Q. Which layer of the Earth is primarily composed of molten rock?
-
A.
Crust
-
B.
Mantle
-
C.
Outer Core
-
D.
Inner Core
Solution
The Mantle is primarily composed of molten rock and is located between the crust and the outer core.
Correct Answer: B — Mantle
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Q. Which layer of the Earth is responsible for tectonic plate movement? (2019)
-
A.
Crust
-
B.
Mantle
-
C.
Outer Core
-
D.
Inner Core
Solution
The Mantle, particularly the asthenosphere, is responsible for the movement of tectonic plates.
Correct Answer: B — Mantle
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Q. Which layer of the Earth is solid and composed mainly of iron and nickel? (2021)
-
A.
Crust
-
B.
Mantle
-
C.
Outer Core
-
D.
Inner Core
Solution
The Inner Core is solid and composed mainly of iron and nickel, despite the high temperatures.
Correct Answer: D — Inner Core
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Q. Which layer of the Earth is the thickest? (2023)
-
A.
Crust
-
B.
Mantle
-
C.
Outer Core
-
D.
Inner Core
Solution
The Mantle is the thickest layer of the Earth, extending about 2900 km below the crust.
Correct Answer: B — Mantle
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Q. Which metal is commonly used in batteries?
-
A.
Lead
-
B.
Copper
-
C.
Iron
-
D.
Aluminum
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 known for its high resistance to corrosion?
-
A.
Iron
-
B.
Copper
-
C.
Aluminum
-
D.
Titanium
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 primarily used in the construction of aircraft due to its strength-to-weight ratio?
-
A.
Titanium
-
B.
Aluminum
-
C.
Steel
-
D.
Copper
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
Solution
Chromium is added to iron to produce stainless steel, enhancing its corrosion resistance.
Correct Answer: C — Chromium
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Q. Which mineral is crucial for oxygen transport in the blood?
-
A.
Calcium
-
B.
Iron
-
C.
Zinc
-
D.
Magnesium
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 mountain range separates India from Tibet?
-
A.
Western Ghats
-
B.
Himalayas
-
C.
Aravalli Range
-
D.
Vindhya Range
Solution
The Himalayas separate India from Tibet.
Correct Answer: B — Himalayas
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Q. Which movement was launched by Mahatma Gandhi in 1930 to protest against the salt tax? (1930)
-
A.
Non-Cooperation Movement
-
B.
Civil Disobedience Movement
-
C.
Quit India Movement
-
D.
Swadeshi Movement
Solution
The Civil Disobedience Movement was launched in 1930, prominently featuring the Salt March to Dandi.
Correct Answer: B — Civil Disobedience Movement
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Q. Which non-metal is a diatomic molecule at room temperature?
-
A.
Oxygen
-
B.
Nitrogen
-
C.
Hydrogen
-
D.
All of the above
Solution
Oxygen, Nitrogen, and Hydrogen are all diatomic molecules at room temperature.
Correct Answer: D — All of the above
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Q. Which non-metal is commonly used in fertilizers?
-
A.
Phosphorus
-
B.
Sulfur
-
C.
Chlorine
-
D.
Argon
Solution
Phosphorus is a key component in fertilizers, promoting plant growth.
Correct Answer: A — Phosphorus
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Q. Which non-metal is essential for the process of photosynthesis?
-
A.
Oxygen
-
B.
Carbon
-
C.
Nitrogen
-
D.
Hydrogen
Solution
Carbon is essential for photosynthesis as plants convert carbon dioxide into glucose.
Correct Answer: B — Carbon
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Q. Which nutrient is primarily responsible for muscle repair and growth?
-
A.
Carbohydrates
-
B.
Fats
-
C.
Proteins
-
D.
Minerals
Solution
Proteins are essential for muscle repair and growth due to their role in building and repairing tissues.
Correct Answer: C — Proteins
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Q. Which of the following compounds is a weak acid?
-
A.
Hydrochloric acid
-
B.
Nitric acid
-
C.
Acetic acid
-
D.
Sulfuric acid
Solution
Acetic acid (CH3COOH) is a weak acid that does not completely dissociate in solution.
Correct Answer: C — Acetic acid
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Q. Which of the following compounds is an alkali metal? (2023)
-
A.
Calcium
-
B.
Sodium
-
C.
Magnesium
-
D.
Aluminum
Solution
Sodium is an alkali metal, found in Group 1 of the periodic table, characterized by its high reactivity.
Correct Answer: B — Sodium
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Q. Which of the following compounds is an example of an alcohol?
