NEET Questions

Calculate the pH of $C{H_3}COOH$ solution, if equivalent conductance of $1M\,\,C{H_3}COOH$ is $10\,oh{m^{ - 1}}c{m^2}e{q^{ - 1}}$ and at infinite solution is $200\,oh{m^{ - 1}}c{m^2}e{q^{ - 1}}$ (Given : log 5 = 0.7)

Calculate the pH of $C{H_3}COOH$ solution, if equivalent conductance of $1M\,\,C{H_3}COOH$ is $10\,oh{m^{ - 1}}c{m^2}e{q^{ - 1}}$ and at infinite solution is $200\,oh{m^{ - 1}}c{m^2}e{q^{ - 1}}$ (Given : log 5 = 0.7)

The coefficient of volumetric expansion of mercury is $18 imes {10^{ - 5}}/{^0}C$. A thermometer bulb has a volume ${10^{ - 6}}{m^3}$ and cross section of stem is $0.004c{m^2}$. Assuming that bulb is filled with mercury at ${0^0}C$ then the length of the mercury column at ${100^0}C$ is

In DNA of certain organisms, guanine constitutes 20% of the bases. What percentage of the bases would be adenine?

In DNA of certain organisms, guanine constitutes 20% of the bases. What percentage of the bases would be adenine?

The surface area of a black body is $5 imes {10^{ - 4}}{{\rm{m}}^2}$ and its temperature is ${727^0}C$ . the energy radiated by it per minute is $(\sigma = 5.67 imes {10^{ - 8}}J{m^{ - 2}} - {s^{ - 1}} - {K^{ - 4}})$.

The surface area of a black body is $5 imes {10^{ - 4}}{{\rm{m}}^2}$ and its temperature is ${727^0}C$ . the energy radiated by it per minute is $(\sigma = 5.67 imes {10^{ - 8}}J{m^{ - 2}} - {s^{ - 1}} - {K^{ - 4}})$.

A ball is dropped from a height of 20 cm. Ball rebounds to a height of 10 cm. What is the loss of energy?

What is the pressure of 2 moles of $N{H_3}$ at $27^\circ C$ when its volume is 5 L in van der Waals’ equation $\left( {a = 4.17,b = 0.03711} \right)$

The reaction of white phosphorus with aqueous NaOH gives phosphine along with another phosphorus containing compound. The reaction type the oxidation states of phosphorus in phosphine and the other product are respectively :