Explore detailed subject-wise solutions to previous years’ questions (PYQs) from major competitive exams like SSC, NTPC, and state-level exams. Whether it’s Biology, Physics, Chemistry Indian Geography, Indian History, or General Awareness, find step-by-step solutions for each subject to enhance your exam preparation. Perfect for aspirants looking to master specific topics and improve accuracy in solving real exam questions.
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The correct answer is C. Lubricant. Lubricants are not typically found in toothpaste. They are used in machinery and other products to reduce friction between moving parts, but they are not needed in toothpaste.
The correct answer is A. Deliquescence.. Deliquescence is the process where certain substances absorb moisture from the air until they dissolve in the absorbed water and form a solution.
Question 2: Quartz used in clocks is ______ [RRB NTPC 19th April 2016 Shift 1] A. Nitrogen SilicateB. Silicon DioxideC. Sodium SilicateD. Calcium Silicate Explore All Chemistry PYQs Explore All RRB NTPC PYQs Answer: B. Silicon Dioxide Detailed Solution: Quartz is a type of mineral that is mainly made of Silicon Dioxide (SiOâ‚‚). This mineral … Read more
Methane is known as Marsh gas. Methane is also a greenhouse gas that contributes to global warming, as it traps heat in the atmosphere.
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