UP Police Assistant Operator study materials
UP Police Assistant Operator study resources

UP Police Assistant Operator flashcards

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National Emergency Article
Article 352 allows the President to proclaim a national emergency on grounds of war, external aggression or armed rebellion, with written recommendation of the Cabinet.
Repo Rate
The rate at which the Reserve Bank of India lends short-term funds to commercial banks against government securities; raising it typically cools inflation by making credit costlier.
Universal Blood Donor
A person with O negative blood group, because O negative red cells lack A, B and Rh antigens and can be transfused to recipients of any ABO group.
Alligation Rule
A method to find the ratio in which two ingredients of known prices must be mixed: quantity ratio equals the difference of each price from the mean price, taken crosswise.
Blood Relation Uncle
Maternal uncle is the mother's brother; paternal uncle is the father's brother. In family-tree puzzles, trace the connecting line rather than assuming gender.
समास क्या है
दो या दो से अधिक शब्दों के मेल से बने शब्द को समास कहते हैं; इसके मुख्य भेद तत्पुरुष, द्वंद्व, बहुव्रीहि, अव्ययीभाव, कर्मधारय और द्विगु हैं।
Subject-Verb Agreement Rule
A singular subject takes a singular verb and a plural subject a plural verb; words like each, every, either and neither are singular even when followed by plural nouns.
Universal Logic Gates
NAND and NOR gates are called universal because any other logic gate or Boolean function can be constructed using only NAND gates or only NOR gates.
Absolute Cell Reference
A cell reference written with dollar signs, such as $B$4, which stays fixed when a formula is copied to another cell, unlike a relative reference.
Private IP Ranges
Address ranges reserved for internal networks: 10.0.0.0 to 10.255.255.255, 172.16.0.0 to 172.31.255.255 and 192.168.0.0 to 192.168.255.255; not routable on the public internet.
Phishing Definition
A fraudulent email, message or website that impersonates a trusted entity to trick a user into revealing passwords, OTPs or financial details.
37th Amendment 1975
The 37th Constitutional Amendment Act, 1975, was enacted in the context of the Sikkim merger with India, making Sikkim an associate state before statehood.
Photosynthesis Equation
The process by which green plants use sunlight, carbon dioxide and water to make glucose and release oxygen: 6CO2 + 6H2O gives C6H12O6 + 6O2 in chloroplasts.
Atmospheric Pressure Value
At sea level, atmospheric pressure is about 101 kilopascals, equal to 760 mm of mercury or one atmosphere, and decreases with increasing altitude.
Money Bill Limitation
A Money Bill can be introduced only in the Lok Sabha on the President's recommendation; the Rajya Sabha may recommend changes but cannot amend or reject it and must return it within 14 days.
Black Soil Characteristics
Also called regur, black soil forms from Deccan trap lava, retains moisture well, is rich in iron and magnesium, and is ideal for cotton cultivation.
Standard Die Rule
On a standard die, opposite faces always sum to seven, so if one face shows 2, the opposite face shows 5; this rule solves most dice problems.
Divisibility by 11
A number is divisible by 11 if the difference between the sum of digits in odd positions and the sum in even positions is zero or a multiple of 11.
कर्मवाच्य वाक्य
जिस वाक्य में क्रिया का संबंध कर्म से हो और कर्ता छिपा या 'द्वारा' के साथ हो, उसे कर्मवाच्य कहते हैं; जैसे 'राम द्वारा पत्र लिखा गया'।
Idiom: Blue Moon
The idiom 'once in a blue moon' means something that happens very rarely; it is used to describe infrequent events, not literally a blue-coloured moon.
Binary to Decimal
To convert binary 1101 to decimal, multiply each bit by its place value: 8 + 4 + 0 + 1, which equals 13.
Excel IF Function
The IF function checks a condition and returns one value if true and another if false, written as IF(condition, value_if_true, value_if_false).
Usable Hosts per Subnet
For a subnet with n host bits, usable host addresses equal 2^n minus 2, because the all-zero network address and all-one broadcast address are reserved.
