Q. Which material has the highest resistivity?
A.
Copper
B.
Aluminum
C.
Iron
D.
Rubber
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Solution
Rubber has a much higher resistivity compared to metals like copper, aluminum, and iron.
Correct Answer:
D
— Rubber
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Q. Which material has the lowest resistivity?
A.
Copper
B.
Aluminum
C.
Silver
D.
Iron
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Solution
Silver has the lowest resistivity among common materials.
Correct Answer:
C
— Silver
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Q. Which measure of dispersion is affected by extreme values?
A.
Range
B.
Variance
C.
Standard Deviation
D.
All of the above
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Solution
All of these measures are affected by extreme values in the data set.
Correct Answer:
D
— All of the above
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Q. Which measure of dispersion is not affected by extreme values?
A.
Range
B.
Variance
C.
Standard Deviation
D.
Interquartile Range
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Solution
Interquartile Range is not affected by extreme values.
Correct Answer:
D
— Interquartile Range
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Q. Which medieval empire is noted for its significant contributions to environmental management through the establishment of extensive irrigation systems?
A.
A. The Gupta Empire
B.
B. The Mughal Empire
C.
C. The Ottoman Empire
D.
D. The Byzantine Empire
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Solution
The Mughal Empire (16th to 18th centuries) is known for its advanced irrigation systems, which significantly improved agricultural productivity and environmental management.
Correct Answer:
B
— B. The Mughal Empire
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Q. Which medieval Indian ruler is credited with the establishment of the first wildlife sanctuary in India?
A.
Akbar
B.
Ashoka
C.
Sher Shah Suri
D.
Jahangir
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Solution
Jahangir, the Mughal emperor, is credited with establishing the first wildlife sanctuary in India, reflecting his interest in nature and conservation.
Correct Answer:
D
— Jahangir
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Q. Which memory type is primarily used when recalling a historical event? (2023)
A.
Semantic memory
B.
Figural memory
C.
Episodic memory
D.
Procedural memory
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Solution
Episodic memory is used for recalling specific historical events and personal experiences.
Correct Answer:
C
— Episodic memory
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Q. Which metal is commonly used in batteries?
A.
Lead
B.
Copper
C.
Iron
D.
Aluminum
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Solution
Lead is commonly used in lead-acid batteries due to its ability to store electrical energy.
Correct Answer:
A
— Lead
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Q. Which metal is commonly used in the production of alloys? (2021)
A.
Lead
B.
Tin
C.
Mercury
D.
Bismuth
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Solution
Tin is commonly used in the production of alloys, such as bronze and solder.
Correct Answer:
B
— Tin
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Q. Which metal is commonly used in the production of batteries? (2023)
A.
Lead
B.
Zinc
C.
Copper
D.
Iron
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Solution
Lead is commonly used in lead-acid batteries due to its ability to store electrical energy.
Correct Answer:
A
— Lead
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Q. Which metal is commonly used in the production of stainless steel? (2023)
A.
Iron
B.
Lead
C.
Copper
D.
Zinc
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Solution
Iron is the primary metal used in the production of stainless steel, often alloyed with chromium and nickel.
Correct Answer:
A
— Iron
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Q. Which metal is known for its high resistance to corrosion?
A.
Iron
B.
Copper
C.
Aluminum
D.
Titanium
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Solution
Titanium is known for its high resistance to corrosion, making it suitable for various applications.
Correct Answer:
D
— Titanium
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Q. Which metal is known for its resistance to corrosion?
A.
Iron
B.
Copper
C.
Aluminum
D.
Gold
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Solution
Gold is highly resistant to corrosion and tarnishing, making it valuable for jewelry and electronics.
Correct Answer:
D
— Gold
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Q. Which metal is primarily used in the construction of aircraft due to its strength-to-weight ratio?
A.
Titanium
B.
Aluminum
C.
Steel
D.
Copper
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Solution
Aluminum is primarily used in aircraft construction because of its favorable strength-to-weight ratio.
