Vidya and pratap went for a picnic. Their mother gave them a water bottle that contained 5 litres of water. Vidya consumed `frac{2}{5}` of the water. Pratap consumed the remaining water: What fraction of the total quantity of water did Pratap drink?

Vidya and pratap went for a picnic. Their mother gave them a water bottle that contained 5 litres of water. Vidya consumed frac{2}{5} of the water. Pratap consumed the remaining water: How much water did Vidya drink?

The capacity of a cuboidal tank is 50000 litres of water. Find the breadth of the tank if its length and depth are respectively 2.5 m and 10 m.

A litre of public water contains 5 mg of chlorine. The concentration of chlorine in ppm is

A solution containing 6 gm of a solute dissolved in 250 ml of water gave an osmotic pressure of 4.5 atmosphere at 27^(@)C . Calculate the boiling point of the solution. The molal elevation constant for water is 0.52

Nazima is fly fishing in a stream. The tip of her fishing rod is 1.8 m above the surface of water and the fly at the end of the string rests on the water 3.6 m away and 2.4 m from a point directly under the tip of the rod. Assuming that her rod to the fly) is taut, how much string does she have out(see fig)? If she pulls in the string at the rate of 5 cm per second, what will be the heriozontal distance of the fly from her after 12 seconds.

A hemispherical bowl has a radius of 3.5 cm What would be the volume of water it would contains?

If the density of some lake water is 1.2.5 g mL^(-1) and contains 92 g of Na^(+) ions per kg of water, calculate the molality of Na^(+) ions in the lake.

A cylinderical jar of diameter 12 cm contains water. Iron spheres, each of radius 1.5 cm, are immersed in water. How many such spheres are necessary to raise to level of water by 2 cm ?

Calculate the mole fraction of Ethanol (C_(2)H_(5)OH) in the solution containing 20 g of Ethanol and 100 g of water.