List of top Chemistry Questions asked in KCET

Molarity of $0.2 \, NH_2SO_4$ is

An atom of an element $A$ has three electrons in its outermost orbit and that of $B$ has six electrons in its outermost orbit. The formula of the compound between these two will be

An emulsifier is a substance which

2 - Acetoxy benzoic acid is used as an :

When a mixture of methane and oxygen is passed through heated molybdenum oxide, the main product formed is :

The reaction,$2SO_{2(g)} + O_{2(g)} \leftrightharpoons 2SO_{3(g)}$ is carried out in a $1\, dm^3$ vessel and $2 \,dm^3$ vessel separately. The ratio of the reaction velocities will be :

The chemical equilibrium of a reversible reaction is not influenced by :

The metal which does not form ammonium nitrate by reaction with dilute nitric acid is :

In a galvanic cell, the electrons flow from :

In a mixture of acetic acid and sodium acetate the ratio of concentrations of the salt to the acid is increased ten times. Then the pH of the solution :

Benzoin is :

A nitrogen containing organic compound gave an oily liquid on heating with bromine and potassium hydroxide solution. On shaking the product with acetic anhydride, an antipyretic drug was obtained. The reactions indicate that the starting compound is :

Identify the gas which is readily adsorbed by activated charcoal

In the manufacture of ammonia by the Haber's process, ${N_{2(g)} +3H_{2(g)} <=> 2NH_{3(g)} + 92.3 kJ} $, which of the following conditions is unfavourable ?

Aluminium displaces hydrogen from dilute HCl whereas silver does not. The E.M.F. of a cell prepared by combining $Al /Al^{+3}$ and $Ag/Ag^{+}$ is $2.46\, V.$ The reduction potential of silver electrode is $+ 0.80\, V$. The reduction potential of aluminium electrode is :

In the electrolytic method of obtaining aluminium from purified bauxite, cryolite is added to the charge in order to :

When $50\, cm ^{3}$ of $0.2\, N$ $H_{2} SO _{4}$ is mixed with $50 cm ^{3}$ of $1 N\, KOH$, the heat liberated is :

Stainless steel does not rust because :

Select the $pK_a$ value of the strongest acid from the following :

The coal tar fraction which contains phenol is :

Which of the following is not an amphoteric substance ?

Temperature coefficient of a reaction is 2. When temperature is increased from 30$^\circ$C to 100$^\circ$C, rate of the reaction increases by

The concentration of electrolyte required to coagulate a given amount of $As_2S_3$ sol. is minimum in the case of :

The volume of water to be added to N/2 HCl to prepare $500 cm^3$ of N/10 solution is

The process by which protein synthesis takes place is based on genetic information is called