DSSSB TGT Computer Science PYQ, 7 Feb 2024, Shift 2 (12:30 PM)

Explanation

Argument I gives a real, relevant reason (re-using clothes reduces waste and supports sustainability). Argument II is an emotional, superficial claim with no practical basis, so it is weak.

Explanation

The code is the sum of the letter positions divided by 4: LOMQG = 12+15+13+17+7 = 64, 64/4 = 16; WTQMC = 76/4 = 19. LSOMI = 12+19+15+13+9 = 68, 68/4 = 17.

Explanation

First letters go N, I, F, A, X (-5, -3, -5, -3, wrapping A to X); second letters R, Y, J, Q, B (+7, +11 alternately); third letters C, N, U, F, M (+11, +7 alternately). Only XBMW fits.

Explanation

MKH, WUR and KIF all move backward by 2 then 3 letters (e.g. M-2=K, K-3=H). MPR moves forward (+3, +2), so it is the odd one.

Explanation

Each word is split into two 4-letter halves and each half is reversed: STOP to POTS, WARS to SRAW. LAPT becomes TPAL and OPST becomes TSPO, giving TPALTSPO.

Explanation

The father advising her to exercise shows he cares about her health, so I follows. Nothing in the statement suggests a chronic disease; daily exercise is advised for general fitness, so II does not follow.

Explanation

After swapping the signs the expression becomes 38 ÷ 57 × 9 + 18 − 12. 38/57 × 9 = 6, then 6 + 18 − 12 = 12.

Explanation

In each pair the second number is the first plus 191: 442 + 191 = 633 and 186 + 191 = 377. Likewise 313 + 191 = 504.

Explanation

Q is 2nd from left with R just to its right, and S right of R, so positions 2-4 are Q, R, S. P is 7th, and U must sit between T and P, so U is 6th and T 5th. U is immediately left of P.

Explanation

With only "some" links between C-D and D-E, no definite relation between E and C, or between C and G, can be drawn. "No E is G" does not mean no D is G, since some D may lie outside E. So none follows.

Explanation

Position from left = total − position from right + 1 = 40 − 13 + 1 = 28.

Explanation

The differences are −3, +9, −27, +81, −243 (each multiplied by −3). So 260 − 243 = 17.

Explanation

WXUZ, NOLQ and IJGL follow +1, −3, +5 (e.g. W, X, U, Z). In EFCG the last step is +4 (C to G), so it is the odd one.

Explanation

Each letter moves one step forward: N to O, Q to R, T to U. Applying the same to ADH gives BEI.

Explanation

J ÷ P: J is son of P. P + K: P is husband of K. K × M: K is mother of M. M − R: M is wife of R. So P is the father of M, who is R's wife; P is R's wife's father.

Explanation

After swapping 7 and 9, option B becomes 7 × 4 − 9 × 3 = 28 − 27 = 1, not 4. The others hold: 7 − 9 + 3 = 1, 7×1 − 9×2 = −11, 9×2 + 7 − 4 = 21.

Explanation

The rule is n² × (n − 1): 6² × 5 = 180 and 8² × 7 = 448. So 10² × 9 = 900.

Explanation

After a collapse, saving trapped and injured people is the immediate, practical step, so I follows. Abandoning the whole town because one bridge failed is an extreme, impractical response, so II does not follow.

Explanation

Expanding operations to reach the world market clearly shows the corporation wants a global share, so II follows. Nothing indicates it is uncompetitive, so I does not follow.

Explanation

In the diagram, the part of the Worker triangle lying outside both the Educated rectangle and the Man circle is 12. (The 3 inside the circle are uneducated men who are workers; counting them would give 15, which is not an option, so the intended answer is 12.)

Explanation

HS Prannoy won bronze in men's singles at the 2023 BWF World Championships in Copenhagen, losing to Kunlavut Vitidsarn in the semi-final.

Explanation

In January 2023 ISRO signed an MoU with Microsoft to support Indian space-tech startups with technology tools, mentoring and its Microsoft for Startups Founders Hub platform.

Explanation

Article 343(1) states that the official language of the Union shall be Hindi in Devanagari script. Article 280 is the Finance Commission, 324 the Election Commission, 226 High Court writs.

Explanation

The Narmada rises at Amarkantak on the Amarkantak plateau (Maikal range) in Madhya Pradesh and flows west into the Arabian Sea.

