List of top Chemistry Questions

If a beam of light is passed through true solution, it is
Which of the following is the anhydride of sulphuric acid?
About 20 km above the earth, there is an ozone layer. Which one of the following statements about ozone and ozone layer is true?
Which of the following protein destroy the antigen when it enters in body cell?
500 mL of nitrogen at $27^\circ C$ is cooled to $-5^\circ C$ at the same pressure. The new volume becomes

The oxide which cannot act as a reducing agent is

The $\alpha$-D-glucose and $\beta$-D-glucose differ from each other due to difference in carbon atom with respect to its
Phenol, p-Methylphenol, m-Nitrophenol and p-Nitrophenol follows order of increasing acidic strength
Sodium is made by the electrolysis of a molten mixture of about 40% NaCl and 60% $CaCl_2$ because
Uncertainty in position of an electron (mass of an electron is =$9.1\times10^{-28}g)$ moving with a velocity of $3 \times 10 ^4$ cm/s accurate upto 0.001% will be (use $\frac{h}{4\pi}$ in uncertainty expression where $h = 6.626 \times 10^{-27}$ erg s)
Which of the following statements about enzymes are true?
The electronic configuration of an element is $1s^2,2s^2 2p^6,3s^2 3p^3$. What is the atomic number of the element, which is present just below the above element in the periodic table?
The figure indicates the energy level diagram of an atom and the origin of six spectral lines in emission (e.g. line no. 5 arises from the transition from level B to A). Which of the following spectral lines will occur in the absorption spectrum?
Which has most stable +2 oxidation state?
The internal energy of one mole of ideal gas is
Which of the following complex has square planar structure?
Which of the following does not belong to first transition series ?
Maximum covalency of an element of atomic number $7$ is
Isotonic solutions have same

What is molarity of pure water?

Which of the following method is used for measuring the osmotic pressure of the solution
The equivalent weight of oxygen, when it is converted to oxide is equal to
The IUPAC name of the compound having the formula $CCl_3CH_2CHO$ is
In $N_{2}+3 H_{2} \to 2 NH_{3}$ reversible reaction, increase in pressure will favour
In which of the following reaction $K_p > K_c$ ?