Justify giving reactions that among halogens, fluorine is the best oxidant and among hydrohalic compounds, hydroxodic acid is the best reductant.

The strongest acid among the following compound is

Which among the following is the best domestic fuel?

Among hydrides of halogens predict the hydride having most acidic.

Give reasons for following sequence. NAD helps in oxidation reduction reactions.

An organic compound A on reduction gives compound B, which on reaction with trichloromethane and caustic potash forms C. The compound 'C' on catalytic reduction gives N-methyl benzenamine, the compound 'A' is

Solid calcium oxide reacts vigourously with water to form calcium hydroxide accompanied by liberation of heat. This process is called slaking of lime. Calcium hydroxide dissolves in water to form its solution called lime water. Which among the following is true about slaking of lime and the solution formed? (i) It is an endothermic reaction (ii) It is an exothermic rection (iii)The pH of the resulting solution will be more than seven (iv)The pH of the resulting solution will be less than seven

Which among the following compound will give offensive compound when heated with chloroform and alcoholic potassium hydroxide ?

A black compound of manganese reacts with a halogen acid to give greenish yellow gas. When excess of this gas reacts with NH_3 an unstable trihalide is formed. In this process the oxidation state of nitrogen changes from _________ .