List of practice Questions

For the electrode $H_{(a q)}^{+} \mid H_{2_{(g)}}$, if $pH$ is decreased by one unit at $25^{\circ} C$, then the cell potential
Monoclinic crystal has dimension
Yeast is used in the production of
The solution of differential equation $x \frac {dy}{dx}+2y=x^2$ is
The smallest unit of measurement of cellular components is
The shortest wavelengths of Paschen, Balmer and Lyman series are in the ratio
The set of values of $ x $ for which $ \frac{tan 3x - tan 2x}{1+ tan 3x\,tan2x} = 1 $ is
The relationship between osmotic pressure at $273\, K$ when $10\, g$ glucose $(p_1), \,10\, g$ urea $(p_2)$ and $10\, g$ sucrose $(p_3)$ are dissolved in $250\, mL$ of water, is
The Nobel prize for study of communication methods of honey bees was given to
The lumbar region of the vertebral column in man is made up of
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 half-life of radium is $1600$ years. What is the fraction of sample undecayed after $6400$ years?
Fundamental frequency of a sonometer wire is $n$. If the length and diameter of the wire are doubled keeping the tension same, then the new fundamental frequency 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 following figure given below is a diagrammatic representation of organismic response to abiotic factors. What do (a), (b) and (c) represent respectively?
The first trophic level in an ecosystem consists of
The first carbon dioxide fixation product of C plants is
The enzyme that is not present in succus entericus is
The central, structural atom in the primary photosynthetic pigment is
Select the incorrect match out of the following.
Secretion of which of the following is under the control of neurosecretory nerve cells?
Schrodinger wave equation, for a particle in a one dimension box is
Persons suffering from sickle cell anaemia normally suffer from
$ {Pb_3 O_4 + 4HNO_3 -> 2Pb(NO_3)_2 + PbO_2 + 2H_2O }$ Which is true about the lead ions in $ {Pb_3O_4}$ ?
Papaya is a dioecious plant. This condition prevents