مختصر اسٹاپ پر ایک لائن ڈرائیو اسی اونچائی پر پکڑی گئی تھی جیسا کہ یہ اصل میں مارا گیا تھا۔ اس کی پوری پرواز کے دوران کشش ثقل کے ذریعہ کیا گیا ہے اور ہوا کے خلاف مزاحمت کے ذریعہ بالترتیب کام کیا گیا ہے _____؟
A. None of these
B. Positive; negative
C. Zero; negative
D. Zero; positive
Explanation
The work done by gravity is zero because gravity is a conservative force, and the ball returns to the same height where it started. The work done by air resistance is negative because it always opposes the motion, reducing the ball’s kinetic energy. Show/Hide Explanation
A. Variance
B. None of these
C. Inconsistency
D. Harmony
Explanation
Discrepancy means تضاد
Harmony means ہم آہنگی
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A. None of these
B. Scientists
C. Interested about
D. Emanating
Explanation
The correct phrase is " interested in " , not " interested about " . " Interested in " is the proper preposition usage when expressing curiosity or concern. Show/Hide Explanation
A. π/3
B. π/3
C. None of these
D. 2π/3
Explanation
The standard period of cos(x) is 2π. For cos(3x + 5), the period is given by:
Period = 2π / |coefficient of x|
= 2π / 3
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A. Pluralism
B. Panacea
C. Plagiarism
D. None of these
Explanation
Plagiarism is the act of using someone else's work, ideas, or writing without proper credit. It is considered unethical and can lead to serious consequences in academics and publishing. Show/Hide Explanation
A. None of these
B. Singer
C. Composer
D. Musician
Explanation
A book is created by an author . Just as a symphony is created by a composer . The composer writes and arranges musical pieces , similar to how an author writes a book . Show/Hide Explanation
نامیاتی اضافے کا رد عمل نہیں ہے۔ ______
A. None of these
B. Dehydration
C. Hydration
D. Halogenation
Explanation
Dehydration is an elimination reaction , not an addition reaction , as it involves the removal of a water molecule. Hydration, Halogenation, and Hydrohalogenation are all addition reactions , where atoms or groups are added to a molecule. Show/Hide Explanation
A. It's not important
B. It doesn't matter
C. None of these
D. It can change a person's life
Explanation
Pygmalion highlights how education and language can transform an individual's social status and opportunities. The play illustrates this through Eliza Doolittle , who undergoes a dramatic change in speech and manners due to Professor Higgins' training. Show/Hide Explanation
A. Language blending
B. Convergence
C. None of these
D. Language contact
Explanation
Convergence occurs when two languages interact closely and develop shared linguistic features. This happens due to prolonged contact between speakers of different languages. Show/Hide Explanation
A. x ≥ -2
B. None of these
C. x > - 2
D. x > 4
Explanation
Since ln(x + 3) ≥ 0, we have:
x + 3 ≥ 1 (since ln(u) ≥ 0 when u ≥ 1)
x ≥ -2
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