HSC Bangladesh flashcards
HSC Bangladesh · Build recall with a focused review session.
32 cards. Read the term and the definition here. The deck at the top of this page is optional.
- স্বরবর্ণ কয়টি?
- বাংলা বর্ণমালায় স্বরবর্ণ ১১টি: অ, আ, ই, ঈ, উ, ঊ, ঋ, এ, ঐ, ও, ঔ।
- সমাস কাকে বলে?
- দুই বা ততোধিক শব্দের অর্থসংকোচন করে একটি পদে পরিণত করার প্রক্রিয়াকে সমাস বলে।
- কারক কয় প্রকার?
- কারক আট প্রকার: কর্তৃ, কর্ম, করণ, সম্প্রদান, অপাদান, অধিকরণ, সম্বোধন ও নিমিত্ত।
- রস কয় প্রকার?
- রস নয় প্রকার: শৃঙ্গার, হাস্য, করুণ, রৌদ্র, বীর, ভয়ানক, বীভৎস, অদ্ভুত ও শান্ত।
- Parts of speech
- Eight classes of words in English: noun, pronoun, verb, adjective, adverb, preposition, conjunction, interjection.
- Active to passive voice
- Object becomes subject, verb becomes 'be + past participle', and agent is introduced by 'by' (optional).
- Conditional sentence type 3
- If + past perfect, would have + past participle. Expresses unreal past situations and their imagined results.
- Subject-verb agreement rule
- Singular subject takes singular verb; plural subject takes plural verb. Indefinite pronouns like 'everyone' take singular verbs.
- ICT full form
- Information and Communication Technology - the use of computers and networks to store, process, and exchange information.
- Binary number system
- A base-2 numeral system using only digits 0 and 1. Each binary digit is a bit; 8 bits make one byte.
- Logic gates
- AND, OR, NOT are basic gates; NAND, NOR, XOR, XNOR are derived gates used in digital circuits.
- Primary key in database
- A field that uniquely identifies each record in a table. It cannot contain null values or duplicates.
- Newton's second law
- Force equals mass times acceleration: F = ma. It relates net force, mass, and acceleration of an object.
- Ohm's law
- Voltage equals current times resistance: V = IR. It applies to ohmic conductors at constant temperature.
- Mole concept
- One mole contains 6.022×10²³ particles (Avogadro's number). Molar mass is expressed in grams per mole.
- pH scale
- pH = −log[H⁺]. At 25 °C, pH below 7 is acidic, pH 7 is neutral, and pH above 7 is basic.
- Photosynthesis equation
- 6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂ in presence of light and chlorophyll, producing glucose and oxygen.
- Quadratic formula
- For ax² + bx + c = 0, x = [−b ± √(b²−4ac)] / 2a. The discriminant D = b²−4ac determines root nature.
- Derivative of xⁿ
- d/dx(xⁿ) = nxⁿ⁻¹ for any real n. This is the power rule of differentiation.
- Bangladesh Independence Day
- 26 March 1971 is declared as Bangladesh's Independence Day, commemorating the declaration of independence.
- Elements of state
- Four elements: population, territory, government, and sovereignty. All are essential for a state.
- Law of demand
- Other things equal, quantity demanded of a good falls when its price rises, and rises when price falls.
- Layers of atmosphere
- Troposphere, stratosphere, mesosphere, thermosphere, exosphere. Ozone layer lies in the stratosphere.
- Five pillars of Islam
- Shahadah (faith), Salah (prayer), Sawm (fasting), Zakat (charity), Hajj (pilgrimage). Zakat rate is 2.5%.
- Accounting equation
- Assets = Liabilities + Owner's Equity. It reflects the dual aspect concept of double-entry bookkeeping.
- Debit and credit rules
- Debit increases assets and expenses; credit increases liabilities, equity, and revenue. Used in double-entry accounting.
- Time value of money
- Future value FV = PV(1+r)ⁿ; present value PV = FV/(1+r)ⁿ. Money today is worth more than the same amount later.
- Working capital
- Current assets minus current liabilities. It measures short-term liquidity and operational efficiency of a business.
- Fourth subject rule
- An elective outside the main group; its grade points are included in GPA calculation but cannot exceed the average of other subjects in some rules.
- Practical marks distribution
- Typically 25 marks: laboratory work 15, viva voce 5, practical notebook 5 for science subjects.
- Continuous assessment
- Marks awarded by teachers based on class attendance, performance, and terminal examinations throughout the year.
- Practical notebook
- A record of experiments including aim, apparatus, procedure, observation, and result, submitted for practical assessment.