List of top Chemistry Questions asked in AFMC

Protein part of a Holoenzyme is called

During the formation of a chemical bond

What is the equivalent weight of $SnCl _{2}$ in the following reaction, $SnCl _{2}+C l_{2} \rightarrow S n C l_{4} ?$

What is the time (in sec) required for depositing all the silver present in $125\, mL$ of $1\, M \, AgNO _{3}$ solution by passing a current of $241.25 \, A$? ($IF = 96500$ coulombs)

$Mg ^{2+}$ is isoelectronic with

The correct order in which the first ionisation potential increases is

Hofmann's bromamide reaction is to convert

When conc. $H _{2} SO _{4}$ is heated with $P _{2} O _{5}$, the acid is converted into

Nitration of nitrobenzene at $125^{\circ} C$ with mixed acids gives

Ammonium ion is

One mole of oxygen at $273\, k$ and one mole of sulphur dioxide at $546 \,k$ are taken in two separate containers, then,

Aluminium oxide is not reduced by chemical reactions since

$ N_{2} $ gas will not be evolved upon reaction of $ HNO_3$ with which of the following amines?

The function of copper-\(T\) is to prevent

Which of the following has the highest electron affinity?

Number of atoms present in $4.25 \,g$ of $NH_3 $ is

If $1 \,mL$ of water contains $20$ drops then number of molecules in a drop of water is

In an experiment, $4 \,g$ of $ M_{2}O_{x} $ oxide was reduced to $2.8 \,g$ of the metal. If the atomic mass of the metal is $ 56\,g\,mol^{-1}, $ the number of $O$ atoms in the oxide is

Violet coloured complex obtained in the detection of sulphur is

Chemical formula of Prussian blue is

In an organic compound, phosphorus is estimated as

The heat liberated when $1.89\, g$ of benzoic acid is burnt in a bomb calorimeter at $25 ^{\circ} C$ increases the temperature of $18.94\, kg$ of water by $0.632^{\circ} C$. If the specific heat of water at $25^{\circ} C$ is $0.998\, cal/g$ the value of the heat of combustion of benzoic acid is

What will be the partial pressure of $He$ and $ O_{2} $ respectively, if $200\,mL$ of $He$ at $0.66 \,atm$ and $400 \,mL$ of $ O_{2} $ at $0.52 \,atm$ pressure are mixed in $400 \,mL$ vessel at $ 20^{\circ}C $ ?

Pure benzene freezes at $5.3^{\circ} C$. A solution of $0.223 \,g$ of phenylacetic acid $(C_6H_5CH_2COOH)$ in $4.4\, g$ of benzene $(h_f = 5.12\,kg\,mol^{-1})$ freezes at $4.47^{\circ} C$. From this observation, one can conclude that

Primary, secondary and tertiary amines can be distinguished by