Board Of Intermediate Education Karachi

Board Of Intermediate Education Karachi

5/19/2025, 2:26:20 PM

Board of Intermediate Education Karachi Class XII Physics – Midnight Guess Paper – Section C (Long Questions) 1. Ampere’s Law: State Ampere’s Law. Derive the expression for magnetic field inside a solenoid or a toroid. 2. Compton Effect & Photoelectric Effect: Define Compton Effect and derive the expression for Compton shift in wavelength. OR Define Photoelectric Effect, explain experimental results, OR derive Einstein’s Photoelectric Equation. 3. Moving Coil Galvanometer: Describe the construction and working of a moving coil galvanometer. Prove that deflection is proportional to current. 4. First Law of Thermodynamics: State and explain the First Law of Thermodynamics. Explain the following processes: Isobaric Isothermal Adiabatic Isochoric Prove that: CP - CV = R 5. Special Theory of Relativity & AC Generator: Explain the Special Theory of Relativity. Describe the construction and working of an AC Generator. Derive the EMF equation. 6. Faraday’s Law OR Carnot Engine: State Faraday’s Law of Electromagnetic Induction. Derive the expressions for self-induction and mutual induction. Explain construction and working of a Transformer. OR Define Carnot Engine, describe its construction and working, derive its efficiency formula, and draw the Carnot cycle graph.

Board Of Intermediate Education Karachi

5/19/2025, 2:44:34 PM

Board of Intermediate Education Karachi Xii Physics Midnight Section B Short 1. Derive on the basis of kinetic molecular theory. 2. Derive e/m ratio of an electron by J.J. Thomson experiment. 3. Prove that average translational kinetic energy of ideal gas molecule is directly proportional to its absolute temperature. 4. Explain the difference between isothermal and adiabatic processes. 5. Write down the two statements of second law of thermodynamics and prove their equivalence. 6. State Faraday's Law, Lenz's Law and Curie's Law, Boyle's Law on basis of KMT. 7. Explain resonance in RLC circuit OR Define transistor and explain its use as a switch and amplifier. 8. Define: entropy, ammeter, voltmeter, self-induction, mutual induction, Young's modulus, bulk modulus, impedance, diode and its biasing, rectifier with types. 9. Define: logic gates AND and OR with truth tables, inertial and non-inertial frames of reference, nuclear fission and explain chain reaction control. 10. Write note on: photoelectric effect, laser, law of radioactive decay and its half-life, conversion of galvanometer into ammeter and voltmeter.

Board Of Intermediate Education Karachi

5/20/2025, 12:18:12 PM

*Board of Intermediate Education Karachi* *Zoology Part 1 Target Papers* *Examination 2025* Q2 b) Non-Reasoning Questions: 1. Differentiate between hemoglobin and myoglobin OR Define competitive and non-competitive inhibition. 2. Draw the structure of starch and describe its iodine test result. OR Explain vasodilation and vasoconstriction. 3. Distinguish between saturated and unsaturated acylglycerols OR Describe fundamental chordate characteristics. 4. Explain the lock-and-key model of enzyme action. OR Write a note on fever or inflammation. 5. Differentiate between RNA and DNA OR State the role of respiratory pigments. 6. Name and describe the cell types in sponges. OR Write a note on hemoglobin or ECG. 7. State the economic importance of Cnidaria OR Differentiate cartilaginous and bony fish. 8. Give two biological roles of water OR List structural proteins with examples. Section C (Detailed-Answer Questions) Note: Answer any two questions. All questions carry equal marks. Q3: Define biological molecules. Explain the composition, types, structure, and functions of: Carbohydrates OR Proteins OR Lipids. OR Explain phagocytosis and cytotoxicity in the second line of defense. Differentiate NK cells and TC cells. Q4: Describe the characteristics, adaptations, and economic importance of: Arthropoda OR Annelida OR Mollusca. OR Give general features of Mammalia/Aves with examples. Q5: What is a nucleotide? How does it form DNA? Explain DNA structure and gene expression. OR Define immunity. Discuss innate or adaptive immunity in detail. Q6: Draw and explain the human respiratory system with a labelled diagram. OR Describe the structure of the human heart with a diagram.

