List of top Chemistry Questions

$Cl_2$ gas is dried over

Cl, Br, I, if this is Dobereiner?? triad and the atomic masses of Cl and I are 35.5 and 127 respectively the atomic mass of Br is -

Choose the correct option from the following :

Choose the biodegradable pollutant out of the following:

Chloroform on warming with Ag powder gives

Chloromethane on treatment with excess of ammonia yields mainly

Chlorobenzene on treatment with acetyl chloride and anhyd. $ {AlCl_3}$ gives

Chloroform and conc. $ {HNO_3}$ react to produce

Chloroform on treatment with conc. $ {HNO_3}$ gives

Chlorofluorocarbon releases a chemical harmful to ozone

Chlorobenzene can be converted into phenol by heating in aqueous sodium hydroxide solution at a temperature of $623 \,K$ and a pressure of $300\,atm$. However the rate of reaction can be increased by presence of certain groups in benzene ring. What will be the order of reactivity of following compounds towards the above substitution reaction?

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Chlorobenzene is formed by reaction of chlorine with benzene in the presence of $AlCl_3$. Which of the following species attacks the benzene ring in this reaction?

Which of the following is correct ?

Chlorobenzene on heating with NaOH at 623 K gives:

Chlorine reacts with sodium hydroxide under various conditions to give

Chlorine gas is passed into a solution of KF, KI and KBr and $CHCl_{3}$ is added. There is a colour in $CHCl_{3}$ layer. It is due to

Chlorination of methane does not occur in dark because

Chief use of methylated spirit is

Chloramphenicol is an

Chlorination of alkanes is a photochemical process. It is initiated by the process of

Chemical method used in concentration of ore is known as-

Chemisorption involves formation of bond between gaseous molecules or atoms and the solid surface for which high energy is required. Thus it is also referred as

$ {CH_3CH = CHCHO}$ is oxidised to $ {CH_3CH = CHCOOH}$ using

$-CH_2OH$ is the functional group of

$CH_3CH_2OH$ can be converted into $CH_3CHO$ by