PPSC Past Papers & Solved MCQs

Benazir Bhutto, a prominent Pakistani politician and former Prime Minister, met a tragic end in 2007. She was assassinated on December 27, 2007, in Rawalpindi, Pakistan, shortly after addressing a political rally. This event sent shockwaves globally and significantly impacted Pakistan's political landscape.

The correct answer, 2007, accurately reflects the year of her assassination. Options B (2008), C (2009), and D (2006) are incorrect dates. Her death occurred specifically in the final days of 2007, making it a pivotal moment in the country's history and a widely remembered tragedy.

The 1962 Constitution of Pakistan, promulgated by President Ayub Khan, established a presidential system of government. A key feature of its legislative structure was its unicameral nature. This means the legislature consisted of only one house, known as the National Assembly, concentrating legislative power within a single body.

Therefore, Unicameral is the correct answer. Option A, 'Dicameral' (or bicameral), refers to a two-house legislature, which was not the case under the 1962 Constitution. Option C, 'Confederate,' describes a system where independent states delegate limited powers to a central government, which does not define the legislative structure. Option D, 'None,' is incorrect as a specific system was in place.

Computational problems often involve organizing and manipulating data. The problem that specifically deals with arranging items or sequences in a particular order is sorting. Sorting algorithms are fundamental in computer science, used to arrange data elements (like numbers or strings) in ascending, descending, alphabetical, or other specified orders.

Therefore, Sorting is the correct answer. Option A, 'Searching,' involves finding a specific item within a collection, not rearranging the entire set. Option B, 'Indexing,' refers to creating a map or reference to data locations for faster retrieval, without altering the data's physical arrangement. Option D, 'None,' is incorrect because sorting perfectly describes the task of arrangement and sequencing.

In propositional logic, a compound proposition's truth value can be categorized. A tautology is always true, regardless of the truth values of its simple propositions. Conversely, a contradiction is always false. A proposition that is neither always true nor always false is known as a contingency.

Thus, Contingency is the correct answer. A contingency's truth value depends on the specific truth values of its components; it can be true in some cases and false in others. Option A, 'Equivalence,' describes when two propositions have the same truth value in all cases, not a type of proposition itself. Option B, 'Condition,' refers to an 'if-then' statement, which can be a tautology, contradiction, or contingency. Option D, 'Inference,' is the process of drawing conclusions, not a type of proposition.

The devastating air pollution event in London in December 1952, which led to thousands of deaths and severe health issues, is historically known as the Great Smog. This phenomenon was a thick, toxic mixture of smoke and fog, primarily caused by extensive coal burning for heating and industrial emissions, trapped by a temperature inversion.

Therefore, Smog is the correct answer. Option A, 'Mist,' refers to fine water droplets in the air, which are generally harmless. Option C, 'Fog,' is a cloud at ground level, primarily water vapor, and while it was a component, the toxicity came from the smoke. Option D, 'Sleet,' is a form of precipitation consisting of ice pellets, unrelated to air pollution in this context.

The world's first nuclear explosion, codenamed the Trinity test, occurred on July 16, 1945. This pivotal event was the culmination of the top-secret Manhattan Project, designed to develop the atomic bomb.

The correct answer is New Mexico. The test took place at the White Sands Proving Ground in New Mexico, USA, marking a new era in human history.

Hiroshima and Nagasaki are incorrect because these were the Japanese cities where atomic bombs were dropped in August 1945, *after* the Trinity test, as acts of war, not the site of the initial experimental explosion. Rajasthan is also incorrect; it is a state in India, which conducted its first nuclear test much later in 1974, unrelated to the world's first nuclear detonation.

In MS Excel, cells can contain various types of data, including text, numbers, and formulas. To differentiate between these, a specific convention is followed.

The correct answer is Equal sign. When you want to perform a calculation or use a function in a cell, you must always begin the entry with an equal sign (=). This tells Excel that the subsequent characters form a formula that needs to be evaluated, rather than being treated as plain text or a numerical value.

