Dakhil Examination flashcards
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32 cards. Read the term and the definition here. The deck at the top of this page is optional.
- স্বরবর্ণ
- বাংলা বর্ণমালার যে বর্ণগুলো স্বাধীনভাবে উচ্চারিত হয় এবং অন্য ব্যঞ্জনের সহায়তা ছাড়াই নিজস্ব ধ্বনি তৈরি করে; এগুলো মোট ১১টি।
- কারক
- বাক্যে ক্রিয়ার সঙ্গে বিশেষ্যের যে সম্পর্ক বোঝায় তাকে কারক বলে; এটি কর্তৃ, কর্ম, করণ, সম্প্রদান, অপাদান ও অধিকরণ এই ছয় প্রকার।
- সমাস
- দুই বা তার বেশি পদের অর্থসংক্ষেপে একটি পদে পরিণত হওয়ার প্রক্রিয়া; বাংলায় দ্বন্দ্ব, কর্মধারয়, তৎপুরুষ, বহুব্রীহি, দ্বিগু ও অব্যয়ীভাব সমাস প্রধান।
- Present perfect tense
- A tense formed with have or has plus the past participle. It links a completed past action to the present and cannot take definite past time markers such as yesterday.
- Passive voice
- A construction where the object of the active sentence becomes the subject and the verb takes the form be plus past participle, with the agent optionally introduced by 'by'.
- Third conditional
- A sentence pattern using had plus past participle in the if-clause and would have plus past participle in the main clause, expressing an unreal past situation and its imagined result.
- Prepositions of time
- Words placed before time expressions: 'at' for clock times, 'on' for days and dates, and 'in' for months, years and longer periods such as seasons.
- Quadratic formula
- The solution x = [−b ± √(b² − 4ac)] / 2a for the equation ax² + bx + c = 0, where a is not zero; the discriminant b² − 4ac shows the number of real roots.
- Pythagoras theorem
- In a right-angled triangle the square of the hypotenuse equals the sum of the squares of the other two sides, written as hypotenuse² = base² + perpendicular².
- Compound interest
- Interest calculated on both the original principal and previously earned interest, giving the total amount P(1 + r/100)ⁿ after n years at rate r percent.
- Polygon interior angle sum
- The total of the interior angles of a polygon with n sides equals (n − 2) × 180 degrees; for a regular polygon each exterior angle is 360/n degrees.
- Ohm's law
- The current through a conductor is directly proportional to the potential difference across it at constant temperature, expressed as V = IR where R is resistance.
- Photosynthesis
- The process in green plants where chlorophyll traps light to convert carbon dioxide and water into glucose and oxygen, summarised as 6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂.
- pH scale
- A scale from 0 to 14 measuring hydrogen ion concentration: values below 7 are acidic, 7 is neutral, and values above 7 are basic or alkaline.
- Meiosis
- A type of cell division producing four genetically varied haploid cells called gametes, halving the chromosome number so that fertilisation restores the diploid number.
- Language Movement 1952
- A movement in East Pakistan demanding Bangla as a state language, climaxing on 21 February 1952 when students died in Dhaka; UNESCO later honoured the date internationally.
- SAARC
- The South Asian Association for Regional Cooperation, founded in 1985 in Dhaka with its permanent secretariat in Kathmandu, Nepal, to promote regional cooperation.
- Sundarbans
- The world's largest mangrove forest, shared by Bangladesh and India, located in south-western Bangladesh and declared a UNESCO World Heritage Site for its biodiversity.
- Binary number system
- A positional number system using only the digits 0 and 1 with base 2, in which each place value is a power of two; decimal 10 equals binary 1010.
- RAM and ROM
- RAM is volatile working memory that loses data when power is off, while ROM is non-volatile memory holding permanent firmware used at start-up.
- IP address
- A unique numerical label assigned to each device on a network so data can be routed to it; IPv4 uses 32 bits and IPv6 uses 128 bits.
- Zakat
- An obligatory Islamic charity paid on qualifying wealth held for one lunar year, normally at 2.5 percent, and one of the Five Pillars of Islam.
- Four Noble Truths
- The core Buddhist teaching that suffering exists, it has a cause in craving, it can cease, and the Eightfold Path leads to that cessation.
- Four Vedas
- The oldest sacred scriptures of Hinduism, namely the Rig, Sama, Yajur and Atharva Vedas, containing hymns, ritual formulas and philosophical speculation.
- Ten Commandments
- The moral laws given to Moses on Mount Sinai and recorded in the Bible, forming a foundation of Christian ethical teaching on worship and conduct.
- Body mass index
- A screening measure calculated as weight in kilograms divided by the square of height in metres; 18.5 to 24.9 is generally regarded as the normal range.
- Cricket over
- A set of six legal deliveries bowled by one bowler from one end; an innings ends when ten wickets fall or the agreed number of overs is completed.
- Kabaddi raid
- An attacking move in which one player crosses into the opponents' half chanting 'kabaddi' continuously and must return within thirty seconds without being tackled.
- Crop rotation
- The practice of growing different crops in sequence on the same land to interrupt pest and disease cycles and maintain soil fertility, especially using nitrogen-fixing legumes.
- Accounting equation
- The fundamental bookkeeping relationship stating that total assets equal liabilities plus owner's equity, which must hold after every recorded transaction.
- Price elasticity of demand
- A measure of how strongly quantity demanded responds to price, calculated as the percentage change in quantity demanded divided by the percentage change in price.
- Mole concept
- The amount of a substance containing 6.022 × 10²³ particles; one mole of any gas occupies 22.4 litres at standard temperature and pressure.