List of practice Questions

In cockroach, the ootheca is formed by the secretion of
In an isothermal process, there is
If a planet has twice the mass of earth and three times the radius $(R)$ of earth, then the escape velocity of the planet is ($\upsilon_e$ = escape velocity of earth)
If a fresh water protozoan is placed in marine water, then what change will be observed in its contractile vacuole?
G-6-P-D deficiency inheritance is an example of ______ inheritance.
For the redox reaction, ${ MnO_4^- + C2O4^{2-} + H+ ? Mn^{2+} + CO2 + H2O}$ .The correct stoichiometric coefficients of ${ MnO_4^-, C2O_4^{2-}}$ and ${H^+}$ are
First clinical gene therapy was performed to prevent development of
Deficiency of thyroxine in an adult causes a disease characterised by low BMR, low body temperature, scaly skin etc. The disease is
At $CMC$, the surfactant molecules undergo
All of the following are found in seminiferous tubules except
Aestivation of petals in the flower of cotton is correctly shown in
A stone tied at the end of a string 80 cm long is whirled in a horizontal circle with a constant speed. If the stone makes 25 revolutions in 14 s, what is the magnitude of acceleration of the stone ?
A tank full of water has a small hole at its bottom. If one-fourth of the tank is emptied in $t_1$ seconds and the remaining three fourths of the tank is emptied is $t_2$ seconds, then ratio $(t_1/t_2)$ is
A real gas behaves as an ideal gas,
A piece of brass (alloy of copper and zinc) weighs 12.9 g in air. When completely immersed in water it weighs 11.3 g. What is the mass of copper contained in the alloy ? (Specific gravities of copper and zinc are 8.9 and 7.1 respectively)
A particle is moving on a circular path of 10 m radius. At any instant of time, its speed is ${5\, m \, s^{-1}}$ and the speed is increasing at a rate of ${2\, m \, s^{-2}}$. The magnitude of net acceleration at this instant is
A galvanometer can be converted into a voltmeter by connecting a
A unit cell of diamond consists of
The volume strength of $3.0\, N\, H_2O_2$ is
Three centre - two electron bond is present in
In the $3^{rd}$ period, the first ionisation potential is of the order
In the periodic table, the period number corresponds to
A cross-linked polymer is
When concentration of carbon dioxide increases in blood, respiration becomes
Brunner?s glands are found in