Identify solvent and solution from the given solution. Pumic stone, Brass, Iodine in air, Oxygen in water, Chloroform in Nitrogen.

In laboratory solvent can be separated from solute by the

Partial pressure of solvent in solution of non-volatile solute is given by equation,

Select the correct option from the given alternatives:The number of principal solution of sinx = 0 is

A laser beam enters from air to soap solution in water then

Answer the following question : Classify the following into solution suspension and colloids: Milk, sand in water, lemonade, smoke, oxygen in water.

Use your brain power! Can you tell : The names of four fatty acids separated from vegetable oils are given in the table. Identify the number of carbon - carbon double bonds from their structure and molecular formula from the below fatty acids which one when reacts with iodine will make the colour of iodine disappear.

Answer the given question : Name any four solutes and solvents.

Bring ‘active dry yeast’ from the market. Mix a spoonful of yeast, two poonfuls sugar with «sufficient quantity of lukewarm water in a bottle. Fix a colourless, transparent balloon on the mouth of that bottle. Take a drop of the solution from the bottle on a glass slide, put a cover -slip over it and observe it under the compound microscope. Store the solution in the bottle carefully.

Complete the paragraph by choosing the approprite words given in the brackets: Complete the papragraph using proper words: (mechanical, Rhizobium, aquatic, Toxic, co_2 Nitrogen, Pseudomonas, Amoeba, bacteria, hydrocarbons) Spilling of petroleum oil occurs in ocean due to various reasons. This oil may prove fatal and toxic to organisms. It is not easy to remove the oil layer from surface of water by ............. method. However, bacteria like ................ spp. and Alcanovorax borkumensis have the ability to destroy the pyridines and other chemicals. Hence. these ................ are used to clear the oil spills. These are called hydrocarbonoclastic bacteria (HCB). HCB decompose the ....--.----- and bring about the reaction of carbon with oxygen. ...--------- and water is formed in this process.

Select the correct option from the given alternatives: A trigonometric equation is called principal solution if A) 0 le alpha lt 2pi B) -2pi le alpha lt 2pi C) -frac{pi}{2} le alpha lt frac{pi}{2} D) 0 lt x lt 2pi