STS 05 TO 15 SCREENING TEST 5 YEARS PAST PAPERS
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15 Screening Test 5 years Past Papers Click
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چار آپشن میں سے کسی ایک پر کلک کرنے سے جواب سرخ ہو جائے گا۔
جیسا کہ دوسری اقسام کی عبادت (ابادات) کی طرح ، جماعت کی اہمیت (با جمت نام) کیا ہے؟
- Unity between Muslims
- Financial Ibaadat
- Thinking and understanding
- None of these
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Explanation
Significance of Congregational Prayer (Jama'at):
Unity (Ittihad): Praying together fosters brotherhood, equality (shoulder-to-shoulder rows), and collective discipline among Muslims.
Quranic Emphasis: "Hold firmly to the rope of Allah and do not be divided" (Quran 3:103).
چار امینو ایسڈ سے بنے انووں کے ہائیڈولیسس کے لئے ______ کی ضرورت ہوتی ہے؟
- Two molecules of water
- One molecule of water
- Three molecules of water
- None of these
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Explanation
Peptide Bond Hydrolysis: Each peptide bond (linking two amino acids) requires 1 water molecule to break.
4-Amino Acid Chain: A tetrapeptide has 3 peptide bonds, thus needing 3 water molecules for complete hydrolysis.
Example:
Ala-Gly-Val-Ser (4 amino acids) → Broken into 4 separate amino acids using 3 H₂O molecules.
ارینیئس کے نظریہ کے مطابق ______؟
- Acids are the substances that produce hydroxyl group
- Acids are the substances that produce hydrogen ion
- Acids are electron pair donors
- None of these
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Explanation
The Arrhenius theory (1887) defines:
Acids: Substances that dissociate in water to produce H⁺ ions (protons), such as:
HCl → H⁺ + Cl⁻
Bases: Substances that dissociate in water to produce OH⁻ ions (hydroxide ions), such as:
NaOH → Na⁺ + OH⁻
الیکٹروڈ جو الیکٹرو کیمیکل سیل میں آکسیکرن سے گزرتا ہے وہ _____ ہے؟
- Electrolyte
- Cathode
- Anode
- None of these
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Explanation
Anode: The electrode where oxidation (loss of electrons) occurs.
It releases electrons into the circuit.
Cathode vs. Anode:
Cathode: Reduction (gain of electrons) occurs here.
Anode: Always the site of oxidation in both galvanic (voltaic) and electrolytic cells.
جینیاتی طور پر تبدیل شدہ حیاتیات _______ میں انسانوں کی مدد کرتے ہیں؟
- Reducing crop yield
- Causing genetic mutations
- Increasing food production and resistance to diseases
- None of these
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Explanation
Benefits of GMOs:
Higher Crop Yields: Engineered for drought/pest resistance (e.g., Bt cotton).
Disease Resistance: Vaccines/biotech crops (e.g., virus-resistant papaya).
Nutritional Enhancement: Golden Rice (vitamin A enriched).
حیاتیات بائیوٹیکنالوجی کے شعبے میں اینٹی بائیوٹکس بنانے کے لئے عام طور پر _____ استعمال ہوتے ہیں؟
- Fungi
- Bacteria
- Virus
- None of these
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Explanation
Bacteria, especially the genus Streptomyces, are widely used in biotechnology to produce antibiotics.They naturally produce compounds to inhibit the growth of other microbes, making them ideal for antibiotic production.
پودوں میں ______ کے طور پر کراس پولیشن فائدہ مند ہے؟
- It stops seed germination
- It reduces flower production
- It increases the genetic variety
- None of these
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Explanation
Cross-Pollination Benefit:
- Transfer of pollen between different plants introduces new genetic combinations, enhancing biodiversity and resilience.
- Results in healthier offspring (disease resistance, adaptation to environments).
ایک پودے کا وہ حصہ جس میں بیضوی ہوتا ہے وہ ______ ہے؟
- Stamen
- Ovary
- Sepal
- None of these
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Explanation
The ovary is the female reproductive part of a flower that holds and protects ovules (which develop into seeds after fertilization).
It is part of the pistil (gynoecium) and matures into a fruit after pollination.
سانس کے عمل میں ، کھانا _______ ہے؟
- Broken down to release energy
- Broken down to absorb energy
- Formed in the absence of sunlight
- None of these
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Explanation
In cellular respiration, glucose (food) is broken down in cells (via mitochondria) to produce ATP (energy), CO₂, and water.
Chemical equation: C₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂O + Energy (ATP)
اصطلاح "خط استوا" سے مراد کیا ہے؟
- A line dividing the Earth into Eastern and Western Hemispheres
- A line dividing the Earth into Northern and Southern Hemispheres
- A line marking the Tropic of Cancer and Tropic of Capricorn
- None of these
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Explanation
Definition of Equator:
The equator is an imaginary 0° latitude line, encircling Earth’s midpoint.
It divides the planet into the Northern and Southern Hemispheres.