First cell referenced is incorrect because while formulas often reference cells (e.g., =A1+B1), the equal sign must precede any reference. Parenthesis are used within formulas for grouping operations but do not initiate a formula. Quotation marks are used to denote text strings within formulas or for specific functions, not to start a formula itself.

The Cuban Missile Crisis, which unfolded in October 1962, was a critical moment during the Cold War, bringing the world to the brink of nuclear conflict. It involved a tense standoff over the deployment of Soviet nuclear missiles in Cuba.

The correct answer is US & Soviet Union. This confrontation was primarily a direct struggle between the two global superpowers: the United States, led by President John F. Kennedy, and the Soviet Union, led by Premier Nikita Khrushchev. Cuba was the focal point, but the principal adversaries were these two nations.

Canada, Russia is incorrect; Canada was not a primary party, and the conflict involved the Soviet Union, not modern-day Russia. US, Canada & Cuba is also incorrect because while Cuba was central to the crisis's location and stakes, the direct confrontation and negotiation were between the US and the USSR, not involving Canada as a primary combatant.

During the Delhi Sultanate period, the Jizya was a tax levied on non-Muslim subjects. Traditionally, Brahmins were often exempted from this tax due to their religious status.

The correct answer is Feroz Shah Tughlaq. He was a ruler of the Tughlaq dynasty known for his orthodox religious policies. Feroz Shah Tughlaq explicitly imposed the Jizya tax on Brahmins, overturning the previous exemption and making them liable for the tax, which was a significant policy change during his reign.

Muhammad Tughlaq is incorrect; he was known for his administrative experiments and controversial policies, but not this specific tax imposition on Brahmins. Alauddin Khilji is incorrect; he was famous for his market reforms and military campaigns, not for extending Jizya to Brahmins. Balban is also incorrect; he was a powerful Mamluk ruler who consolidated the Sultanate but did not implement this particular tax policy.

The ear is a complex sensory organ responsible for both hearing and balance, divided into outer, middle, and inner sections. Hearing involves the conversion of sound waves into electrical signals that the brain can interpret.

• The correct answer is A: Cochlea. The cochlea is a spiral-shaped, fluid-filled structure in the inner ear containing the Organ of Corti. This organ houses thousands of tiny hair cells that convert mechanical vibrations into electrical nerve impulses, which are then transmitted to the brain for sound perception.
• B: Ossicle refers to the three small bones (malleus, incus, stapes) in the middle ear that amplify and transmit vibrations, but they don't perform the actual hearing transduction.
• C: Pinna is the visible outer part of the ear that collects and funnels sound waves into the ear canal.
• D: Eardrum (tympanic membrane) vibrates in response to sound waves, initiating the transmission process to the ossicles, but it does not convert vibrations into neural signals.

The question asks about assessment carried out throughout a course. Formative assessment is the correct answer. This type of assessment is designed to monitor student learning during instruction, providing ongoing feedback that can be used by instructors to improve their teaching and by students to improve their learning. It is 'for learning,' helping to 'form' understanding.

• Examples include quizzes, homework, class discussions, and drafts of assignments.
• Diagnostic assessment is conducted *before* instruction to assess prior knowledge and identify learning gaps.
• Initial assessment is synonymous with diagnostic, referring to assessment at the beginning.
• Summative assessment is conducted *at the end* of a course or unit to evaluate overall learning against a standard, such as final exams or major projects.

This question asks to identify the author of the renowned Urdu novel "نادار لوگ" (Nadar Log), which translates to "Destitute People." The novel is celebrated for its profound social commentary and realistic portrayal of human struggles.

• The correct answer is C: عبد الله حسین (Abdullah Hussain). Abdullah Hussain was a highly acclaimed Pakistani Urdu novelist and short story writer. "نادار لوگ" is one of his significant works, known for its exploration of themes like poverty, social injustice, and the human condition, reflecting his distinctive literary style.
• A: علیم اختر (Aleem Akhtar) is not recognized as the author of this particular novel.
• B: پر نام چند (Premchand) was a legendary Indian writer, primarily known for his Hindi and Urdu short stories and novels, but he did not write "نادار لوگ."
• D: اپنی خیر احمد (Ahmad Nadeem Qasmi) was a prominent Pakistani Urdu poet, short story writer, and journalist, but he is not the author of "نادار لوگ."

