List of top Chemistry Questions

The prosthetic group present in glycoproteins is
The property of Rydberg constant is that
The property not common between $SO_2$ and $CO_2$ is
The properties of Zr and Hf are similar because :
The property of hydrogen which distinguishes it from alkali metal is
The product obtained by treating $ {CH_3 - CH = CH_2 + HBr -> ?}$
The process to remove unwanted impurities from the ore is called -
The process of vulcanization of rubber was introduced was
The process of removing lighter gangue particles by washing in a current of water is called
The process of extraction of metal from its ores, is known as -
The probability density plots of $1s$ and $2s$ atomic orbitals are given in figures.
The density of dots in a region represents the probability density of finding electrons in the region. On the basis of the above diagram, which of the following statements is incorrect?
The principle involved in paper chromatography is
The principal functional group in the compound $BrCH_2CH(OH)CH_2COCH_2NO_2$ is
The principal gas evolved from sludge digestion tank is
The primary valency of iron in $K_4[Fe(CN)_6$ is
The pressure-volume work for an ideal gas can be calculated by using the expression $W = - \int\limits^{V_{f}}_{V_i} P_{ex} \,dV$. The work can also be calculated from the $PV -$ plot by using the area under the curve within the specified limits. When an ideal gas is compressed $(i)$ reversibly or $(ii)$ irreversibly from volume $V_i$ to $V_f$. Choose the correct option.
The pressure o f a $1 : 4$ mixture of dihydrogen and dioxygen enclosed in a vessel is one atmosphere. What would be the partial pressure of dioxygen?
The point of temperature inversion between troposphere and ionosphere is called
The plant groups proposed by Aristotle in his classification were
The plant cell shrink when placed in a
The $_pK_a$ of acetylsalicylic acid (aspirin) is $3.5$.The $H$ of gastric juice in human stomach is about $2.3$ and the $pH$ in the small intestine is about $8$. Aspirin will be
The phenomenon in which adsorption and absorption takes place simultaneously is called
The pH range for phenolphthalein is
The pH value of 0.001 M aqueous solution of NaCl is
The pH of human urine is approximately