Board Of Intermediate Education Karachi

5/18/2025, 2:15:14 PM

*اعلیٰ ثانوی تعلیمی بورڈ کراچی* *انٹرمیڈیٹ سال اول (کلاس XI) - اردو کا اندازہ جاتی پرچہ (Guess Paper) 2025* 1. مندرجہ ذیل میں سے کسی دو کی تشریح شاعر کے حوالے سے کیجئے: خواجہ میر درد غزل 2 احمد فراز مرزا اسد اللہ خان غالب غزل نمبر 2 2. منتخب کردہ اقتباس کے مصنف اور سبق کا نام تحریر کریں۔ 3. نظم کی خصوصیات تحریر کریں: ہم کون ہیں گویا موسموں کی تبدیلی کونسل کا اتفاق 4. افسانہ نگار کا تعارف اور افسانے کا خلاصہ تحریر کریں: بیگم کا بیٹا بیگم کی بلی خواہشمندوں کا لاؤنج فرشتہ کا روزہ زہریلا خربوزہ Section C 5. درج ذیل میں سے کسی ایک شاعر کے کلام کی خصوصیات بیان کیجئے: مرزا غالب حسرت موہانی جگر مراد آبادی جوش ملیح آبادی حفیظ جالندھری 6. درج ذیل میں سے کسی نثر نگار کی طرزِ تحریر کی خصوصیات لکھیے خواجہ حسن نظامی سیرت النبی بزم چند سید احمد خان 7. مضمون نویسی (ان میں سے کسی ایک پر) سوشل میڈیا کے فوائد و نقصانات سیر و تفریح کی اہم ضرورت قومی اتفاق اتحاد ایک ناقابل فراموش واقعہ

Board Of Intermediate Education Karachi

5/19/2025, 7:39:14 PM

*بورڈ آف انٹرمیڈیٹ ایجوکیشن کراچی* مطالعہ پاکستان – جماعت دوازدہم (XII) حصہ "ب" (مختصر جواب کے سوالات) 1. نظریۂ پاکستان یا دو قومی نظریہ کی وضاحت کریں۔ جنوبی ایشیا کے چار صوفی بزرگ لکھیں۔ 2. سندھ طاس معاہدہ کیا ہے؟ پاکستان کے دو اہم قدرتی وسائل لکھیں۔ 3. پاکستان کی جغرافیائی محلِ وقوع / شمالی پہاڑی علاقوں کی اہمیت بیان کریں۔ 4. پاکستان کی معیشت میں صنعت یا زراعت کی اہمیت بیان کریں۔ پاکستان کے 1973ء کے آئین کی چار اسلامی دفعات لکھیں۔ 5. ہمارا اعلیٰ عدلیہ کس طرح شہریوں کے بنیادی حقوق کا تحفظ کرتی ہے؟ جنوبی ایشیا پر اسلام کے سماجی اثرات بیان کریں۔ 6. 3 جون 1947ء کا منصوبہ بیان کریں۔ یا کسی ایک علاقائی زبان کی اہمیت لکھیں۔ 7. UNO کے کسی بھی چار اراکین کے نام لکھیں۔ یا قومی ریاست کے عناصر بیان کریں۔ 8. وادیٔ سندھ کی تہذیب پر نوٹ لکھیں۔ لکھنؤ معاہدہ کے چار نکات بیان کریں *حصہ "ج" (تفصیلی جواب کے سوالات)* 3. پاکستان کے اغراض و مقاصد لکھیں۔ یا پاکستان کے ابتدائی مسائل بیان کریں۔ 4. قومی یکجہتی میں اردو کی اہمیت کا کردار بیان کریں۔ یا پاکستانی ثقافت کی نمایاں خصوصیات بیان کریں۔ 5. پاکستان کی خارجہ پالیسی کے بنیادی اصولوں کی وضاحت کریں۔ تحریکِ پاکستان میں 1940ء سے 1947ء تک کے اہم سیاسی واقعات بیان کریں۔