Explanation

The Siege/Battle of Seringapatam in 1799 ended the Fourth Anglo-Mysore War; Tipu Sultan was killed defending his capital.

Explanation

Article 315 provides for Public Service Commissions for the Union (UPSC) and for the States (SPSCs).

Explanation

The Nalwari Fair is a famous cattle fair held every March at Bilaspur in Himachal Pradesh.

Explanation

Article 21 states that no person shall be deprived of life or personal liberty except according to procedure established by law.

Explanation

Silappadikaram, one of the five great Tamil epics, was composed by Ilango Adigal. Sattanar wrote Manimekalai, Thiruvalluvar wrote the Tirukkural, and Kovalan is the epic's hero.

Explanation

In its December 2023 monetary policy, the RBI kept the repo rate unchanged at 6.5 percent.

Explanation

The Indian National Congress was founded in December 1885 in Bombay, with A.O. Hume's initiative and W.C. Bonnerjee as its first president.

Explanation

As per the 2011 Census, Uttar Pradesh is the most populous state, with about 19.98 crore people.

Explanation

On 23 November 2023 the Ministry of Social Justice and Empowerment signed an MoU with ISKCON to spread the message of the Nasha Mukt Bharat Abhiyaan.

Explanation

Akash Ambani announced in December 2023 that Jio is working with IIT Bombay on "Bharat GPT", an Indian large language model project.

Explanation

Amla is famous as a rich source of Vitamin C. Carrot, mango and papaya are rich in beta-carotene, which gives Vitamin A.

Explanation

Henry Louis Vivian Derozio, a teacher at Hindu College, Calcutta, inspired the radical Young Bengal Movement in the late 1820s.

Explanation

Citrus fruits like oranges and lemons contain citric acid. Oxalic acid is in tomatoes/spinach, methanoic acid in ant stings, lactic acid in curd.

Explanation

Article 65 lets the Vice-President act as President when the office falls vacant, or discharge his functions when the President is absent or unable to act.

Explanation

The Shevaroy Hills are in Tamil Nadu, in the Eastern Ghats. Manipur, Patkai and Naga hills are part of the Purvanchal (Eastern) hills.

Explanation

ICICI (Industrial Credit and Investment Corporation of India) was set up in 1955 at the initiative of the World Bank, the Government of India and Indian industry.

Explanation

The age difference of 13 − 10 = 3 parts equals 18 years, so 1 part = 6: Amit 60, Ankit 78. After 12 years: 72 : 90 = 4 : 5.

Explanation

"8 times more" means E1 = E2 + 8E2 = 9E2. E2 is less than E1 by 8E2, i.e. 8/9 × 100 = 88.88 percent.

Explanation

From the chart, year P total = 160+50+40+35+48+52 = 385 and year Q total = 68+72+60+170+96+44 = 510. So J2 − J1 = 510 − 385 = 125.

Explanation

The total age rises by 30 − 20 = 10 years, so the average rises by 10/40 = 0.25. Correct average = 21 + 0.25 = 21.25 years.

Explanation

P + Q − R = 6 + 5 − 3 = 8 parts = 32, so 1 part = 4. Q = 5 × 4 = 20.

Explanation

Amount = 14400 × 1.1³ = 14400 × 1.331 = 19166.4. CI = 19166.4 − 14400 = Rs. 4766.4.

Explanation

Surface area depends on the square of the dimensions: 0.88² = 0.7744, so the area falls by 1 − 0.7744 = 22.56 percent.

Explanation

For divisibility by 9 the digit sum must be a multiple of 9: 8 + 5 + 9 + M = 22 + M, so M = 5 (sum 27).

Explanation

Profit = 12 percent of 230 = 0.12 × 230 = Rs. 27.6.

Explanation

Selling price is 75 percent of the marked price, so MP = 7200 / 0.75 = Rs. 9600.

Explanation

SI per year = 28800/2 = 14400. CI − SI = 7200 is interest on the first year's interest, so rate = 7200/14400 = 50 percent. Principal = 14400 / 0.5 = Rs. 28800.

Explanation

Distance = 210 + 390 = 600 m and speed = 54 × 5/18 = 15 m/s. Time = 600/15 = 40 seconds.

