MnO₂ + x HCl → MnCl₂ + y H₂O + z Cl₂
In order to balance the above chemical equation, the values of x, y and z respectively are : a) 6, 2, 2 b) 4, 1, 2 c) 4, 2, 1…
In domestic electric circuits the wiring with 15 A current rating is for the electric devices which have
https://youtu.be/InsmjBcIrY0 higher power ratings such as geyser. lower power ratings such as fan. metallic bodies and low power ratings. non-metallic bodies and low power ratings. This question is about which…
If four identical resistors, of resistance 8 ohm, are first connected in series so as to give an effective resistance Rs, and then connected in parallel so as to give an effective resistance Rp, then the ratio Rp/Rs is
https://www.youtube.com/watch?v=Z0XB7oLo8ww options 32 2 0.5 16 The question is about resistors connected in series and parallel. It asks for the ratio of the effective resistance when the resistors are connected…
The emission of brown fumes in the given experimental set-up is due to
https://youtu.be/YwyP-bDU6Tk thermal decomposition of lead nitrate which produces brown fumes of nitrogen dioxide. thermal decomposition of lead nitrate which produces brown fumes of lead oxide. oxidation of lead nitrate forming…
In the experimental setup given below, it is observed that on passing the gas produced in the reaction in the solution X, the solution X first turns milky and then colourless.
https://youtu.be/V6Hg_xyNO_k The option that justifies the above stated observation is that 'X' is aqueous calcium hydroxide and (a) it turns milky due to carbon dioxide gas liberated in the reaction…
