The octane number indicates a fuel’s resistance to knocking in engines. Higher octane number fuels resist pre-ignition better under compression. Knocking occurs when fuel ignites prematurely in the engine cylinder. Iso-octane is assigned an octane number of 100 as a standard reference. n-Heptane is assigned an octane number of 0 as it ignites easily. The …
1. Match the following: List – I (Authors) A. L. Basham Donald E. Smith Rudolph & Rudolph W. H. Morris Jones List – II (Books) a) India as a Secular State b) The Wonder That Was India c) Government and Politics of India d) In Pursuit of Lakshmi Choose the Correct Codes: (A) b a …
OPSC OAS Question Paper 2025 Prelims GS Paper [Fully Solved] Read More »
To identify the presence of major nutrients such as carbohydrates, proteins, and fats in food samples, specific chemical tests are used. These tests are based on characteristic colour changes when the nutrient reacts with a particular reagent. Such tests help in understanding the composition of food and are widely used in school laboratories, nutrition studies, …
Protection of electrical power systems is essential to ensure reliability, safety, and continuity of supply. As power networks become more complex and heavily loaded, the need for fast, selective, and accurate fault detection becomes critical. Protective relays are the core components of modern protection schemes. They continuously monitor system parameters and initiate isolation of faulty …
1 Select the correct meaning of the idiom underlined below: The singer was not in voice. (A) Lost voice (B) To sing well (C) Had a cough (D) Sang well Answer: (A) Lost voice Explanation: “Not in voice” means the singer is unable to sing properly, often due to hoarseness or vocal strain—essentially, they’ve lost …
1. Which of the following is/are component/s of Rashtriya Uchchatar Shiksha Abhiyan (RUSA) (Now PM-USHA)? a. Conversion of colleges to cluster universities. b. Infrastructure grants to universities. c. Vocationalisation of higher education. d. Institutional restructuring and reforms. e. Supporting foreign universities/institutions to setup campus in India. (1) a and b (2) b and c (3) …
MPSC State Services Main Examination 2023- General Studies Paper 3 [Solved] Read More »
Download Question Paper Download Answer Key 1. The elements of the basic structure of Constitution as declared by the Supreme Court in Minerva Mills case are A. Limited power of Parliament to amend the Constitution B. Judicial review C. Harmony and balance between Fundamental Rights and Directive Principles. D. Separation of powers (1) Only A, …
MPSC State Services Main Examination 2023- General Studies Paper 2 [Solved] Read More »
1. Maginot Line exists between which countries? (A) Namibia and Angola (B) France & Germany (C) U.S.A. & Canada (D) South Korea & North Korea Answer: (B) France & Germany Explanation: The Maginot Line was a line of defensive fortifications built by France along its border with Germany before World War II. It was intended …
BPSC 71 Prelims Exam Solved Question Paper [Exam Date: 13 Sept 2025] Read More »
1. What is the primary condition that must be satisfied for an oscillator circuit to sustain oscillations, in terms of voltage gain? A. The voltage gain of the amplifier must be greater than or equal to 1, and the phase shift around the loop must be 360° B. The voltage gain of the amplifier must …