4261. The variety of coal in which the deposit contains recognizable traces of the original plant material is_______?
✅ D. peat
Everyday Science MCQs – Page 214
4262. Electron was discovered by?
✅ D. J.J Thomson
4263. Periodontics deals with ________?
✅ D. Dentistry
4264. A moderator is used in nuclear reactor in order to ?
✅ A. Slow down the speed of the neutrons
4265. 746 watts are equivalent to________?
✅ C. 1HP
4266. Sericulture is the study of which discipline ?
✅ B. silk production
4267. Which of the following are the ingredients of gun metal?
✅ D. Copper, Tin and Zinc
4268. The most dense and heaviest planet is______?
✅ A. Earth
4269. When a warm air is lifted off the surface in temperature depression it is called ___?
✅ B. An occlusion
4270. The large dark patches on the Moon’s surface are known as______?
✅ A. Maria, or seas, even though there is no water on the Moon
4271. NASA scientists have recently detected water vapor on which Jupiter’s moon?
✅ A. Europa
4272. Vitamin A is found in the_______?
✅
4273. The chemical name of quartz is:
✅ B. Silicon Dioxide
4274. Brass gets discoloured in air because of the presence of which of the following gases in air ___ ?
✅ D. Hydrogen sulphide
4275. What kind of weathering takes place on the valley side above the surface of the glacier?
✅ D. Frost shattering
4276. Water vapor is ____?
✅ B. A gas
4277. speed of sound in dry air at 20 °C is______?
✅ C. 343 m/s
4278. Which of the following is commonly called a polyamide ?
✅
4279. For water purification, we use?
✅ B. Chlorine
4280. What is the weight of the average human brain?
✅ B. 1.2 to 1.4 Kg