TNUSRB Constable flashcards
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32 cards. Read the term and the definition here. The deck at the top of this page is optional.
- Article 32
- Constitutional right to move the Supreme Court for enforcement of Fundamental Rights, called the heart and soul of the Constitution by Dr. B. R. Ambedkar.
- Kallanai (Grand Anicut)
- Ancient dam across the Cauvery in Tamil Nadu built by Karikala Chola, still functioning and among the oldest water-diversion structures in the world.
- Tamil Nadu Assembly strength
- The state Legislative Assembly has 234 elected seats, while Tamil Nadu sends 39 members to the Lok Sabha and 18 to the Rajya Sabha.
- Five thinais
- Sangam poetry classifies landscape and mood into kurinji, mullai, marutham, neythal and palai, each linked to a region and emotional state.
- Ohm's law
- Current through a conductor is directly proportional to voltage and inversely proportional to resistance, written I = V/R with resistance in ohms.
- Photosynthesis equation
- Six carbon dioxide molecules plus six water molecules and light energy yield one glucose molecule and six oxygen molecules inside chloroplasts containing chlorophyll.
- Universal donor
- O negative red blood cells lack A, B and Rh antigens, so they can be transfused to recipients of any ABO and Rh type in emergencies.
- Sublimation
- Direct change of a substance from solid to gas without passing through the liquid state, seen in camphor, dry ice and iodine on heating.
- Vitamin C deficiency
- Lack of ascorbic acid causes scurvy, marked by bleeding gums, poor wound healing and weakness; citrus fruits are rich sources.
- Compound interest formula
- Amount after T years equals principal multiplied by (1 + rate/100) raised to the power T, with interest being amount minus principal.
- Profit percentage
- Profit divided by cost price multiplied by 100; loss percentage uses the same denominator, so cost price is always the base.
- km/h to m/s
- Multiply a speed in kilometres per hour by 5/18 to obtain metres per second; multiply metres per second by 18/5 for the reverse.
- Work together formula
- If A alone takes x days and B alone takes y days, working together they finish in xy divided by (x + y) days.
- LCM and HCF relation
- For any two positive integers, the product of their LCM and HCF equals the product of the two numbers themselves.
- Successive discounts
- Two discounts of a percent and b percent are equivalent to a single discount of a + b - ab/100 percent, not simply a + b.
- Train crossing platform
- Time to cross a platform equals train length plus platform length divided by speed; crossing a pole uses only the train length.
- Reverse alphabet position
- The reverse position of a letter equals 27 minus its forward position, so A is 26 and Z is 1.
- Right turn from north
- Facing north, a right turn points east; a further right turn points south, and each right turn rotates direction 90 degrees clockwise.
- Syllogism rule
- From 'All A are B' you cannot conclude 'All B are A'; a valid conclusion must be true in every possible arrangement.
- Leap year odd days
- A normal year shifts the weekday of a given date by one day and a leap year by two days, because of the extra 29 February.
- Maternal uncle
- In blood-relation puzzles, the mother's brother is the maternal uncle, while the father's brother is the paternal uncle.
- Tamil letter count
- Tamil has 12 vowels, 18 consonants and one ayutha letter, and with combined vowel-consonant forms the script totals 247 letters.
- Thirukkural structure
- Thiruvalluvar's work has 1330 couplets in 133 chapters of ten, grouped into three books on virtue, wealth and love.
- Tholkappiyam
- The oldest surviving Tamil grammar, attributed to Tholkappiyar, organised into sections on letters, words and meaning.
- Three mei classes
- Tamil consonants divide into vallinam (hard), mellinam (soft) and idaiyinam (medial), a classification central to sandhi rules.
- Uyirmei formation
- A uyirmei letter combines a vowel with a consonant, for example ka, kaa, ki and kee, giving the compound letters of the script.
- Article usage rule
- Use 'a' before consonant sounds and 'an' before vowel sounds, so 'an hour' but 'a university', judged by sound not spelling.
- Present perfect tense
- Formed with has or have plus the past participle, it describes a past action that still matters in the present, often with since or for.
- Passive voice formation
- The object becomes the subject, the verb becomes a form of be plus past participle, and the doer may follow 'by'.
- Prepositions of time
- Use 'in' with months, years and seasons, 'on' with days and dates, and 'at' with clock times and fixed expressions like night.
- Bolt from the blue
- An idiom meaning a sudden and completely unexpected event or shock, as if lightning struck from a clear sky.
- Subject-verb agreement
- A singular subject takes a singular verb; words such as each, every, either and neither are treated as singular even before plural nouns.