If an explosion takes place at the bottom of a lake,what will be the nature of shock wave produced in water?

What is the temperature at the bottom of a lake when water gets frozen with -ve temperature in the- atmosphere?

What happens when blood cells are placed in pure water?

A coin is placed at the bottom of a beaker containing water (refractive index =4/3) to a depth of 12cm. By what height the coin appears to be raised when seen from vertically above?

In which of the following does adsorption takes place and why? Anhydrous CaCl_2 placed in the atmosphere saturated with water.

A closed bottle containig water 30°C is carried to the moon in sa spaceship.If it is placed on the surface of the moon,What will happen to the water as soon as the lid is opened?

The Marina trench is located in the Pacific Ocean, and at one place it is nearly eleven km beneath the surface of water. The water pressure at the bottom of the trench is about 1.1 xx 10^8 Pa. A steel ball of initial volume 0.32 m3 is dropped into the ocean and falls to the bottom of the trench. What is the change in the volume of the ball when it reaches to the bottom?

In operation of a galvanic cell, at one of its electrodes oxidation takes place. What is the name of this electrode and what is its polarity?