Correct Answer:
B
— Aluminum
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Q. Which metal is primarily used in the production of stainless steel?
A.
Iron
B.
Nickel
C.
Chromium
D.
Zinc
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Solution
Chromium is added to iron to produce stainless steel, enhancing its corrosion resistance.
Correct Answer:
C
— Chromium
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Q. Which metal is used in the production of stainless steel?
A.
Nickel
B.
Zinc
C.
Tin
D.
Lead
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Solution
Nickel is used in the production of stainless steel to enhance its corrosion resistance.
Correct Answer:
A
— Nickel
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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
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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 microbe is primarily responsible for the fermentation of vinegar? (2021)
A.
Yeast
B.
Lactic acid bacteria
C.
Acetic acid bacteria
D.
Molds
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Solution
Acetic acid bacteria are responsible for the fermentation process that converts alcohol into vinegar.
Correct Answer:
C
— Acetic acid bacteria
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Q. Which microbe is primarily responsible for the production of vinegar? (2020)
A.
Yeast
B.
Lactic acid bacteria
C.
Acetic acid bacteria
D.
Molds
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Solution
Acetic acid bacteria are responsible for the fermentation process that produces vinegar.
Correct Answer:
C
— Acetic acid bacteria
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Q. Which microbe is primarily responsible for the production of yogurt? (2018)
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 microbe is primarily responsible for the spoilage of food? (2019)
A.
Bacteria
B.
Fungi
C.
Viruses
D.
Both bacteria and fungi
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Solution
Both bacteria and fungi can cause food spoilage through their metabolic activities.
Correct Answer:
D
— Both bacteria and fungi
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Q. Which mineral is crucial for oxygen transport in the blood?
A.
Calcium
B.
Iron
C.
Zinc
D.
Magnesium
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Solution
Iron is crucial for oxygen transport as it is a key component of hemoglobin in red blood cells.
Correct Answer:
B
— Iron
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Q. Which mineral is crucial for the formation of hemoglobin?
A.
Calcium
B.
Iron
C.
Zinc
D.
Magnesium
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Solution
Iron is a key component of hemoglobin, which carries oxygen in the blood.
Correct Answer:
B
— Iron
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Q. Which mineral is primarily involved in the formation of chlorophyll? (2019)
A.
Magnesium
B.
Calcium
C.
Phosphorus
D.
Sulfur
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Solution
Magnesium is a central component of the chlorophyll molecule, essential for photosynthesis.
Correct Answer:
A
— Magnesium
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Q. Which mineral is primarily involved in the synthesis of chlorophyll? (2019)
A.
Magnesium
B.
Calcium
C.
Phosphorus
D.
Iron
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Solution
Magnesium is a central component of the chlorophyll molecule, which is essential for photosynthesis.
Correct Answer:
A
— Magnesium
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Q. Which modulation technique is most commonly used in digital communication systems?
A.
Amplitude Modulation (AM)
B.
Frequency Modulation (FM)
C.
Phase Shift Keying (PSK)
D.
Quadrature Amplitude Modulation (QAM)
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Solution
Quadrature Amplitude Modulation (QAM) is widely used in digital communication systems due to its efficiency in transmitting data.
Correct Answer:
D
— Quadrature Amplitude Modulation (QAM)
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Q. Which modulation technique is most commonly used in FM radio broadcasting?
A.
Amplitude Modulation
B.
Frequency Modulation
C.
Phase Modulation
D.
Pulse Code Modulation
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Solution
Frequency Modulation (FM) is the standard technique used in FM radio broadcasting due to its resistance to noise.
Correct Answer:
B
— Frequency Modulation
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Q. Which modulation technique is most commonly used in television broadcasting?
A.
Amplitude Modulation (AM)
B.
Frequency Modulation (FM)
C.
Phase Modulation (PM)
D.
Pulse Code Modulation (PCM)
Show solution
Solution
Frequency Modulation (FM) is commonly used in television broadcasting due to its better noise immunity.
Correct Answer:
B
— Frequency Modulation (FM)
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