افقی محوروں پر دو یکساں دائرے محو ہیں جو ان کی سطحوں پر ٹینجینٹ ہیں۔ ایک طویل مدت کے ساتھ ایک ہے جس میں _______ ہے؟
A. The larger rotational inertia
B. The larger radius
C. None of these
D. The smaller mass
Explanation
The period of a physical pendulum depends on the rotational inertia and the distance from the pivot. A larger radius increases the moment of inertia, leading to a longer period of oscillation. Show/Hide Explanation
لینز کا قانون _____ کی وضاحت کرسکتا ہے؟
A. Only two of the three types of magnetism
B. None of these
C. Ferromagnetism only
D. Diamagnetism only
Explanation
Lenz's Law states that an induced current opposes the change in magnetic flux , which aligns with diamagnetism , where materials create an opposing magnetic field. Paramagnetic and ferromagnetic materials align with the external field , not opposing it , so Lenz's Law does not explain them. Show/Hide Explanation
A. None of these
B. 11%
C. 7%
D. 8%
Explanation
Uncertainty propagation in multiplication/division follows the rule:Δ P P = 2 × Δ V V + Δ R R Given uncertainty in V = e% and uncertainty in R = 2% , Total uncertainty = 2 ( e ) + 2 = 8 % text{Total uncertainty} = 2(e) + 2 = 8% (assuming e = 3%)
Show/Hide Explanation
A. Away
B. Off
C. Out
D. None of these
Explanation
" Walked out " means leaving a place , especially in disappointment or protest . In this context, " walked out before it ended " correctly conveys leaving the movie early due to boredom. Show/Hide Explanation
A. None of these
B. Hydroxyl group
C. Carbonyl group
D. Benzene ring
Explanation
Phenols contain a hydroxyl (-OH) group attached to a benzene ring . They do not have a carbonyl group (C=O) , which is found in aldehydes , ketones, and carboxylic acids. Show/Hide Explanation
ارین بنیادی طور پر _____ سے گزرتا ہے؟
A. None of these
B. Elimination
C. Addition
D. Substitution
Explanation
Arenes (aromatic compounds) predominantly undergo electrophilic substitution reactions. This is because addition reactions would disrupt the stable aromaticity of the benzene ring. Show/Hide Explanation
A. None of these
B. ACTION : VERBAL
C. TEACHER : RICH
D. IDLER : LAZY
Explanation
A Zealot is someone who is extremely enthusiastic . Similarly, an Idler is someone who is lazy . The relationship is between a person and their defining characteristic. Show/Hide Explanation
مندرجہ ذیل میں سے کون گیس کرومیٹوگرافی کا پتہ لگانے والا نہیں ہوسکتا؟
A. None of these
B. TCD
C. FID
D. DAD
Explanation
DAD (Diode Array Detector) is used in liquid chromatography (HPLC), not gas chromatography. FID (Flame Ionization Detector), TCD (Thermal Conductivity Detector), and MS (Mass Spectrometry) are all common GC detectors. Show/Hide Explanation
A. None of these
B. Pidgin
C. Jargon
D. Parole
Explanation
Pidgin is a simplified language that develops between groups who do not share a common language, often for trade or communication. It has limited vocabulary and grammar , usually borrowing from multiple languages without native speakers. Show/Hide Explanation
A. Verb
B. None of these
C. Adverb
D. Noun
Explanation
Quickly describes how she ran, modifying the verb " ran " , which makes it an adverb . Adverbs often describe manner, time, place, or degree. Show/Hide Explanation
