SPSC 25 years Past Papers 2001 to 2025

Q1381: Which of the following elements have the highest values of ionization energy?

مندرجہ ذیل میں سے کون سے عناصر میں آئنائزیشن توانائی کی اعلی اقدار ہیں؟

A. Transition elements
B. None of these
C. Inert gases
D. Alkaline earth metals

Q1382: If a, b are positive integers, where in the (modulo 7) with the multiplication operation, then inverse of 3 in the group is?

A. 3
B. 4
C. 5
D. None of these

Q1383: The Synonym of "Obfuscate" is?

A. Blur
B. Reveal
C. None of these
D. Enlighten

Q1384: Area of an equilateral triangle as function of triangle’s side length x will be?

A. √3/4x
B. 1/4x
C. √3/4x^2
D. None of these

Explanation

- The height $h$ of the equilateral triangle is $\frac{\sqrt{3}}{2} x$ .
- Using the area formula for a triangle ( $Area = \frac{1}{2} \times base \times height$ ):
  $A = \frac{1}{2} \times x \times \frac{\sqrt{3}}{2} x = \frac{\sqrt{3}}{4} x^{2}$

Q1385: Pick the correct one: The strike was called to, The strike was called on, The strike was called off, The strike was called in

A. The strike was called on
B. The strike was called off
C. The strike was called in
D. The strike was called to

Q1386: Which of the following property doesn't satisfied by the matrices?

مندرجہ ذیل میں سے کون سی پراپرٹی میٹرکس سے مطمئن نہیں ہے؟

A. Matrix multiplication is commutative
B. Matrix addition is associated
C. Matrix addition is commutative
D. Matrix multiplication is associate

Q1387: Integral f (x^3 + x)^5 (3x^2 + 1)dx will be _____?

A. (x^3 + x)^4/4 + C
B. None of these
C. (x^3 + x)^6/6 + C
D. (x^3 + x)^5/5 + C

Explanation

Substitution Method:
Let $u = x^{3} + x$ . Then, the derivative of $u$ is:
$\frac{d u}{d x} = 3 x^{2} + 1 ⟹ d u = (3 x^{2} + 1) d x$
Rewrite the Integral:
The integral becomes:
$\int u^{5} d u$
Integrate:
$\int u^{5} d u = \frac{u^{6}}{6} + C$
Substitute Back:
Replace $u$ with $x^{3} + x$ :
$\frac{(x^{3} + x)^{6}}{6} + C$

Q1388: The lines which are neither parallel nor do they intersect are called?

A. Symmetric
B. Skew
C. None of these
D. Systematic

Q1389: The Synonym of "Abstruse" is?

A. Concealed
B. None of these
C. Skillful
D. Evident

Q1390: In a balance sheet, the total of common stock and retained earnings are denoted as _____?

بیلنس شیٹ میں ، مشترکہ اسٹاک اور برقرار رکھی ہوئی آمدنی کو _____ کے طور پر بیان کیا گیا ہے؟

A. Common Perpetuity
B. None of these
C. Common Equity
D. Due Equity

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SPSC 25 years Past Papers 2001 to 2025

Q1381: Which of the following elements have the highest values of ionization energy?

Explanation

Q1382: If a, b are positive integers, where in the (modulo 7) with the multiplication operation, then inverse of 3 in the group is?

Explanation

Q1383: The Synonym of "Obfuscate" is?

Explanation

Q1384: Area of an equilateral triangle as function of triangle’s side length x will be?

Explanation

Q1385: Pick the correct one: The strike was called to, The strike was called on, The strike was called off, The strike was called in

Explanation

Q1386: Which of the following property doesn't satisfied by the matrices?

Explanation

Q1387: Integral f (x^3 + x)^5 (3x^2 + 1)dx will be _____?

Explanation

Q1388: The lines which are neither parallel nor do they intersect are called?

Explanation

Q1389: The Synonym of "Abstruse" is?

Explanation

Q1390: In a balance sheet, the total of common stock and retained earnings are denoted as _____?

Explanation

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