Board Of Intermediate Education Karachi

5/20/2025, 12:17:42 PM

*Board of Intermediate Education Karachi* *Zoology Part 1 Target Papers* *Examination 2025* Section B (Short-Answer Questions) Reasoning Questions: 1. Why are water molecules called amphoteric in nature? OR Why is antipyretic therapy used? 2. Why is the SA node called the pacemaker of the heart? OR Why do monosaccharides taste sweet while polysaccharides do not? 3. Why does blood flow faster in arteries? OR How does pH affect enzyme activity? 4. How are echinoderms related to chordates? OR Why is the left ventricle the thickest heart chamber? 5. Why is air a better respiratory medium than water? OR Why do capillaries have a single endothelial layer? 6. Why is blood pressure higher in arteries than in veins? OR Why is chitin stronger than cellulose? 7. How does the stomach protect itself from HCl? OR Why do fats provide more energy than carbohydrates? 8. Why are flatworms so called? OR Why does ice float on water?

Board Of Intermediate Education Karachi

5/22/2025, 7:28:21 AM

*تعلیمی اعلان* *محکمہ تعلیم سندھ نے صوبے بھر کے تمام اسکولز اور کالجز میں موسم گرما کی تعطیلات کا باقاعدہ اعلان کر دیا ہے* *1 جون 2025 سے 31 جولائی 2025 تک بند رہیں گے طلبہ و طالبات گرمیوں کی چھٹیوں سے لطف اندوز ہوں اور آئندہ تعلیمی سال کی تیاری کریں* https://www.instagram.com/inter_board_karachi

Board Of Intermediate Education Karachi

5/21/2025, 12:26:41 PM

Board of Intermediate Education Karachi Target Paper for 2025 (According to Reduced Syllabus) Class: XI – Mathematics (New Book) Section: B–C Chapter 1 Ex 1.1 Q2 Q4 (IV–VII): 5;6;(ii;vi;vii viii);7;8;9 Ex 1.2 Q5;6;7 (I);8 (VI–VII) Ex 1.3 Q1;2;3 Example: Page 17, 19, 21 Chapter 2 Ex 2.1 7 (ii;iii);8;11 Ex 2.2 Q3;4;5;6 (ii) Ex 2.3 Q3 (ii;iv) Q4 (IV) Q6 (II–III) Ex 2.4 Q1;2;3;4;5 Ex 2.5 Q3;4 Ex 2.6 Q3;4;5;6 Example: Pg 68, Pg 66, Pg 65 Chapter 3 Ex 3.1 Q1–Q2–Q3; Q8;14 Ex 3.4 Q3;6;7;8;9;10;11 Ex 3.5 Q3;4;5;6;8;9;10 Ex 3.6 Q3;4;5;6 Chapter 4 Ex 4.1 Q4 Q5;6 Ex 4.2 Q3;6;7;9;11;13 Example: #5;6 Ex 4.3 Q2;3;6;7 Ex 4.4 Q3;5;8;9;10;11;12 Ex 4.5 Q2;3;5;6;7 Ex 4.6 Q2; (ii;iii;vi);3;4;6;7 Ex 4.7 Q1 (iv;v;vi;vii);5;6;7 Ex 4.8 Q2;3;4;5 Ex 4.9 Q2;4;5;6;7;8;9 Chapter 5 Ex 5.1 Q3;7;10;11;12 Ex 5.2 Q1;3;4;6 Ex 5.3 Q1;4;5;6 Ex 5.4 Q1;3;6;7;8 Chapter 6 Ex 6.1 Q2;4;6;8;10;11;14;16;18;19 Ex 6.3 Q3;5;6;8;9;11 Ex 6.4 Q3;4;7;8;9;10;11;13;15;16;17;18 Rev. Ex 6.6 Q4;6;7 Chapter 7 Ex 7.1 Q2;3;4;7;8;10;2;3 (ii) Example: #6 Ex 7.2 Q4;5;6;7;8;10 Ex 7.3 Q5;6;7;8;9 Example: #2 (pg#234) Chapter 8 Ex 8.1 Q6;7;8;9;10;11;13 Ex 8.2 Q3;4 Ex 8.3 Q2;3;4 Chapter 10 Ex 10.1 Q3;4;5;6;8 Ex 10.2 Q4;5;6;7;9;10;12;13;14;15;16 Q17;18;19;20 Ex 10.4 Q3 (ii;iii;iv);4 (i;5) Chapter 11 Ex 11.1 Q1;2;4;8;10;11;12;13;14;15 Ex 11.3 Q1;2;3;4 Ex 11.4 Q3;4;5 Chapter 12 Ex 12.1 Q2;3;4 Ex 12.3 Q8;10;11;12 Example: 1;2 Ex 12.4 Q3;4;5

