
Oak
Show solution
Solution
Oak is a tree, while the others are flowers.
Correct Answer: D — Oak
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Q. Which technique is best suited for identifying functional groups in organic compounds? (2023)
A.
Titration
B.
Infrared spectroscopy
C.
Filtration
D.
Electrophoresis
Show solution
Solution
Infrared spectroscopy is particularly effective for identifying functional groups due to the characteristic absorption bands associated with different groups.
Correct Answer: B — Infrared spectroscopy
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