List of practice Questions

Consider a car moving along a straight horizontal road with a speed of ${ 72\, km\, h^{-1}}$. If the coefficient of static friction between road and tyres is $0.5$, the shortest distance in which the car can be stopped is

Kepler's second law is a consequence of

Which of the following catalysts acts as a promoter in the manufacture of \({NH_3}\) by Haber's process?

Who coined the term ‘Species’?

A nucleus at rest splits into two nuclear parts having radii in the ratio 1:2. Their velocities are in the ratio

Diffraction pattern is obtained using red light. What will happen if it is replaced by violet light?
Copper is purified by electrolytic refining of blister copper. The correct statement(s) about this process is (are) :
Genetic engineered male sterile crop plants may be produced by inserting
i.$\quad$ They help in respiration ii.$\quad$ They help in cell wall formation iii.$\quad$ They help in DNA replication iv. $\quad$They increase surface area of plasma membrane Which of the following prokaryotic structures has all the above roles?
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