A syllabus is a crucial document that provides a comprehensive outline of a specific academic course. It details the topics to be covered, learning objectives, required readings, assignments, grading criteria, and important policies. It serves as a contract between the instructor and students, setting expectations for the course.

• Outline is too general; while a syllabus contains an outline, the term itself doesn't specifically refer to a course document.
• Curriculum is a broader term, encompassing the entire set of courses and educational content offered by a school or program, not just a single course.
• Student refers to an individual enrolled in a course and is irrelevant to the subject matter of the question.

Therefore, 'Syllabus' is the most accurate term for an outline of subjects covered in a specific course.

Proverbs are concise, popular sayings that express a general truth or piece of advice. The proverb

The invention of plastic marked a revolutionary advancement in materials science, leading to the development of countless modern products. The first fully synthetic plastic was a significant breakthrough.

• The correct answer is B: Leo Baekeland. In 1907, Leo Baekeland, a Belgian-American chemist, invented Bakelite. This was the world's first fully synthetic plastic, meaning it was entirely man-made and not derived from natural polymers. Bakelite was durable, heat-resistant, and electrically non-conductive, quickly finding widespread applications in electrical insulation, car parts, and various consumer goods, thus pioneering the plastics industry.
• A: Louis Pasteur was a French chemist and microbiologist famous for pasteurization and germ theory, not plastic.
• C: Robert Bunsen was a German chemist known for the Bunsen burner and his work in spectroscopy.
• D: Amedee Avogadro was an Italian scientist known for Avogadro's number and his contributions to molecular theory.

The Earth's atmosphere contains various gases that absorb different wavelengths of solar radiation. Water vapor is the most significant natural greenhouse gas and a primary absorber of infrared (IR) radiation emitted by the sun and re-radiated from Earth's surface. Its molecular structure allows it to efficiently absorb and re-emit IR energy, playing a crucial role in the planet's heat budget and the greenhouse effect.

• Violet is a color in the visible light spectrum, not a gas that absorbs infrared radiation.
• Carbon dioxide is indeed a major greenhouse gas and absorbs infrared, but water vapor generally accounts for a larger share of atmospheric IR absorption.
• Ozone primarily absorbs harmful ultraviolet (UV) radiation in the stratosphere, protecting life on Earth, rather than being the main absorber of solar infrared.

The idiom “Take someone’s word for it” means to accept what someone says as true without requiring additional proof or verification. It signifies a level of trust in the speaker's honesty, accuracy, or knowledge regarding a particular matter. When you take someone's word for it, you are essentially relying on their statement as fact.

Therefore, A: Believe what someone says is the accurate meaning. B: Disbelieve is the direct opposite, implying a lack of trust or a need for evidence. C: Alleged person refers to someone accused of an offense but not yet proven guilty, which is entirely unrelated to the concept of believing a statement. This idiom is fundamental to understanding trust in communication.

Goitre is a medical condition characterized by an abnormal enlargement of the thyroid gland, which is located in the neck. The thyroid gland plays a crucial role in producing hormones essential for metabolism, growth, and development.

• The correct answer is B: Iodine. Deficiency of iodine is the most common cause of goitre worldwide. The thyroid gland requires iodine to synthesize thyroid hormones (thyroxine and triiodothyronine). When iodine intake is insufficient, the thyroid gland attempts to compensate by growing larger to capture more available iodine, leading to the characteristic swelling known as goitre.
• A: Potassium is an essential electrolyte, but its deficiency does not directly cause goitre.
• C: Protein deficiency can lead to various nutritional problems, but it is not the primary cause of goitre.
• D: all is incorrect because only iodine deficiency is the direct and primary cause among the given options.

SPSS is a widely recognized and utilized software package for statistical analysis. Its full form is Statistical Package for Social Sciences. Developed by IBM, it is extensively used across various fields, particularly in academic research, market research, and health sciences, for data management, advanced analytics, and reporting. The software provides a user-friendly interface for performing complex statistical procedures.