Explanation

Using BODMAS: 33 ÷ 11 = 3, 75 ÷ 5 × 2 = 30, 6 ÷ 12 × 30 = 15. So 3 + 30 − 15 = 18.

Explanation

Population after 3 years = 30000 × 1.2³ = 30000 × 1.728 = 51840.

Explanation

12 divides 36 (12 × 3) and 240 (12 × 20), and no larger number divides 12, so the HCF is 12.

Explanation

Area = L × 5L/8 = 160, so L² = 256 and L = 16 m, B = 10 m. Difference = 6 m.

Explanation

X = (X+Y+Z) − (Y+Z) = 1/45 − 1/90 = 1/90; Z = 1/45 − 1/60 = 1/180. X + Z = 1/90 + 1/180 = 1/60, so 60 days.

Explanation

Each degree = 18000/360 = 50. I: avg of C1, C2 = 69° and of C3, C5 = 66°, difference 3° = 150, true. III: C2 : C6 = 8 : 60 = 2 : 15, true. II is false: C6 (60°) is twice C4 (30°), not half.

Explanation

600/(s − 20) − 600/s = 8 gives s(s − 20) = 1500, so s = 50 km/hr. Check: 600/30 − 600/50 = 20 − 12 = 8 hours.

Explanation

Total rate over the period = 4 × 3 + 7 × 9 = 75 percent of the sum. So sum = 42000 / 0.75 = Rs. 56000.

Explanation

Obstinate means stubbornly refusing to change one's opinion, i.e. headstrong.

Explanation

Quarantine means isolating or keeping apart; its opposite is assimilate, meaning to absorb or integrate into a group.

Explanation

A negative statement with "can't" takes a positive tag using the same auxiliary and pronoun: "You can't hear..., can you?"

Explanation

Option D spells every word correctly. The others contain "neccesary", "trafic" and "Complience" respectively.

Explanation

Friendly means kind and pleasant towards others; its opposite is hostile, meaning unfriendly or aggressive.

Explanation

The sentence reads: "Developing basic infrastructure and the production sector (Q) is the only way to face an (P) economic crisis and the Centre has the (S) responsibility to help states in this respect (R)."

Explanation

"Call it a day" means to stop working on something, usually because one has done enough or is tired.

Explanation

Option D is correct. The others misspell "reach" (rich), "issue" (isue, essue) or "consensus" (conssensus).

Explanation

Q introduces natural fires on the Great Plains, R shows Native Americans also used fire, P explains settlers suppressed fire, and S describes its modern return as controlled burns. Hence QRPS.

Explanation

The blank modifies the verb "chewed", so an adverb is needed: "chewed slowly".

Explanation

The phrase is "brim with" something, meaning to be full to the edge: her eyes brimmed with tears.

Explanation

"For" is used with a period of time: "which we have benefited (from) for thousands of years".

Explanation

"Take to the streets" is an idiom meaning to go out and protest publicly, which fits residents reacting to the mayor's alleged kidnapping.

Explanation

A positive statement in the past with "was" and subject "she" takes the negative tag "wasn't she".

Explanation

"Roll up one's sleeves" means to prepare for hard work, which matches getting ready for upcoming exams.

Explanation

The passage focuses on India's rapid population growth (an Australia added every year, 16 million more people yearly) and the problems it causes, such as unemployment and poverty.

Explanation

The passage says India finds it difficult to make progress in "employment, alleviation of poverty and backwardness" due to its huge population, so all three are meant.

Explanation

It means the number of people India adds each year is about equal to the whole population of Australia.

Explanation

Alleviation means reducing or removing a problem; of the options, "eradicate" (remove completely) is closest in meaning.

Explanation

"Extinct" means no longer existing; its opposite is "prevailing" (currently existing), a word used in the passage ("prevailing trend"). Lost, obsolete and defunct are synonyms of extinct.

