`underset("A show-stopper")`

You are provided with a glass stopper and a measuring cylinder. How will you proceed to find the density of stopper? Diagrams not required.

The diagram shows the structure of ethanoic acid . H-underset(H)underset(|)overset(H)overset(|)C-underset(O-H)underset(|)(C)=O How many moles of ethanoic react with one mole of magnesium ?

What is optical activity ? Which one of the following compounds shows optical isomerism ? Br-underset(CH_(3))underset(|)overset(H)overset(|)(C)-Br" " Br-underset(CH_(3))underset(|)overset(OH)overset(|)(C)-COOH

Arrange the following free radicals in order of stability underset(I)underset()("Beznyl"),underset(II)underset() (" Allyl"),underset(III)underset() (" Methyl"), underset(IV)underset()(" Vinyl",)

The IUPAC name of the compound underset(CN" ")underset(|" ")(CH_(2))-underset(CN" ")underset(|" ")(CH)-underset(CN" ")underset(|" ")(CH_(2)) is

Structures of glycine and alanine are given below. Show the peptide linkage in glycylalanine H_(2)N - underset("(Glycine)")(CH_(2)) - COOH, " " H_(2)N - underset(underset(CH_(3))(|))(CH) - underset("(Alanine)")(COOH)

Show that underset(x to 0)"Lt" e^(-1/x) does not exits.

In order to loosen a stopper from the neck of a glass bottle, boiling water is poured around the neck. Why?