Jharkhand Police Constable study materials
Jharkhand Police Constable study resources

Jharkhand Police 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.

Jharkhand Formation Day
15 November 2000, when Jharkhand became India's 28th state under the Bihar Reorganisation Act, 2000, with Ranchi as its capital.
Birsa Munda
Tribal leader (1875–1900) of the Munda community who led the Ulgulan rebellion against British rule; called Dharti Aba, his birthday is Janjatiya Gaurav Divas.
Sohrai painting
A GI-tagged tribal wall-art tradition of Hazaribagh in Jharkhand, painted during harvest festivals with natural earth colours and motifs of animals and plants.
Chota Nagpur Plateau
A mineral-rich plateau covering most of Jharkhand, composed largely of ancient Gondwana rock and known for coal, iron ore, mica, and copper deposits.
Damodar Valley Corporation
India's first multipurpose river valley project, set up in 1948 on the Damodar river, providing flood control, irrigation, and hydroelectric power across Jharkhand and West Bengal.
Jharkhand assembly strength
The Jharkhand Legislative Assembly has 81 elected members, and the state sends 14 members to the Lok Sabha and 6 to the Rajya Sabha.
Article 32
The Right to Constitutional Remedies, allowing citizens to move the Supreme Court for enforcement of Fundamental Rights; Ambedkar called it the heart and soul of the Constitution.
Fundamental Duties
Eleven duties of citizens listed in Article 51A, added by the 42nd Constitutional Amendment Act of 1976 on the recommendation of the Swaran Singh Committee.
Directive Principles
Guidelines in Part IV (Articles 36–51) directing state policy toward social and economic welfare; they are not enforceable in courts.
Tropic of Cancer in India
An imaginary latitude at 23.5° N that passes through eight Indian states, including Jharkhand, Chhattisgarh, Madhya Pradesh, Rajasthan, and Gujarat.
Santhal Hul
A tribal rebellion of 1855–56 led by Sidhu and Kanhu Murmu against British revenue systems and moneylenders in the Santhal Pargana region.
GDP expenditure formula
Gross domestic product at market prices equals consumption plus investment plus government spending plus net exports (exports minus imports).
Newton's second law
The net force on a body equals its mass multiplied by its acceleration (F = ma); force is measured in newtons, where one newton equals one kg·m/s².
Photosynthesis equation
Six carbon dioxide molecules plus six water molecules, using light energy and chlorophyll, produce one glucose molecule and six oxygen molecules in chloroplasts.
pH scale
A 0 to 14 scale of acidity: values below 7 are acidic, 7 is neutral, and above 7 is basic; litmus turns red in acid and blue in base.
Ohm's law
Current through a conductor is directly proportional to potential difference at constant temperature, expressed as V = IR where R is resistance in ohms.
Universal blood donor
People with O negative blood, because their red cells carry neither A nor B antigens nor the Rh D antigen, so they can be given to any recipient.
Mitochondria
Membrane-bound cell organelles that carry out aerobic respiration and produce most of the cell's ATP, often called the powerhouse of the cell.
Simple interest formula
Simple interest equals principal multiplied by rate multiplied by time, divided by 100; interest is calculated only on the original principal.
Compound interest formula
Amount equals principal times (1 + rate/100) raised to the time in years; compound interest is the amount minus the principal.
Work together formula
If A finishes a job in x days and B in y days, working together they finish it in xy divided by (x + y) days.
km/h to m/s
Multiply a speed in kilometres per hour by 5/18 to convert it to metres per second; multiply by 18/5 for the reverse.
Successive discount formula
Two successive discounts of a percent and b percent equal a single discount of a + b − ab/100 percent on the marked price.
Clock hand gain
The minute hand gains 5.5 degrees per minute on the hour hand, so the hands overlap every 65 and 5/11 minutes.
Opposite letters rule
In the English alphabet, opposite-position pairs sum to 27, such as A with Z, B with Y, and C with X; useful in coding questions.
Syllogism validity rule
A conclusion is valid only if it holds in every possible Venn diagram consistent with the given premises, not just one arrangement.
Odd days in a century
A century contains 24 leap years and 76 ordinary years, giving 5 odd days; 400 years give 0 odd days.
Election Commission of India
A constitutional body under Article 324 that conducts elections to Parliament, state legislatures, and the offices of President and Vice-President.
Khel Ratna Award
India's highest sporting honour, now named after Major Dhyan Chand, awarded annually by the Ministry of Youth Affairs and Sports.
Hindi ergative postposition
The postposition ने marks the subject of a transitive verb in perfective tenses, as in राम ने खाना खाया (Ram ate food).
Present perfect tense
Formed with has or have plus the past participle, it describes a past action connected to the present, as in 'She has finished the report'.
Active to passive voice
The object becomes the subject, the verb becomes a form of be plus the past participle, and the original subject follows 'by'.