Explanation

सही क्रम 2,4,1,3 है: "बच्चों के कोमल मन में बातों को गहराई तक पहुंचाने का तरीका कहानियों से बेहतर और क्या हो सकता है। खासकर, पंचतंत्र की कहानियां, जिसमें बेहतर सीख... की ओर बढ़ने की प्रेरणा मौजूद होती है।"

Explanation

"टुकुर-टुकुर देखना" का अर्थ है एकटक या टकटकी लगाकर देखना, यानी बिना पलक झपकाए लगातार देखते रहना।

Explanation

"तीनों लोक" (स्वर्ग, पृथ्वी, पाताल) में "तीनों" संख्यावाचक विशेषण है, जो "लोकों" संज्ञा की विशेषता बताता है।

Explanation

"तौल-तौल कर बोलना" का अर्थ है बहुत सोच-विचार कर, सावधानी से एक-एक शब्द बोलना।

Explanation

प्रमाण = प्र + मान। यहाँ "र" के प्रभाव से "न" का "ण" हो गया है (णत्व विधान), इसलिए "प्रमान" के स्थान पर "प्रमाण" बनता है।

Explanation

"अपना हाथ जगन्नाथ" का अर्थ है अपने हाथ से किया गया काम सबसे अच्छा होता है; अपने हाथ में अधिकार हो तो काम मनचाहे ढंग से होता है।

Explanation

सही क्रम 1,3,2,4 है: पहले समय और माहौल (आश्विन का तीसरा पहर), फिर "मैं" दोस्त के घर ताश खेल रहा था, फिर एक व्यक्ति मेरा नाम लेते हुए आया, और अंत में वह बगल की कुर्सी पर बैठ गया।

Explanation

"प्यार से सबका दिल जीतना" सार्थक प्रयोग है; यहाँ भाववाचक संज्ञा "प्यार" ही उपयुक्त है, लकड़ी, प्लास्टिक या प्रार्थना से अर्थ नहीं बनता।

Explanation

गणेश के पर्यायवाची हैं लम्बोदर, गजानन, विनायक, एकदंत। नीरद बादल का, चक्रपाणि विष्णु का और कौशलेन्द्र राम का पर्याय है।

Explanation

"गुण" के अनेक अर्थ हैं, जैसे विशेषता (खूबी), रस्सी या धागा, धनुष की डोरी, लाभ आदि; दिए गए विकल्पों में "विशेषता" इसका एक अर्थ है।

Explanation

मोक्ष का अर्थ है बंधन से मुक्ति, इसलिए इसका विलोम "बंधन" है।

Explanation

"मिठाई के डब्बे में से" सही प्रयोग है; संबंध कारक में आगे "डब्बे" (पुल्लिंग, विकारी रूप) आने के कारण "का" के स्थान पर "के" लगता है।

Explanation

इत्यादि = इति + आदि। यह यण् संधि है: "इ" के बाद भिन्न स्वर "आ" आने पर "इ" का "य्" हो जाता है (ति + आ = त्या)।

Explanation

ठंड से दांतों का आपस में बजना "दांत कटकटाना" कहलाता है। "कांपने" शरीर के लिए प्रयुक्त होता है, दांतों के लिए "कटकटाने" उपयुक्त क्रिया है।

Explanation

रमा लक्ष्मी का नाम है, और श्री भी लक्ष्मी का पर्यायवाची है। निशा रात का, कटक सेना का पर्याय है।

Explanation

गद्यांश जलवायु परिवर्तन के कारण अल्पाइन आइबेक्स की बदलती गतिविधियों (दिन से रात की आदतें) और इससे बढ़ते शिकार जोखिम तथा घटती जनसंख्या की आशंका पर केंद्रित है।

Explanation

गद्यांश के अनुसार व्यवहार पैटर्न में बदलाव से शिकार के जोखिम "बढ़ रहे" हैं, कम नहीं हो रहे। इसलिए विकल्प B का तथ्य गद्यांश में नहीं है; बाकी तीनों तथ्य गद्यांश में दिए गए हैं।

Explanation

परिवर्तन का अर्थ है बदलाव; इसका विलोम "स्थिरता" है, यानी एक ही अवस्था में बने रहना।

Explanation

जीवनशैली का अर्थ है किसी व्यक्ति, समूह या संस्कृति के जीवन जीने का विशिष्ट तरीका; गद्यांश में बकरियों की दैनिक आदतों के संदर्भ में यही अर्थ है।

Explanation

प्रमाण का अर्थ है सबूत, अर्थात् साक्ष्य। मिथ्या, कृत्रिम और काल्पनिक तो प्रमाण के विपरीत भाव वाले शब्द हैं।

Explanation

Data privacy is the trade-off between data collected and product performance (2); K-anonymity measures how many users share an attribute (1); L-diversity extends this across several sensitive attributes (3). So I-2, II-1, III-3.

