Q. What is the average temperature of the Earth in degrees Celsius?
-
A.
15°C
-
B.
20°C
-
C.
25°C
-
D.
30°C
Solution
The average temperature of the Earth is approximately 15°C.
Correct Answer: A — 15°C
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Q. What is the axis of symmetry for the parabola given by the equation y = -3(x - 2)^2 + 5?
-
A.
x = 2
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B.
y = 5
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C.
y = -3
-
D.
x = -2
Solution
The axis of symmetry for a parabola in vertex form y = a(x - h)^2 + k is x = h. Here, h = 2.
Correct Answer: A — x = 2
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Q. What is the balanced equation for the combustion of propane (C3H8)? (2021)
-
A.
C3H8 + 5O2 → 3CO2 + 4H2O
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B.
C3H8 + 4O2 → 3CO2 + 2H2O
-
C.
C3H8 + 3O2 → 3CO + 4H2O
-
D.
C3H8 + 2O2 → 3CO2 + 2H2O
Solution
The balanced equation for the combustion of propane is C3H8 + 5O2 → 3CO2 + 4H2O.
Correct Answer: A — C3H8 + 5O2 → 3CO2 + 4H2O
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Q. What is the capital of India?
-
A.
Mumbai
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B.
New Delhi
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C.
Kolkata
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D.
Chennai
Solution
The capital of India is New Delhi.
Correct Answer: B — New Delhi
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Q. What is the change in internal energy of a system if 500 J of work is done on it and 200 J of heat is lost? (2023)
-
A.
300 J
-
B.
500 J
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C.
700 J
-
D.
900 J
Solution
Change in internal energy (ΔU) = Q - W = -200 J - 500 J = -300 J.
Correct Answer: A — 300 J
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Q. What is the chemical formula for sulfuric acid? (2023)
-
A.
H2SO4
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B.
H2SO3
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C.
H2S
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D.
SO2
Solution
The chemical formula for sulfuric acid is H2SO4, which consists of two hydrogen atoms, one sulfur atom, and four oxygen atoms.
Correct Answer: A — H2SO4
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Q. What is the circumference of a circle with a radius of 7 cm? (2019)
-
A.
14π cm
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B.
21π cm
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C.
7π cm
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D.
28π cm
Solution
Circumference = 2 * π * radius = 2 * π * 7 = 14π cm
Correct Answer: A — 14π cm
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Q. What is the circumradius of a triangle with sides 3 cm, 4 cm, and 5 cm? (2021)
-
A.
2 cm
-
B.
3 cm
-
C.
4 cm
-
D.
5 cm
Solution
For a right triangle, the circumradius R = hypotenuse/2 = 5/2 = 2.5 cm.
Correct Answer: D — 5 cm
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Q. What is the coefficient of x^2 in the expansion of (2x + 5)^4?
-
A.
60
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B.
80
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C.
100
-
D.
120
Solution
Using the binomial theorem, the coefficient of x^2 in (2x + 5)^4 is given by 4C2 * (2)^2 * (5)^2 = 6 * 4 * 25 = 600.
Correct Answer: A — 60
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Q. What is the coefficient of x^2 in the expansion of (2x - 5)^5? (2019)
-
A.
-300
-
B.
-600
-
C.
600
-
D.
300
Solution
The coefficient of x^2 in (2x - 5)^5 is given by 5C2 * (2)^2 * (-5)^3 = 10 * 4 * (-125) = -5000.
Correct Answer: B — -600
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Q. What is the coefficient of x^3 in the expansion of (3x + 2)^5? (2023)
-
A.
90
-
B.
180
-
C.
270
-
D.
360
Solution
The coefficient of x^3 in (3x + 2)^5 is given by 5C3 * (3)^3 * (2)^2 = 10 * 27 * 4 = 1080.
Correct Answer: B — 180
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Q. What is the conjugate base of sulfuric acid (H2SO4)?
-
A.
HSO4-
-
B.
SO4^2-
-
C.
H3O+
-
D.
None of the above
Solution
The conjugate base of sulfuric acid (H2SO4) is HSO4-.
Correct Answer: B — SO4^2-
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Q. What is the critical angle for light traveling from glass (n = 1.5) to air (n = 1)? (2019)
-
A.
30 degrees
-
B.
41.8 degrees
-
C.
48.6 degrees
-
D.
60 degrees
Solution
Using the formula sin(c) = n2/n1, we find sin(c) = 1/1.5, thus c = sin^(-1)(2/3) ≈ 41.8 degrees.
Correct Answer: B — 41.8 degrees
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Q. What is the critical point of f(x) = x^2 - 4x + 4? (2022)
Solution
Set f'(x) = 2x - 4 = 0; solving gives x = 2.
Correct Answer: B — 2
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Q. What is the critical point of the function f(x) = x^2 - 4x + 4? (2022)
Solution
Find f'(x) = 2x - 4. Set f'(x) = 0, giving 2x - 4 = 0, hence x = 2.
