SPSC 25 years Past Papers 2001 to 2025

Q1811: What is 3% of 20?

A. None of these
B. 0.4
C. 0.6
D. 0.7

Explanation

Calculate 3% of 20:

$3 % \times 20 = \frac{3}{100} \times 20 = 0.6$

Q1812: Leibniz's theorem is used to find the nth derivative of ______?

A. None of these
B. Exponential functions only
C. Trigonometric functions only
D. Product of two functions

Explanation

Leibniz’s theorem gives a formula to find the nth derivative of the product of two functions.
It uses the binomial expansion:

\frac{d^{n}}{d x^{n}} (u v) = \sum_{k = 0}^{n} (\binom{n}{k}) \cdot u^{(n - k)} \cdot v^{(k)}

Q1813: Drift velocity of an electron is ______?

الیکٹران کی بہاؤ کی رفتار ______ ہے؟

A. 3 × 10^-8 m/sec
B. None of these
C. 10^-3 m/sec
D. 10^-8 m/sec

Q1814: One electron is moving in an electric and magnetic field. It will gain energy from ______?

ایک الیکٹران بجلی اور مقناطیسی میدان میں آگے بڑھ رہا ہے۔ یہ ______ سے توانائی حاصل کرے گا؟

A. None of these
B. Both of these
C. Electric field
D. Magnetic field

Q1815: Force acting on a charge moving in a magnetic field will not dependupon _____?

مقناطیسی میدان میں منتقل ہونے والے چارج پر کام کرنے والی طاقت کا انحصار _____ نہیں ہوگا؟

A. None of these
B. Its mass
C. Amount of charge
D. Intensity of the magnetic field

Q1816: The amount of work required to stop a moving object is equal to ______?

چلتی شے کو روکنے کے لئے درکار کام کی مقدار ______ کے برابر ہے؟

A. The kinetic energy of the object
B. None of these
C. The mass of the object times its acceleration
D. The velocity of the object

Explanation

Work required to stop an object is equal to the change in its kinetic energy (Work-Energy Theorem).

Since kinetic energy is given by $KE = frac{1}{2} m v^2$ , the work needed to bring the object to rest is equal to its initial kinetic energy.

Q1817: The figure of speech in which two words or phrases of opposite significance are set together for effect is called?

A. None of these
B. Oxymoron
C. Pun
D. Litotes

Q1818: The idiom "go bananas" means?

A. Act crazily
B. Bring bananas
C. None of these
D. Take bananas

Q1819: What is the term for the formation of new word or the use of an existing word with a new meaning?

A. Etymology
B. Neologism
C. None of these
D. Borrowing

Q1820: Identify the correct punctuation: "My favorite colors are red blue and green."

A. My favorite, colors are red, blue and green.
B. My favorite colors are red: blue and green.
C. None of these
D. My favorite colors are red, blue and green.

✅ Correct: 0 | ❌ Wrong: 0 | 📊 Total Attempted: 0

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