Explanation

Exploratory Data Analysis explores data without fixed assumptions, so it offers flexible ways to generate hypotheses. Not giving definitive answers and less realistic accuracy statements are its drawbacks, not advantages.

Explanation

A repeater only regenerates the signal bit by bit, without reading addresses or frames, so it works only at the physical layer.

Explanation

GETDATE() in SQL Server returns the current database system timestamp as a datetime value without the time zone offset.

Explanation

max() on a string returns the character with the highest ASCII/Unicode value, e.g. max("apple") gives "p". len() gives length; hvalue() and long() are not string functions.

Explanation

Communication system calls include creating/deleting connections, sending/receiving messages and attaching or detaching remote devices. Request/release device is device management, allocate/free memory is process control, read/write/reposition is file management.

Explanation

A primary index is an ordered file of fixed-length records with two fields: the primary key value and a pointer to the disk block holding that record.

Explanation

Many AI models are called "black boxes" because their internal decision-making cannot be easily seen or explained, which hides bias. Deepfakes are fake media and K-anonymity is a privacy measure.

Explanation

Since a = 20 and b = 35, the condition a >= b is False, so the else branch runs and prints "No".

Explanation

Cyber laws such as the IT Act, 2000 provide legal remedies against cyber crime, including punishment by imprisonment and fines.

Explanation

An Optical Mark Reader senses the presence or absence of pen/pencil marks at fixed positions, as in OMR answer sheets. OCR reads printed characters instead.

Explanation

ord() converts a character to its integer Unicode code, e.g. ord("A") = 65. tuple(), dict() and set() build collections.

Explanation

Minterms 0, 2, 4, 6 (all with z = 0) group into z'. Minterms 4 and 5 (x = 1, y = 0) group into xy'. So F = z' + xy'.

Explanation

strip() returns a copy of the string with leading and trailing whitespace removed. split() makes a list, capitalize() changes case.

Explanation

DATEDIFF returns the difference between startdate and enddate in the given datepart, so I is correct. The datepart cannot be supplied through a user-defined variable or quoted string, so II is wrong.

Explanation

Error control in the data link layer uses ARQ (Automatic Repeat reQuest): damaged or lost frames are detected and retransmitted.

Explanation

append() adds a single element to the end of a list. pop() removes an element, sort() orders the list, index() finds a position.

Explanation

The ALU contains the circuits for arithmetic (such as binary addition), logic and shift operations. The control unit only directs operations.

Explanation

Narrow AI (ANI) seems intelligent but has no awareness (2); General AI (AGI) acts and thinks like a conscious, smart human (3); Super Intelligence is smarter than humans (1). So I-2, II-3, III-1.

Explanation

print() of a tuple shows its repr: parentheses, with strings in single quotes, so the output is ('Example', 1, 'Tuple').

Explanation

The mutual exclusion condition requires at least one resource to be held in a non-sharable mode, so only one process can use it at a time.

Explanation

A weak entity is drawn as a double rectangle (option C). A single rectangle is a strong entity, a diamond a relationship, and a double diamond an identifying relationship.

Explanation

The volume control block (superblock) holds volume details such as the number of blocks in the partition, block size and free-block count. Boot information is in the boot control block; the unique identifier is in the FCB.

Explanation

"r+" opens a file for reading and writing with the file pointer at the beginning. "a+" places it at the end; "rb" is read-only and "ab" append-only.

Explanation

RISC processors use simple, fixed-length instructions that are easy to decode, with hardwired control and few instructions. Microprogrammed control, memory operands and 100-250 instructions are CISC traits.

Explanation

Children's activity on social media must be monitored because they are vulnerable to privacy risks. The other options are false: social media addiction can hurt studies, and fake news and misuse can disturb law and order.

Explanation

In register indirect mode the chosen register holds the memory address of the operand, not the operand itself.

Explanation

VLINK sets the colour of visited links (those already clicked). LINK is for unvisited links and ALINK for the active link while it is being clicked.

Explanation

An assembler translates assembly mnemonics into machine code, and because assembly instructions map to a specific processor's instruction set, the program is machine dependent. Both are true.

Explanation

One-address instructions use an implied accumulator (AC) for all data manipulation, e.g. ADD X means AC = AC + M[X].