Correct Answer: B — 2
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Q. What is the current account deficit of India as a percentage of GDP in 2023? (2023)
-
A.
1.2%
-
B.
2.5%
-
C.
3.1%
-
D.
4.0%
Solution
India's current account deficit is estimated to be around 2.5% of GDP in 2023.
Correct Answer: B — 2.5%
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Q. What is the current exchange rate of 1 USD to INR as of 2023? (2023)
-
A.
72 INR
-
B.
75 INR
-
C.
78 INR
-
D.
80 INR
Solution
As of 2023, the exchange rate is approximately 78 INR for 1 USD.
Correct Answer: C — 78 INR
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Q. What is the current inflation rate in India as of 2023? (2023)
-
A.
3.5%
-
B.
5.0%
-
C.
6.5%
-
D.
7.2%
Solution
As of 2023, the inflation rate in India is reported to be around 6.5%.
Correct Answer: C — 6.5%
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Q. What is the current literacy rate in India as of 2023? (2023)
-
A.
74%
-
B.
76%
-
C.
78%
-
D.
80%
Solution
The literacy rate in India is reported to be around 78% as of 2023.
Correct Answer: C — 78%
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Q. What is the current unemployment rate in India as of 2023? (2023)
-
A.
4.5%
-
B.
5.8%
-
C.
6.5%
-
D.
7.2%
Solution
The unemployment rate in India is reported to be around 5.8% as of 2023.
Correct Answer: B — 5.8%
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Q. What is the decibel level of a sound that is 10 times more intense than the reference level of 0 dB?
-
A.
10 dB
-
B.
20 dB
-
C.
30 dB
-
D.
40 dB
Solution
A sound that is 10 times more intense than the reference level is 10 dB.
Correct Answer: A — 10 dB
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Q. What is the derivative of f(x) = 3x^4 - 5x^2 + 2? (2021)
-
A.
12x^3 - 10x
-
B.
12x^3 - 5
-
C.
6x^3 - 5x
-
D.
3x^3 - 5
Solution
Using the power rule, f'(x) = 12x^3 - 10x.
Correct Answer: A — 12x^3 - 10x
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Q. What is the derivative of f(x) = 5x^5 - 3x + 7? (2020)
-
A.
25x^4 - 3
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B.
15x^4 - 3
-
C.
5x^4 - 3
-
D.
20x^4 - 3
Solution
Using the power rule, f'(x) = 25x^4 - 3.
Correct Answer: A — 25x^4 - 3
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Q. What is the derivative of f(x) = ln(x)? (2019)
-
A.
1/x
-
B.
x
-
C.
e^x
-
D.
x^2
Solution
The derivative f'(x) = d/dx(ln(x)) = 1/x.
Correct Answer: A — 1/x
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Q. What is the derivative of f(x) = x^2 * sin(x)? (2023)
-
A.
2x * sin(x) + x^2 * cos(x)
-
B.
2x * cos(x) + x^2 * sin(x)
-
C.
2x * sin(x) - x^2 * cos(x)
-
D.
x^2 * sin(x) + 2x * cos(x)
Solution
Using the product rule, f'(x) = 2x * sin(x) + x^2 * cos(x).
Correct Answer: A — 2x * sin(x) + x^2 * cos(x)
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Q. What is the derivative of f(x) = x^3 * ln(x)? (2023)
-
A.
3x^2 * ln(x) + x^2
-
B.
3x^2 * ln(x) + x^3/x
-
C.
3x^2 * ln(x) + 3x^2
-
D.
3x^2 * ln(x) + 1
Solution
Using the product rule, f'(x) = 3x^2 * ln(x) + x^2.
Correct Answer: A — 3x^2 * ln(x) + x^2
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Q. What is the derivative of the function f(x) = 3x^2 + 5x - 7? (2021)
-
A.
3x + 5
-
B.
6x + 5
-
C.
6x - 5
-
D.
3x^2 + 5
Solution
The derivative f'(x) = d/dx(3x^2 + 5x - 7) = 6x + 5.
Correct Answer: B — 6x + 5
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Q. What is the determinant of a 2x2 matrix A = [[a, b], [c, d]]? (2021)
-
A.
ad - bc
-
B.
ab + cd
-
C.
ac + bd
-
D.
ad + bc
Solution
The determinant of a 2x2 matrix is calculated as ad - bc.
Correct Answer: A — ad - bc
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Q. What is the distance between the points (0, 0) and (3, 4)?
Solution
Using the distance formula: d = √[(3 - 0)² + (4 - 0)²] = √[9 + 16] = √25 = 5.
Correct Answer: A — 5
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Q. What is the distance between the points (3, 7) and (3, 1)?
Solution
Using the distance formula: d = √[(3 - 3)² + (1 - 7)²] = √[0 + 36] = √36 = 6.
Correct Answer: A — 6
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