SPSC 25 years Past Papers 2001 to 2025

Get the complete SPSC 25 years Past Papers 2001 to 2025 PDF MCQs for study and exam preparation.

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Q1731: Which one of the following is more energetic?

مندرجہ ذیل میں سے کون سا زیادہ توانائی بخش ہے؟

A. 4s
B. None of these
C. 4f
D. 4d

Q1732: The most suitable temperature for the moderate drying of the solid substance is ______?

ٹھوس مادہ کے اعتدال پسند خشک ہونے کے لئے سب سے موزوں درجہ حرارت ______ ہے؟

A. 220°C
B. None of these
C. 120°C
D. 320°C

Q1733: The major reason that phenol is a better Bronsted acid than cyclohexanol is _____?

فینول سائکلوہیکسنول سے بہتر برونسٹڈ ایسڈ ہے جس کی بڑی وجہ _____ ہے؟

A. The phenyl group is an electron withdrawing group by induction, which stabilizes the action formed in the reaction
B. Phenol is able to stabilize the anion formed in the reaction by resonance
C. None of these
D. It is a better proton donor

Q1734: Why is oxygen-hydrogen absorption of CH3OH such a broad band in the infrared?

A. Rotational energy
B. Hydrogen bonding broadens the absorption
C. Hyperconjugation resonance broadens
D. Resonance broaden the absorption

Q1735: What are hormones?

ہارمونز کیا ہیں؟

A. The bone marrow
B. Secretions of ductless gland
C. Secretions of liver
D. None of these

Q1736: In BH3 molecule H-B-H bond angle is 120°. What kind of hybridization is likely?

A. sp^3 d
B. None of these
C. sp^3
D. sp^2

Q1737: The organic nutrient with the highest calorific value is ______?

سب سے زیادہ کیلوری کی قیمت کے ساتھ نامیاتی غذائی اجزاء ______ ہے؟

A. Protein
B. None of these
C. Sugar
D. Fat

Q1738: Methane is slightly soluble in water due to its ______?

کی وجہ سے میتھین پانی میں قدرے گھلنشیل ہے؟ _____

A. Ionic nature
B. None of these
C. Polar nature
D. Non-polar nature

Q1739: Y = √x-1 is?

A. Even function
B. None of these
C. Explicit function
D. Implicit function

Explanation

A function is explicit if it is solved for $y$ in terms of $x$ , meaning $y$ is expressed directly as a function of $x$ .

Since $Y = sqrt{x} - 1$ is explicitly written in terms of $x$ , it is an explicit function.

Q1740: Which of the following is a good conductor of heat but a bad conductor of electricity?

مندرجہ ذیل میں سے کون سا گرمی کا ایک اچھا موصل لیکن بجلی کا برا کنڈکٹر ہے؟

A. Rubber
B. Celluloid
C. None of these
D. Mica

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