Roentgen's discovery of X-rays Roentgen's discovery of X-rays :- In 1895, the German scientist Rontgen observed that when a fast moving cathode ray collides with a piece of metal having…
1. Which of the following are not state functions? (2008) (I) q + w (II) q (III) w (IV) H – TS (a) (I), (II) and (III) (b) (II)…
1. The correct option representing a Freundlich adsorption isotherm is (NEET 2019) (a) x / m = Kp0.3 (b) x / m = Kp2.5 (c) x / m =…
1. The reaction of C6H5CH=CHCH3 with HBr produces : (a) (b) (c) (d) 2.(1) Li (2) Na (3) K (4) Rb NEET-UG 2015 Chemistry Question Paper…
1. Which one is malachite from the following? (NEET 2019)(a) CuCO3.Cu(OH)2 (b) CuFeS2(c) Cu(OH)2 (d) Fe3O4 https://www.youtube.com/watch?v=fzyCAsILg4o2. Identify the incorrect statement. (NEET 2019)(a) The scientific and technological process used…
46. Consider the molecules CH4,NH3 and H2O. Which of the given statements is false?(1)The H – C – H bond angle in CH4, the H – N – H bond…