Q. Which structure is responsible for pollen production? (2020)
A.
Ovary
B.
Anther
C.
Style
D.
Stigma
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Solution
The anther is the part of the stamen that produces pollen.
Correct Answer: B — Anther
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Q. Which structure is responsible for the synthesis of ATP? (2022)
A.
Chloroplast
B.
Mitochondria
C.
Nucleus
D.
Golgi apparatus
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Solution
Mitochondria are responsible for the synthesis of ATP through cellular respiration.
Correct Answer: B — Mitochondria
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Q. Which structure is responsible for the synthesis of lipids? (2021)
A.
Smooth endoplasmic reticulum
B.
Rough endoplasmic reticulum
C.
Golgi apparatus
D.
Mitochondria
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Solution
The smooth endoplasmic reticulum is involved in the synthesis of lipids and detoxification processes.
Correct Answer: A — Smooth endoplasmic reticulum
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Q. Which structure is responsible for the synthesis of ribosomal RNA? (2021)
A.
Nucleus
B.
Nucleolus
C.
Ribosome
D.
Endoplasmic reticulum
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Solution
The nucleolus is the site within the nucleus where ribosomal RNA (rRNA) is synthesized.
Correct Answer: B — Nucleolus
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Q. Which structure is responsible for the transport of sperm? (2020)
A.
Urethra
B.
Vas deferens
C.
Seminal vesicle
D.
Prostate gland
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Solution
The vas deferens is responsible for the transport of sperm from the epididymis to the ejaculatory duct.
Correct Answer: B — Vas deferens
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Q. Which structure prevents the backflow of food from the stomach to the esophagus? (2020)
A.
Pyloric sphincter
B.
Cardiac sphincter
C.
Ileocecal valve
D.
Anal sphincter
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Solution
The cardiac sphincter, also known as the lower esophageal sphincter, prevents the backflow of food from the stomach to the esophagus.
Correct Answer: B — Cardiac sphincter
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Q. Which structure protects the developing seeds in a flowering plant? (2021)
A.
Ovary
B.
Anther
C.
Filament
D.
Pistil
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Solution
The ovary protects the developing seeds and will mature into the fruit after fertilization.
Correct Answer: A — Ovary
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Q. Which substituent has both +M and -I effects?
A.
-OH
B.
-NH2
C.
-COOH
D.
-NO2
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Solution
-NH2 has a +M effect due to resonance donation and a -I effect due to electronegativity.
Correct Answer: B — -NH2
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Q. Which substituent is a strong +I and +M director?
A.
-NO2
B.
-OH
C.
-CN
D.
-COOH
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Solution
-OH is a strong +I and +M director due to its ability to donate electron density through resonance.
Correct Answer: B — -OH
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Q. Which substituent is a strong +M director?
A.
-CHO
B.
-NO2
C.
-OH
D.
-Br
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Solution
The -OH group is a strong +M director due to its ability to donate electron density through resonance.
Correct Answer: C — -OH
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Q. Which system in the body is primarily responsible for fighting infections?
A.
Nervous System
B.
Digestive System
C.
Immune System
D.
Respiratory System
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Solution
The immune system is primarily responsible for fighting infections.
Correct Answer: C — Immune System
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Q. Which system is responsible for the body's response to stress?
A.
Nervous system
B.
Endocrine system
C.
Immune system
D.
Both A and B
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Solution
Both the nervous and endocrine systems work together to manage the body's response to stress.
Correct Answer: D — Both A and B
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Q. Which system is responsible for the exchange of gases in the body? (2023)
A.
Digestive system
B.
Nervous system
C.
Respiratory system
D.
Circulatory system
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Solution
The respiratory system is responsible for the exchange of gases in the body.
Correct Answer: C — Respiratory system
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Q. Which system is responsible for the production of hormones in the body?
A.
Nervous system
B.
Endocrine system
C.
Circulatory system
D.
Muscular system
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Solution
The endocrine system produces hormones that regulate various functions in the body, including growth, metabolism, and mood.
Correct Answer: B — Endocrine system
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Q. Which system is responsible for the production of hormones?
A.
Nervous system
B.
Endocrine system
C.
Circulatory system
D.
Muscular system
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Solution
The endocrine system produces hormones that regulate various functions in the body.
Correct Answer: B — Endocrine system
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Q. Which tab in Word would you use to change the font style? (2023)
A.
Home
B.
