List of practice Questions

Light of wavelength 500 nm is incident on a metal with work function 2.28 eV. The de Broglie wavelength of the emitted electron is
Magnetic moment 2.84 B.M. is given by (At. nos, Ni=28, Ti=22, Cr=24, Co=27)
Which of the following are most suitable indicators of SO2 pollution in the environment?
Male gametes are flagellated in
Match each disease with its correct type of vaccine.
Metagenesis refers to
Most animals are tree dwellers in a
Multiple alleles are present
Nitrogen dioxide and sulphur have some properties in common. Which property is shown by one of these compounds, but not by the other?
Perigynous flowers are found in
Pick up the wrong statement.
Roots play insignificant role in absorption of water in
Select the wrong statement.
Sliding filament theory can be best explained as
The enolic form of ethyl acetoacetate as below has
The enzyme that is not present in succus entericus is
The fundamental frequency of a closed organ pipe of length $20\,cm$ is equal to the second overtone of an organ pipe open at both the ends. The length of organ pipe open at both the ends is
The guts of cow and buffalo possess
The heart of a man pumps $5$ litres of blood through the arteries per minute at a pressure of $150 \,mm$ of mercury. If the density of mercury be $13.6 \times 10^3$ $kg/m^3$ and $g$ = $10\, m/s^2$ then the power
The hybridization involved in complex $ {[Ni(CN)4]^{2-}}$ is (At.No. Ni = 28)