Cyber Fraud Helpline
In India, financial cyber fraud can be reported on helpline 1930 and the national portal cybercrime.gov.in, ideally within the golden hour to freeze funds.
BODMAS Rule
Order of operations: Brackets, Orders (powers and roots), Division and Multiplication from left to right, then Addition and Subtraction from left to right.
Concurrent List Subjects
Subjects on which both Parliament and state legislatures can legislate, including education, forests, criminal law and marriage; a central law prevails in conflict.
DigiLocker Purpose
A Government of India digital platform that stores verified documents such as driving licences and mark sheets in the cloud, accepted as valid proof.
Affect versus Effect
Affect is usually a verb meaning to influence, while effect is usually a noun meaning a result; for example, rain affects crops and has an effect on yield.
Gravitational Acceleration
Near Earth's surface, acceleration due to gravity is about 9.8 metres per second squared, meaning a falling body's speed increases by 9.8 m/s each second, ignoring air resistance.
Fiscal Deficit Formula
Fiscal deficit equals total government expenditure minus total receipts excluding borrowings; it shows how much the government must borrow to meet its spending.
Circular Seating Direction
In circular seating puzzles, if people face the centre, the person's left is clockwise; if they face outward, their left is anticlockwise.
Quadratic Root Sum
For a quadratic equation ax² + bx + c = 0, the sum of roots is −b/a and the product of roots is c/a, useful for checking answers quickly.
UPI PIN Safety
A UPI PIN is needed only to send or approve money, never to receive it; approving a collect request to receive money is a common fraud.
SMPS Function
The switched-mode power supply in a computer converts AC mains power into regulated DC voltages needed by the motherboard, drives and other components.
गुण संधि उदाहरण
अ, आ के बाद इ, ई आने पर ए बनता है; जैसे देव + इंद्र = देवेंद्र, नर + इंद्र = नरेंद्र; यह गुण संधि का उदाहरण है।
UPI Operator
The Unified Payments Interface is operated by the National Payments Corporation of India, enabling instant bank-to-bank transfers through mobile apps.
Largest Brackish Lagoon
Chilika Lake in Odisha is India's largest brackish-water lagoon, famous for migratory birds and Irrawaddy dolphins, and is a Ramsar site.
Article 32 Writs
Article 32 gives the Supreme Court power to issue five writs: habeas corpus, mandamus, prohibition, certiorari and quo warranto, for enforcement of Fundamental Rights.
Email Bcc Field
Bcc stands for blind carbon copy; recipients listed there receive the email but their addresses are hidden from other recipients, protecting privacy.
HTTP Status 404
The HTTP status code 404 means the requested resource was not found on the server, usually because the URL is wrong or the page was removed.
SIM Swap Fraud
A scam in which a fraudster gets a duplicate SIM issued for your number, then intercepts OTPs; signs include sudden loss of network and bank alerts.
Nalanda University
An ancient Buddhist centre of learning in present-day Bihar, patronised by Gupta rulers and later Harsha, attracting scholars from across Asia.
Escape Velocity Earth
The minimum speed needed for an object to escape Earth's gravity without further propulsion is about 11.2 kilometres per second.
Speed with Stops
If a vehicle's speed without stops is 50 km/h and with stops 40 km/h, the stop time per hour equals 1 minus 40/50, which is 0.2 hour or 12 minutes.
English: Diligent
Diligent means showing careful and persistent effort in work; its synonyms include hardworking and industrious, and its antonym is lazy or negligent.
Paste Special Values
A spreadsheet option that pastes only the results of copied formulas as static values, removing links to the original cells and preventing later changes.
Telnet versus SSH
Telnet on port 23 sends data including passwords in plain text, while SSH on port 22 encrypts the session and is the secure replacement for remote login.
RTGS Transfer
Real Time Gross Settlement transfers high-value funds individually and in real time through the RBI network, with no upper limit but a minimum threshold.
Von Neumann Architecture
A computer design in which program instructions and data share the same memory and bus, so the CPU fetches both from memory in the same cycle.
Negative Marking Strategy
When one-third of a mark is deducted for a wrong answer, attempt a guess only after eliminating at least two options, since random guessing has negative expected value.