-
A.
C2H5OH
-
B.
C2H4
-
C.
C3H6
-
D.
C4H10
Solution
C2H5OH is ethanol, which is an alcohol.
Correct Answer: A — C2H5OH
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Q. Which of the following compounds is formed when magnesium reacts with hydrochloric acid? (2020)
-
A.
MgCl2
-
B.
MgHCl
-
C.
MgO
-
D.
Mg(OH)2
Solution
Magnesium reacts with hydrochloric acid to form magnesium chloride (MgCl2) and hydrogen gas.
Correct Answer: A — MgCl2
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Q. Which of the following countries was not a founding member of the United Nations?
-
A.
United States
-
B.
China
-
C.
India
-
D.
Germany
Solution
Germany was not a founding member of the United Nations; it joined later.
Correct Answer: D — Germany
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Q. Which of the following events occurred in 2001, significantly impacting global politics? (2001)
-
A.
9/11 Attacks
-
B.
Iraq War
-
C.
Global Financial Crisis
-
D.
Brexit Referendum
Solution
The 9/11 attacks occurred on September 11, 2001, leading to major changes in global politics.
Correct Answer: A — 9/11 Attacks
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Q. Which of the following indicators is used to determine the endpoint of a strong acid-strong base titration?
-
A.
Methyl orange
-
B.
Phenolphthalein
-
C.
Bromothymol blue
-
D.
Litmus
Solution
Phenolphthalein is commonly used for strong acid-strong base titrations as it changes color at pH 8.2-10.
Correct Answer: B — Phenolphthalein
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Q. Which of the following indicators would be suitable for a titration between a strong acid and a strong base?
-
A.
Methyl orange
-
B.
Phenolphthalein
-
C.
Litmus
-
D.
Bromothymol blue
Solution
Phenolphthalein is suitable as it changes color around pH 7-10, which is ideal for strong acid-strong base titrations.
Correct Answer: B — Phenolphthalein
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Q. Which of the following is a complete protein source?
-
A.
Rice
-
B.
Beans
-
C.
Eggs
-
D.
Peanuts
Solution
Eggs are considered a complete protein source as they contain all essential amino acids.
Correct Answer: C — Eggs
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Q. Which of the following is a feature of the parliamentary system of government in India?
-
A.
Bicameral legislature
-
B.
Single executive
-
C.
Fixed tenure
-
D.
Direct elections
Solution
India has a bicameral legislature consisting of the Lok Sabha and the Rajya Sabha.
Correct Answer: A — Bicameral legislature
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Q. Which of the following is a flagship program aimed at improving sanitation and hygiene in rural areas?
-
A.
Swachh Bharat Mission
-
B.
Pradhan Mantri Gram Sadak Yojana
-
C.
National Rural Livelihoods Mission
-
D.
Bharatmala Pariyojana
Solution
The Swachh Bharat Mission is a flagship program aimed at improving sanitation and hygiene in rural areas.
Correct Answer: A — Swachh Bharat Mission
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Q. Which of the following is a flagship program aimed at improving sanitation in rural areas? (2014)
-
A.
Swachh Bharat Mission
-
B.
Pradhan Mantri Awas Yojana
-
C.
National Rural Livelihood Mission
-
D.
Beti Bachao Beti Padhao
Solution
The Swachh Bharat Mission is a flagship program aimed at improving sanitation and hygiene in rural areas.
Correct Answer: A — Swachh Bharat Mission
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Q. Which of the following is a function of the cell membrane? (2022)
-
A.
Energy production
-
B.
Regulating entry and exit of substances
-
C.
Protein synthesis
-
D.
Photosynthesis
Solution
The cell membrane regulates the entry and exit of substances, maintaining homeostasis within the cell.
Correct Answer: B — Regulating entry and exit of substances
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Q. Which of the following is a Fundamental Duty of every citizen of India?
-
A.
To vote in elections
-
B.
To promote the spirit of common brotherhood
-
C.
To serve in the armed forces
-
D.
To pay income tax
Solution
Promoting the spirit of common brotherhood among all the people of India is a Fundamental Duty under Article 51A.
Correct Answer: B — To promote the spirit of common brotherhood
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Q. Which of the following is a major factor in the formation of rainforests?
-
A.
Altitude
-
B.
Latitude
-
C.
Soil type
-
D.
Wind direction
Solution
Latitude is a major factor in the formation of rainforests, as they are typically found near the equator.
Correct Answer: B — Latitude
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