Insert
C.
Layout
D.
Review
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Solution
The Home tab in Word is where you can change the font style.
Correct Answer: A — Home
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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
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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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Q. Which technology company announced the launch of its first electric car in 2021? (2021)
A.
Apple
B.
Google
C.
Tesla
D.
Amazon
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Solution
Apple announced plans for its first electric car, known as Project Titan, in 2021.
Correct Answer: A — Apple
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Q. Which theorem is used to find the moment of inertia of a body about an axis that is parallel to an axis through its center of mass?
A.
Perpendicular axis theorem
B.
Parallel axis theorem
C.
Pythagorean theorem
D.
Conservation of angular momentum
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Solution
The parallel axis theorem is used to find the moment of inertia about an axis parallel to one through the center of mass.
Correct Answer: B — Parallel axis theorem
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Q. Which transition metal has the electron configuration [Ar] 3d6 4s2?
A.
Titanium
B.
Iron
C.
Nickel
D.
Cobalt
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Solution
Iron (Fe) has the electron configuration [Ar] 3d6 4s2.
Correct Answer: B — Iron
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Q. Which transition metal has the highest melting point?
A.
Iron
B.
Tungsten
C.
Nickel
D.
Copper
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Solution
Tungsten (W) has the highest melting point among transition metals.
Correct Answer: B — Tungsten
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Q. Which transition metal is known for forming complex ions with a coordination number of 6?
A.
Copper
B.
Nickel
C.
Cobalt
D.
Zinc
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Solution
Cobalt commonly forms complex ions with a coordination number of 6, such as in [Co(NH3)6]3+.
Correct Answer: C — Cobalt
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Q. Which transition metal is known for forming complex ions with a variety of ligands?
A.
Zinc (Zn)
B.
Copper (Cu)
C.
Iron (Fe)
D.
Nickel (Ni)
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Solution
Copper (Cu) is known for forming complex ions with a variety of ligands due to its ability to adopt multiple oxidation states.
Correct Answer: B — Copper (Cu)
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Q. Which transition metal is known for forming complex ions?
A.
Calcium
B.
Copper
C.
Sodium
D.
Magnesium
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Solution
Copper (Cu) is well-known for forming various complex ions due to its ability to coordinate with ligands.
Correct Answer: B — Copper
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Q. Which transition metal is known for its ability to form complex ions with a variety of ligands?
A.
Zinc (Zn)
B.
Copper (Cu)
C.
Iron (Fe)
D.
Nickel (Ni)
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Solution
Copper (Cu) is known for its ability to form complex ions with a variety of ligands due to its d-orbital configuration.
Correct Answer: C — Iron (Fe)
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Q. Which transition metal is known for its catalytic properties in the Haber process?
A.
Iron
B.
Nickel
C.
Copper
D.
Cobalt
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Solution
Iron is used as a catalyst in the Haber process for ammonia synthesis.
Correct Answer: A — Iron
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Q. Which treaty ended the First Anglo-Sikh War?
A.
Treaty of Amritsar
B.
Treaty of Lahore
C.
Treaty of Delhi
D.
Treaty of Paris
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Solution
The Treaty of Lahore was signed in 1846, marking the end of the First Anglo-Sikh War.
Correct Answer: B — Treaty of Lahore
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Q. Which treaty ended World War I and imposed heavy reparations on Germany? (1919)
A.
Treaty of Versailles
B.
Treaty of Trianon
C.
Treaty of Saint-Germain
D.
Treaty of Brest-Litovsk
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Solution
The Treaty of Versailles, signed in 1919, officially ended World War I and imposed heavy reparations and territorial losses on Germany.
Correct Answer: A — Treaty of Versailles
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Q. Which treaty ended World War I? (1919)
A.
Treaty of Versailles
B.
Treaty of Paris
C.
Treaty of Trianon
D.
Treaty of Brest-Litovsk
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Solution
The Treaty of Versailles was signed in 1919 and officially ended World War I.
Correct Answer: A — Treaty of Versailles
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Q. Which treaty marked the end of the First Anglo-Sikh War and established British control over Punjab?
A.
Treaty of Amritsar
B.
Treaty of Lahore
C.
Treaty of Delhi
D.
Treaty of Simla
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Solution
The Treaty of Lahore, signed in 1846, marked the end of the First Anglo-Sikh War and established British control over Punjab.
Correct Answer: B — Treaty of Lahore
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