Board Of Intermediate Education Karachi

5/19/2025, 7:45:27 PM

*Board of Intermediate Education Karachi* Pakistan Studies – Class XII Free Midnight Target Paper Section "B" (Short Answer Questions) (i) Explain Ideology of Pakistan or Two Nation Theory. Write FOUR Sufi saints of South Asia. (ii) What is Indus Basin Treaty? OR Write TWO important natural resources of Pakistan. (iii) Describe the importance of geographical location / Northern Mountains of Pakistan. (iv) Describe the significance of Industry OR Agriculture of Pakistan's economy. Write FOUR Islamic provisions of Pakistan’s 1973 Constitution. (v) How does the superior judiciary safeguard fundamental rights of citizens? State the social impact of Islam on South Asia. (vi) Describe 3rd June Plan 1947. OR Write importance of any one regional language. (vii) Write names of any FOUR organs of UNO. OR Enlist elements of Nation State. (viii) Write a note on Indus Valley Civilization. Describe FOUR points on Lucknow Pact. *Section "C" (Detailed Answer Questions)* 3. Write aims & objectives of Pakistan. OR Describe initial problems of Pakistan. 4. Describe the importance or role of Urdu in national solidarity. OR Describe the salient features of Pakistani culture. 5. Explain fundamental principles of foreign policy of Pakistan. Describe important political events that took place from 1940 to 1947 in Pakistan Movement.

Board Of Intermediate Education Karachi

5/19/2025, 3:30:17 PM

XII Physics Midnight Numericals 1. Calculate the root mean square speed of molecules at 0°C and 1.0 atm pressure. Assuming hydrogen to be an ideal gas. The density of hydrogen is 8.99 × 10⁻² kg/m³. 2. A heat engine works at the rate of 500 kW. The efficiency of the engine is 30%. Calculate the loss of heat per hour. 3. X-rays with an energy of 300 keV undergo Compton scattering with a target. If the scattered X-rays are detected at 30° relative to the incident X-rays: Determine the Compton shift at this angle. Find the energy of the scattered X-rays. Calculate the energy of the recoiling electron. 4. A solenoid has length L = 1.23 m and inner diameter d = 3.55 cm, and it carries a current I = 5.57 A. It consists of five close-packed layers, each with 850 turns along length L. What is the magnetic field (B) at its center? 5. A capacitor of 200 pF is charged to a potential difference of 100 V. Its plates are then connected in parallel to another capacitor, and the potential difference becomes 60 V. Find the capacitance of the second capacitor. 6. A 50 g piece of copper at 100°C is placed in 200 g of water at 20°C. If the final temperature of the system is 21.8°C, calculate the specific heat capacity of copper. (Specific heat of water = 4.18 J/g°C) 7. In an RLC circuit, R = 50 Ω, L = 0.1 H, and C = 50 μF. Calculate the resonance frequency. 8. The half-life of ₁₀₄P²⁰¹₀ is 140 days. By what percentage does its activity decrease per week? OR Alpha particles are accelerated from rest at a potential difference of 1 kV, then they enter a magnetic field B = 0.2 T at an angle of 45° to the magnetic field. Calculate the radius of the path. 9. In an RL circuit, R = 30 Ω and L = 0.2 H. Calculate the total impedance at a frequency of 60 Hz. 10. What is the coefficient of performance (COP) of a refrigerator that operates between temperatures -3.00°C and +27.0°C? OR A heat engine works at the rate of 500 kW. The efficiency of the engine is 30%. Calculate the loss of heat per hour.