Explanation

Under the DPDP Act, 2023, a "child" is a person who has not completed eighteen years. Digital personal data is data in digital form, so B is wrong.

Explanation

Repositioning within a file (file seek) only changes the current-file-position pointer, so it needs no actual I/O.

Explanation

The Instruction Register (IR) holds the instruction currently being decoded and executed, for use by the control unit.

Explanation

Dictionary values may repeat, but keys must be unique; assigning to an existing key overwrites its value.

Explanation

The dispatcher gives control of the CPU to the process chosen by the short-term scheduler, doing the context switch and jump to user mode.

Explanation

A dot matrix printer strikes pins against an inked ribbon, so it is an impact printer. Inkjet, laser and thermal printers are non-impact.

Explanation

A point-to-point connection gives a dedicated link between exactly two devices. A shared, timeshared link describes a multipoint connection, so only I is correct.

Explanation

In DMA burst transfer, a block of several memory words is sent in one continuous burst while the DMA controller holds the bus. Cycle stealing transfers one word at a time.

Explanation

First Normal Form requires atomic attribute values, so it disallows nested relations or relations as attribute values within tuples.

Explanation

The HR tag supports SIZE, WIDTH, ALIGN and NOSHADE. There is no SHADE attribute.

Explanation

Copyright gives the creator legal rights over their original work, enabling them to earn recognition or financial benefit from its use.

Explanation

Much e-waste from developed countries is shipped to developing countries such as India, where metals like copper, iron, silicon, nickel and gold are recovered in recycling.

Explanation

A pandas DataFrame is a two-dimensional labelled data structure whose columns can hold different data types, like a table.

Explanation

A semaphore is accessed, apart from initialisation, only through the atomic operations wait() (P) and signal() (V).

Explanation

Security is a major challenge in IoT adoption, because many connected devices with weak protection can be hacked or leak data.

Explanation

The head element is a container for tags giving information about the page, such as title, meta, link and style. The body holds visible content.

Explanation

Discarded, irreparable computers and electronic goods are called electronic waste (e-waste).

Explanation

A pandas Series is a one-dimensional labelled array that can hold any data type. A DataFrame is two-dimensional.

Explanation

The E-Waste (Management) Rules 2016 cover IT and telecom equipment and consumer electrical and electronics, and also include compact fluorescent lamps (CFL) and other mercury-containing lamps. So both apply.

Explanation

An HTML comment starts with <!-- and ends with -->, as in option D.

Explanation

An ImportError (here ModuleNotFoundError) means Python could not find the pandas module among installed libraries, so only III is correct.

Explanation

set_index() takes a column name or list of column names and returns a new DataFrame indexed by those columns.

Explanation

Python identifiers may contain letters, digits and underscores, so _ is allowed. They cannot start with a digit, cannot be keywords, and have no length limit.

Explanation

XML element names must not start with "xml" (in any case), cannot start with a number or contain spaces, but can contain letters, digits and characters like hyphen and underscore.

Explanation

Intellectual property rights are given to the creator or inventor, giving legal protection over their creation or invention.

Explanation

In Python, # starts a single-line comment; everything after it on that line is ignored.

Explanation

pandas merge() joins DataFrames on common columns, like SQL joins, so tables can be combined as in a database.

Explanation

IPR such as patents and copyrights are granted for a certain, fixed period of time, after which the work enters the public domain.

Explanation

Exposure variability depends mainly on the type of e-waste, since different devices contain different toxic substances such as lead, mercury and cadmium.

Explanation

The <BR> tag inserts a line break. <B> makes text bold; <BL> and <L> are not standard tags.

Explanation

CEILING returns the smallest integer greater than or equal to the value, e.g. CEILING(4.2) = 5. FLOOR returns the largest integer less than or equal to it.

Explanation

LRU is a stack algorithm and never suffers from Belady's anomaly. FIFO can give more page faults with more frames, so it does suffer from it.

Explanation

A string is a sequence of characters, which can include letters, digits and symbols, e.g. "Ab12#@".

Explanation

SELECT * retrieves all attributes (columns) of the selected tuples.

Explanation

UTF-8 is the most widely used Unicode encoding; it uses 1 to 4 bytes per character and is ASCII-compatible. UTF-17, 61 and 35 do not exist.