• Statistical Package for Social Studies is incorrect; 'Studies' is not the precise term in the official acronym.
• Statistical Package for Sampling Studies is also incorrect; while sampling is part of statistics, it doesn't represent the full scope of SPSS's capabilities or its official name.
• Statistical Package for Social Service is inaccurate; 'Service' is not part of the correct expansion.

Korfball is a unique team sport specifically designed to be played with mixed-gender teams. Its rules mandate that each team on the court must consist of an equal number of male and female players, typically two men and two women in each section of the court. This fundamental aspect promotes equality and cooperation, making it distinct from many other sports.

While A: Tennis, C: Volleyball, and D: Cricket can be played in mixed formats recreationally or in specific doubles events, their primary competitive structures and traditional forms are typically single-gender. Korfball stands out as a sport where mixed-gender participation is an inherent and defining characteristic of the game itself.

An antonym is a word that has the opposite meaning of another word. Understanding antonyms helps in expanding vocabulary and comprehending nuances in language.

• The correct answer is A: Active. The word "dormant" means inactive, in a state of temporary inactivity, or not currently growing or developing. For example, a dormant volcano is not erupting, and dormant seeds are not germinating. Therefore, the direct opposite of being inactive or suspended is being Active, meaning engaged in action, moving, or functioning.
• B: Transient means lasting only for a short time; impermanent. This is not the opposite of dormant, as something dormant can be either transient or prolonged.
• C: Permanent means lasting or intended to last indefinitely. This describes duration, not the state of activity, and is not the antonym of dormant.
• D: all is incorrect because only "Active" serves as the direct antonym for "dormant."

The Liaquat-Nehru Pact, also known as the Delhi Pact, was a significant bilateral agreement signed between India and Pakistan in 1950. This pact was signed on April 8, 1950, by the then Prime Ministers of India, Jawaharlal Nehru, and Pakistan, Liaquat Ali Khan. Its primary objective was to ensure the protection and rights of minorities in both countries, particularly in the aftermath of the communal violence that followed the Partition of India in 1947.

• The years 1964, 1965, and 1966 are incorrect. These years fall much later than the actual signing of the pact, which was a foundational agreement in the early years of both nations.

The short-term memory of a computer is known as A: RAM (Random Access Memory). RAM is volatile memory, meaning it temporarily stores data that the CPU (Central Processing Unit) is actively using or needs quick access to. This allows for rapid reading and writing of data, crucial for the computer's operational speed and multitasking capabilities. However, all data stored in RAM is lost when the computer is powered off.

B: ROM (Read-Only Memory) stores permanent, non-volatile instructions essential for booting the computer. C: Floppy disks are outdated, external, non-volatile storage. D: Hard Disk drives provide long-term, non-volatile storage for the operating system, applications, and user files, not for active, temporary processing data.

The CPU, or Central Processing Unit, is often referred to as the 'brain' of a computer. It is responsible for executing instructions, performing calculations, and managing the overall flow of data within the system. Understanding its full form is fundamental to computer literacy.

• A: Central Processing Unit is the correct and universally accepted full form of CPU. It accurately describes its central role in processing information.
• B: Computer Process is too vague and not the correct acronym. While the CPU is involved in computer processes, this is not its name.
• C: Computer Protection Unit is incorrect. The CPU's primary function is processing, not protection, which is typically handled by security software or hardware.
• D: None is incorrect because option A is accurate.

Windows 10 is a prime example of an operating system (OS). An operating system is fundamental system software that manages computer hardware and software resources. It provides common services for computer programs and acts as an intermediary between the user and the computer's hardware, allowing other software to run and users to interact with the machine.

• Type of computer is incorrect; Windows 10 is software, not a physical computer.
• Utility software performs specific tasks to maintain the computer (e.g., antivirus, disk defragmenter), but an OS is the core system that enables all other software.
• Application software (e.g., web browsers, word processors) runs *on* an operating system to perform user-specific tasks, whereas the OS itself is the foundational layer.