Q. Which of the following is a major greenhouse gas? (2023)
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A.
Oxygen
-
B.
Nitrogen
-
C.
Carbon Dioxide
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D.
Hydrogen
Solution
Carbon Dioxide is a major greenhouse gas that contributes to global warming and climate change.
Correct Answer: C — Carbon Dioxide
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Q. Which of the following is a perfect square?
Solution
25 is a perfect square as it is equal to 5 × 5.
Correct Answer: C — 25
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Q. Which of the following is a property of non-metals?
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A.
Good conductors of heat
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B.
Malleable
-
C.
Brittle
-
D.
Ductile
Solution
Non-metals are generally brittle in solid form and do not exhibit malleability or ductility.
Correct Answer: C — Brittle
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Q. Which of the following is a redox reaction? (2019)
-
A.
2H2 + O2 → 2H2O
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B.
NaCl → Na + Cl2
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C.
H2 + Cl2 → 2HCl
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D.
CaCO3 → CaO + CO2
Solution
In the reaction 2H2 + O2 → 2H2O, hydrogen is oxidized and oxygen is reduced, making it a redox reaction.
Correct Answer: A — 2H2 + O2 → 2H2O
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Q. Which of the following is a square matrix? (2020)
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A.
2x3
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B.
3x3
-
C.
4x2
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D.
5x1
Solution
A square matrix is one where the number of rows is equal to the number of columns. Among the options, only 3x3 has equal rows and columns.
Correct Answer: B — 3x3
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Q. Which of the following is an example of a physical change? (2019)
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A.
Burning wood
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B.
Dissolving sugar in water
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C.
Rusting iron
-
D.
Cooking an egg
Solution
Dissolving sugar in water is a physical change because it can be reversed by evaporation.
Correct Answer: B — Dissolving sugar in water
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Q. Which of the following is an identity matrix? (2019)
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A.
[[1, 0], [0, 1]]
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B.
[[1, 1], [1, 1]]
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C.
[[0, 1], [1, 0]]
-
D.
[[2, 0], [0, 2]]
Solution
An identity matrix is a square matrix with ones on the diagonal and zeros elsewhere. The matrix [[1, 0], [0, 1]] fits this definition.
Correct Answer: A — [[1, 0], [0, 1]]
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Q. Which of the following is an irrational number?
Solution
√4 = 2, 0.25 = 1/4, and 1 is rational. √2 is irrational.
Correct Answer: B — √2
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Q. Which of the following is equal to log_10(0.01)? (2019)
Solution
log_10(0.01) = log_10(10^-2) = -2.
Correct Answer: B — -2
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Q. Which of the following is equivalent to log_2(32)?
Solution
log_2(32) = log_2(2^5) = 5.
Correct Answer: B — 5
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Q. Which of the following is NOT a characteristic of the Earth's outer core? (2023)
-
A.
Liquid state
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B.
Composed of iron and nickel
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C.
Responsible for magnetic field
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D.
Solid state
Solution
The outer core is in a liquid state, not solid, and is responsible for generating the Earth's magnetic field.
Correct Answer: D — Solid state
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Q. Which of the following is NOT a function of the smooth endoplasmic reticulum?
-
A.
Lipid synthesis
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B.
Detoxification of drugs
-
C.
Protein synthesis
-
D.
Calcium ion storage
Solution
The smooth endoplasmic reticulum is involved in lipid synthesis, detoxification, and calcium storage, but not protein synthesis.
Correct Answer: C — Protein synthesis
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Q. Which of the following is NOT a Fundamental Duty under Article 51A?
-
A.
To promote harmony
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B.
To safeguard public property
-
C.
To pay taxes
-
D.
To protect the environment
Solution
Paying taxes is a legal obligation but is not listed as a Fundamental Duty under Article 51A of the Constitution.
Correct Answer: C — To pay taxes
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Q. Which of the following is NOT a fundamental right under the Indian Constitution?
-
A.
Right to Equality
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B.
Right to Freedom
-
C.
Right to Property
-
D.
Right against Exploitation
Solution
The Right to Property was removed from the list of Fundamental Rights and is now a legal right under Article 300A.
Correct Answer: C — Right to Property
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Q. Which of the following is NOT a Fundamental Right? (2019)
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A.
Right to Education
-
B.
Right to Work
-
C.
Right to Privacy
-
D.
Right to Freedom of Speech
Solution
The Right to Work is not explicitly mentioned as a Fundamental Right in the Constitution.
Correct Answer: B — Right to Work
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Q. Which of the following is NOT a macromolecule? (2021)
-
A.
Proteins
-
B.
