Q. Which non-metal is used in the production of fertilizers? (2022)
A.
Nitrogen
B.
Oxygen
C.
Helium
D.
Argon
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Solution
Nitrogen is a key component in fertilizers, essential for plant growth.
Correct Answer:
A
— Nitrogen
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Q. Which nutrient is essential for the synthesis of chlorophyll?
A.
Nitrogen
B.
Phosphorus
C.
Potassium
D.
Calcium
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Solution
Nitrogen is a key component of chlorophyll and is essential for its synthesis, thus playing a crucial role in photosynthesis.
Correct Answer:
A
— Nitrogen
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Q. Which nutrient is most important for muscle repair?
A.
Carbohydrates
B.
Proteins
C.
Fats
D.
Vitamins
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Solution
Proteins are essential for muscle repair and growth due to their amino acid content.
Correct Answer:
B
— Proteins
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Q. Which nutrient is primarily responsible for muscle repair and growth?
A.
Carbohydrates
B.
Fats
C.
Proteins
D.
Minerals
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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 acts was passed in 1919 to curb the freedom of Indians? (1919)
A.
Government of India Act
B.
Rowlatt Act
C.
Montagu-Chelmsford Reforms
D.
Indian Independence Act
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Solution
The Rowlatt Act of 1919 was enacted to suppress the growing unrest among Indians.
Correct Answer:
B
— Rowlatt Act
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Q. Which of the following articles deals with the prohibition of traffic in human beings?
A.
Article 23
B.
Article 24
C.
Article 25
D.
Article 26
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Solution
Article 23 of the Indian Constitution prohibits traffic in human beings and forced labor.
Correct Answer:
A
— Article 23
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Q. Which of the following Articles deals with the protection of life and personal liberty?
A.
Article 21
B.
Article 19
C.
Article 14
D.
Article 22
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Solution
Article 21 of the Constitution deals with the protection of life and personal liberty.
Correct Answer:
A
— Article 21
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Q. Which of the following Articles deals with the Right to Freedom of Religion?
A.
Articles 25-28
B.
Articles 19-22
C.
Articles 14-18
D.
Articles 29-30
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Solution
Articles 25 to 28 of the Constitution deal with the Right to Freedom of Religion, ensuring freedom of conscience and free profession, practice, and propagation of religion.
Correct Answer:
A
— Articles 25-28
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Q. Which of the following articles provides for the protection of the interests of minorities? (2022)
A.
Article 29
B.
Article 30
C.
Both Article 29 and 30
D.
Article 31
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Solution
Both Article 29 and Article 30 provide for the protection of the interests of minorities.
Correct Answer:
C
— Both Article 29 and 30
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Q. Which of the following Articles provides for the Right against Exploitation?
A.
Article 23
B.
Article 24
C.
Article 25
D.
Article 26
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Solution
Article 23 provides for the Right against Exploitation, prohibiting human trafficking and forced labor.
Correct Answer:
A
— Article 23
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Q. Which of the following complex numbers lies on the unit circle?
A.
1 + 0i
B.
0 + 1i
C.
1 + 1i
D.
0 + 0i
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Solution
A complex number z lies on the unit circle if |z| = 1. For z = 1 + 0i, |z| = √(1² + 0²) = 1. For z = 0 + 1i, |z| = √(0² + 1²) = 1. Both 1 + 0i and 0 + 1i lie on the unit circle.
Correct Answer:
A
— 1 + 0i
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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
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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 alcohol?
A.
C2H5OH
B.
C2H4
C.
C2H6
D.
C2H2
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Solution
C2H5OH is ethanol, which is an alcohol.
Correct Answer:
A
— C2H5OH
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Q. Which of the following compounds is an alkali metal? (2023)
A.
Calcium
B.
Sodium
C.
Magnesium
D.
Aluminum
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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
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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 iron reacts with oxygen? (2020)
A.
Iron(II) oxide
B.
Iron(III) oxide
C.
