BD Police SI Written flashcards

32 cards. Read the term and the definition here. The deck at the top of this page is optional.

Number of Bangla letters

The Bangla alphabet has 50 letters: 11 vowels and 39 consonants, plus 10 conjunct forms and 3 phala signs.

Charyapada discovery

Charyapada, the earliest Bengali literary work, was discovered in 1907 by Haraprasad Shastri in the Nepal Royal Library.

Six types of samas

Bangla compound words fall into six types: dvandva, karmadharaya, tatpurusha, bahuvrihi, dvigu and avyayibhava.

Eight parts of speech

English grammar recognises eight parts of speech: noun, pronoun, verb, adjective, adverb, preposition, conjunction and interjection.

Passive voice formation

Passive voice uses be plus past participle. The active object becomes the subject, and the agent is optional after 'by'.

Third conditional structure

The third conditional uses if plus past perfect in the if-clause and would have plus past participle in the main clause.

Average formula

Average equals sum of all terms divided by number of terms. It applies to marks, speeds and grouped data equally.

Simple interest formula

Simple interest equals principal multiplied by rate and time, divided by 100. It stays constant each year.

Combined work rate

If A finishes a job in x days and B in y days, working together they finish it in xy divided by x plus y days.

Successive percentage change

Two successive changes of a percent and b percent give a net change of a plus b plus ab divided by 100 percent.

UN founding date

The United Nations was founded on 24 October 1945, headquartered in New York, and now has 193 member states.

SAARC establishment

SAARC was established in 1985 in Dhaka, and its permanent secretariat is located in Kathmandu, Nepal.

SDG framework

The Sustainable Development Goals, adopted in 2015, contain 17 goals and 169 targets with a 2030 deadline.

Language movement date

On 21 February 1952, students were killed in Dhaka during the Bengali language movement, which is now International Mother Language Day.

Mujibnagar government

The Mujibnagar government was formed on 17 April 1971; the Instrument of Surrender was signed on 16 December 1971.

Bangladesh area and borders

Bangladesh covers about 1,47,570 square kilometres, bordered by India, Myanmar and the Bay of Bengal, with the Tropic of Cancer crossing it.

Fundamental rights part

Fundamental rights are contained in Part III of the Bangladesh Constitution, Articles 26 to 47; Article 27 guarantees equality before law.

FIR section

A First Information Report is recorded under section 154 of the Code of Criminal Procedure, 1898, at the police station.

Cognizable offence meaning

A cognizable offence allows police to investigate and arrest without a magistrate's order; non-cognizable offences require one.

Production before magistrate

An arrested person must be produced before a magistrate within 24 hours of arrest, as required by the Constitution and CrPC.

Police Act 1861

The Police Act, 1861 organised the police as a force under a district superintendent answerable to the district magistrate.

Charge sheet section

After investigation, police submit a charge sheet or final report under section 173 of the Code of Criminal Procedure, 1898.

Inquest meaning

An inquest is an inquiry into a sudden or suspicious death, held by police under section 174 CrPC or by a magistrate.

Chain of custody

Chain of custody records who handled evidence and when, from seizure to court, to prove it was not tampered with.

RAM versus ROM

RAM is volatile memory that loses data when power is off; ROM is non-volatile and retains data permanently.

Memory unit conversion

One kilobyte equals 1024 bytes, one megabyte equals 1024 kilobytes, and one gigabyte equals 1024 megabytes.

LAN versus WAN

A LAN covers a small area such as an office, while a WAN spans large distances; the internet uses TCP/IP protocols.

Phishing definition

Phishing is a cybercrime in which attackers trick users into revealing passwords or financial data through fake messages or websites.

Essay structure

An essay has an introduction stating the thesis, a body developing arguments with evidence, and a conclusion restating the main point.

Formal letter format

A formal letter contains sender address, date, recipient address, salutation, subject line, body, closing and signature.

Syllogism validity rule

In a syllogism, a conclusion is valid only if it necessarily follows from the premises; 'all A are B, all B are C' gives 'all A are C'.

Precis writing rule

A precis keeps only the central idea in about one-third length, removes examples, and preserves the original tense and person.