جب آواز ایک میڈیم سے دوسرے میڈیم میں داخل ہوتی ہے تو کیا تبدیل نہیں ہوتا؟
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A. None of these
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B. Speed
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C. Wavelength
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D. Frequency
Explanation
- When sound travels from one medium to another, speed and wavelength change due to the change in the medium's properties.
- Frequency remains constant because it is determined by the source of the sound, not the medium.
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A. Accomplice
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B. Friend
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C. None of these
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D. Operator
Explanation
- "Accomplice" refers to someone who helps another person in committing a crime or conspiracy.
- Accomplice means ساتھی
- It is the most fitting term for someone involved in a conspiracy.
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A. None of these
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B. A mutation in DNA
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C. A gene variant at a specific locus
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D. A trait that is expressed
Explanation
- An allele is a different version of a gene found at the same locus (position) on homologous chromosomes.
- Alleles determine variations in traits, such as eye color or blood type.
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A. Butane
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B. Trans-butane
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C. 2-butane
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D. None of these
Explanation
Hydrogenation is the process of adding hydrogen (H₂) to a compound in the presence of a catalyst (like Ni, Pt, or Pd).
When cis-2-butene undergoes hydrogenation, it gets fully saturated, converting into butane (C₄H₁₀).
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A. Cat
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B. Bear
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C. None of these
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D. Cow
Explanation
- Lions roar, while bears growl.
- Cats meow, Cows moo, and Elephants trumpet.
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A. Potential difference
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B. Current
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C. Concentration
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D. None of these
Explanation
- In voltammetry, the potential difference (voltage) is controlled and varied while measuring the resulting current.
- This technique helps analyze redox reactions and detect specific ions or compounds in a solution.
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A. To, on
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B. None of these
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C. With, at
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D. With, on
Explanation
- My results will lead to future research on the topic.
- میرے نتائج اس موضوع پر مستقبل کی تحقیق کا باعث بنے گا۔
- "Lead to" is the correct phrase meaning to cause or result in something.
- "Research on" is used to specify the topic being studied.
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A. To destroy before it
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B. To confess fully
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C. To praise oneself
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D. None of these
Explanation
- To make a clean breast of means to admit or confess something honestly and completely.
- It is often used when someone reveals a truth they were hiding.
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A. Self-trust
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B. Self-expression
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C. None of these
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D. Imitation and conformity
Explanation
- In Self-Reliance, Emerson emphasizes individualism and original thought, rejecting imitation and societal conformity.
- He argues that people should trust their own instincts and avoid blindly following others.
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A. In
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B. For
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C. To
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D. None of these
Explanation
- "Knack for" is the correct phrase, meaning a natural skill or talent in something.
- Example: She has a knack for painting beautiful landscapes.