Iron hydroxide
D.
Iron sulfate
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Solution
Iron reacts with oxygen to form Iron(III) oxide (Fe2O3) when sufficient oxygen is present.
Correct Answer:
B
— Iron(III) oxide
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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
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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 compounds is formed when sodium reacts with chlorine? (2021)
A.
Sodium chloride
B.
Sodium oxide
C.
Sodium bicarbonate
D.
Sodium sulfate
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Solution
When sodium reacts with chlorine, sodium chloride (NaCl) is formed.
Correct Answer:
A
— Sodium chloride
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Q. Which of the following countries is landlocked? (2023)
A.
Nepal
B.
Bangladesh
C.
India
D.
Bhutan
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Solution
Nepal is a landlocked country, surrounded by India and China.
Correct Answer:
A
— Nepal
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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
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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 data sets has the highest variance? A: {1, 2, 3}, B: {1, 1, 1}, C: {1, 5, 9}, D: {2, 2, 2}. (2020)
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Solution
Variance of A = 0.67, B = 0, C = 12, D = 0. Thus, C has the highest variance.
Correct Answer:
C
— C
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Q. Which of the following events is associated with the year 1919? (1919)
A.
Jallianwala Bagh Massacre
B.
Civil Disobedience Movement
C.
Dandi March
D.
Formation of Indian National Congress
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Solution
The Jallianwala Bagh Massacre occurred on April 13, 1919.
Correct Answer:
A
— Jallianwala Bagh Massacre
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Q. Which of the following events marked the beginning of the Indian National Congress?
A.
First Round Table Conference
B.
Formation of the Indian National Congress
C.
Quit India Movement
D.
Civil Disobedience Movement
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Solution
The Indian National Congress was formed in 1885, marking the beginning of organized political activity in India.
Correct Answer:
B
— Formation of the Indian National Congress
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Q. Which of the following events marked the end of the Cold War? (1989)
A.
Fall of the Berlin Wall
B.
Vietnam War
C.
Cuban Missile Crisis
D.
Korean War
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Solution
The Fall of the Berlin Wall in 1989 is widely regarded as the event that marked the end of the Cold War.
Correct Answer:
A
— Fall of the Berlin Wall
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Q. Which of the following events occurred first in the Indian Freedom Movement? (1920)
A.
Jallianwala Bagh Massacre
B.
Civil Disobedience Movement
C.
Non-Cooperation Movement
D.
Quit India Movement
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Solution
The Non-Cooperation Movement was launched in 1920, while the Jallianwala Bagh Massacre occurred in 1919.
Correct Answer:
C
— Non-Cooperation Movement
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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
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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 frequencies is considered ultrasonic?
A.
20 Hz
B.
20 kHz
C.
20 MHz
D.
200 Hz
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Solution
Ultrasonic sound refers to frequencies above 20 kHz.
Correct Answer:
B
— 20 kHz
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Q. Which of the following functions is continuous at all points?
A.
f(x) = 1/x
B.
f(x) = x^3
C.
f(x) = sqrt(x)
D.
f(x) = tan(x)
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Solution
f(x) = x^3 is a polynomial function, which is continuous everywhere.
Correct Answer:
B
— f(x) = x^3
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Q. Which of the following functions is continuous at x = 0?
A.
f(x) = 1/x
B.
f(x) = e^x
C.
f(x) = tan(x)
D.
f(x) = 1/(x^2 + 1)
Show solution
Solution
The function f(x) = e^x is continuous everywhere, including at x = 0.
Correct Answer:
B
— f(x) = e^x
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Q. Which of the following functions is continuous on the interval [0, 1]?
A.
f(x) = 1/x
B.
f(x) = x^3
C.
f(x) = sqrt(x)
D.
f(x) = 1/(x-1)
Show solution
Solution
f(x) = x^3 is a polynomial function and is continuous on the interval [0, 1].
Correct Answer:
B
— f(x) = x^3
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