Q1. Which hydro-electric project produces maximum power energy ? (a) Bhakra Nangal (b) Koyna (c) Hirakud (d) Salal (UPSC Prelims 1979) Answer: (a) Bhakra Nangal Explanation: The Bhakra Nangal project, located on the Sutlej River, is one of India’s largest hydro-electric power producers. It provides electricity, irrigation, and flood control, making it a key infrastructure …
Q1. Consumer welfare is indicated by (a) Savings (b) Disposable income (c) Expenditure (d) None of the above (UPSC Prelims 1979) Answer: (d) None of the above Explanation: Consumer welfare is best measured by access to quality goods and services at fair prices, consumer satisfaction, and protection from exploitation. While income and expenditure are economic …
Q1. Ajanta Caves are located in the State of (a) Maharashtra (b) Gujarat (c) Tamil Nadu (d) West Bengal (UPSC Prelims 1979) Answer: (a) Maharashtra Explanation: The Ajanta Caves, located in Maharashtra, are renowned for their ancient Buddhist rock-cut architecture and murals. These caves date back to the 2nd century BCE to 6th century CE, …
Q1. The bats can fly in the dark because (a) They have a better vision in the dark (b) The light startles them (c) They produce ultrasonics (d) None of the above Answer: (c) They produce ultrasonics Explanation: Bats use echolocation, emitting ultrasonic sound waves that bounce off objects and return to them. This allows …
Q1. Which of the following metals is used in the electromagnets ? (a) Soft iron (b) Stainless steel (c) Cobalt (d) Copper (UPSC Prelims 1979) Answer: (a) Soft iron Explanation: Soft iron is used in electromagnets because it has high magnetic permeability and low retentivity, allowing it to quickly gain and lose magnetism. This makes …
Q1. A ball bounces higher at high altitudes than in plains. This is because (a) The pressure on higher altitudes is lower than that in plains (b) Downward pull due to gravity is less at higher altitudes (c) The rarefied air offers less resistance to the ball (d) You become more energetic at hills, so …
Q49. An ordinary clock loses time in summer. This is because (a) The length of the pendulum increases and time period increases (b) The length of the pendulum increases and time period decreases (c) The length of the pendulum decreases and time period increases (d) The length of the pendulum decreases and time period decreases …
Q1. When light enters a closed room through a small hole in the door, the image of an outside building appears as inverted on the opposite wall. This is because (a) The hole acts as a convex lens (b) Light takes curvature at the edges of the hole (c) Of rectilinear propagation of light (d) …
Q1. One litre of cold air weighs heavier than the dry air (1 Lit) because of the (a) Increased number of collisions between the molecules (b) Increased number of molecules at low temperature (c) Greater energy of molecules at high temperature (d) Lower energy of molecules at high temperature Answer: (b) Increased number of molecules …