Questions

Fractional distillation is the process of seperation of a mixture of two or more liquids into the different fractions, which differ fairly widely in their boiling points. The liquid with a lower boiling point will be vaporized first and hence would be the distillate (first fraction). Eg. Ethyl alcohol has a boiling point of 78.10C and water 1000C. When a mixture of these two liquids is heated, alcohol vaporizes first and is collected separately as the distillate. 

The card was established by Frank McNamara and Ralph Schneider.

True, Water is a Pure substance and not a mixture.

We know that, A mixture is when two or more substances combine physically together. You can find that the mixture retains the properties of the original components.

In water, two hydrogen atoms combine with one oxygen atom chemically, forming a new substance that has properties different from hydrogen alone or oxygen alone.

Therefore, water is not a mixture; it is a compound and it is pure.

They are the sites at which microtubules attach to chromosomes.

India has been ranked 45th, down four notches from last year, in terms of competitiveness in the annual rankings compiled by IMD which saw Hong Kong topping the list. US was “pushed out” of the top three slots while Hong Kong consolidated its dominance of the annual rankings for the second year in the list compiled by the International Institute for Management Development’s (IMD) World Competitiveness Center.