Carbohydrates
-
C.
Lipids
-
D.
Water
Solution
Water is a small molecule and not classified as a macromolecule, while proteins, carbohydrates, and lipids are.
Correct Answer: D — Water
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Q. Which of the following is NOT a reason for the existence of time zones? (2019)
-
A.
Earth's rotation
-
B.
Political boundaries
-
C.
Latitude differences
-
D.
Geographical features
Solution
Time zones are primarily based on longitude and the Earth's rotation, not latitude differences.
Correct Answer: C — Latitude differences
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Q. Which of the following is the correct expansion of (x - y)³?
-
A.
x³ - 3x²y + 3xy² - y³
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B.
x³ - y³
-
C.
x³ - 3xy² + 3x²y - y³
-
D.
3x²y - 3xy²
Solution
(x - y)³ = x³ - 3x²y + 3xy² - y³ by the binomial theorem.
Correct Answer: A — x³ - 3x²y + 3xy² - y³
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Q. Which of the following is the correct identity for (x + y)³?
-
A.
x³ + y³ + 3xy(x + y)
-
B.
x³ + y³ - 3xy(x + y)
-
C.
x³ + y³ + 3xy²
-
D.
x³ - y³
Solution
(x + y)³ = x³ + y³ + 3xy(x + y) by the binomial expansion.
Correct Answer: A — x³ + y³ + 3xy(x + y)
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Q. Which of the following is the largest desert in the world?
-
A.
Sahara Desert
-
B.
Arabian Desert
-
C.
Gobi Desert
-
D.
Antarctic Desert
Solution
The Antarctic Desert is the largest desert in the world, covering about 14 million square kilometers.
Correct Answer: D — Antarctic Desert
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Q. Which of the following is the largest prime number less than 20?
Solution
The largest prime number less than 20 is 19.
Correct Answer: B — 19
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Q. Which of the following is the longest river in India?
-
A.
Godavari
-
B.
Ganges
-
C.
Brahmaputra
-
D.
Yamuna
Solution
The Brahmaputra is the longest river in India, flowing for about 2,900 kilometers.
Correct Answer: C — Brahmaputra
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Q. Which of the following is the next number in the sequence: 2, 4, 8, 16, ...?
Solution
The sequence is a geometric progression where each term is multiplied by 2. The next number is 16 * 2 = 32.
Correct Answer: C — 32
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Q. Which of the following is the outermost layer of the Earth? (2022)
-
A.
Mantle
-
B.
Crust
-
C.
Outer Core
-
D.
Inner Core
Solution
The Crust is the outermost layer of the Earth, lying above the mantle.
Correct Answer: B — Crust
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Q. Which of the following is the smallest Union Territory of India by area?
-
A.
Chandigarh
-
B.
Lakshadweep
-
C.
Dadra and Nagar Haveli
-
D.
Delhi
Solution
Lakshadweep is the smallest Union Territory of India by area.
Correct Answer: B — Lakshadweep
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Q. Which of the following is true for log_a(bc)?
-
A.
log_a(b) + log_a(c)
-
B.
log_a(b) - log_a(c)
-
C.
log_a(bc) = log_a(b) * log_a(c)
-
D.
None of the above
Solution
log_a(bc) = log_a(b) + log_a(c) by the product rule of logarithms.
Correct Answer: A — log_a(b) + log_a(c)
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Q. Which of the following layers is liquid? (2019)
-
A.
Crust
-
B.
Mantle
-
C.
Outer Core
-
D.
Inner Core
Solution
The Outer Core is the only layer that is liquid, composed mainly of molten iron and nickel.
Correct Answer: C — Outer Core
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Q. Which of the following layers is the hottest part of the Earth? (2022)
-
A.
Crust
-
B.
Mantle
-
C.
Outer Core
-
D.
Inner Core
Solution
The Inner Core is the hottest part of the Earth, with temperatures reaching up to 5,700 degrees Celsius.
Correct Answer: D — Inner Core
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Q. Which of the following leaders was associated with the Civil Disobedience Movement? (1930)
-
A.
Jawaharlal Nehru
-
B.
Mahatma Gandhi
-
C.
Subhas Chandra Bose
-
D.
Sardar Vallabhbhai Patel
Solution
Mahatma Gandhi was the key leader associated with the Civil Disobedience Movement, which started in 1930.
Correct Answer: B — Mahatma Gandhi
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Q. Which of the following longitudes is closest to the International Date Line?
-
A.
150°E
-
B.
180°
-
C.
150°W
-
D.
120°W
Solution
The International Date Line is at 180°, so the closest longitude is 180°.
Correct Answer: B — 180°
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