List of practice Questions

Vegetative propagation in mint occurs by

Coiling of garden pea tendrils around any support is an example of

The dimension of $\frac{1}{2}\varepsilon _0 E^2$, where $\varepsilon _0$ is permittivity of free space and $E$ is electric field, is

The cavity contained in Graafian follicle is

Male and female gametophytes are independent and free-living in

Kranz anatomy is one of the characteristics of the leaves of

The device that can act as a complete electronic circuit is

The potential difference that must be applied to stop the fastest photo electrons emitted by a nickel surface, having work function $5.01\, eV$, when ultraviolet light of $200 \,nm$ falls on it, must be

The pressure exerted by $6.0 \, g$ of methane gas in a $0.03\, m^3$ vessel at $129^{\circ}C$ is (Atomic masses : $C = 12.01, H = 1.01 $ and $R = 8.314 \, JK^{-1} mol^{-1}$)

In a sample of radioactive material, what fraction of the initial number of active nuclei will remain disintegrated after half of a half-life of the sample?

In the figure below, the capacitance of each capacitor is $3 \mu F$. The effective capacitance between $A$ and $B$ is :

Three moles of an ideal gas expanded spontaneously into vaccum. The work done will be

Standard entropies of $X_2 ,Y_2$ and $XY_3$ are $60 , 40 $ and $ 50 \, JK^{-1} mol^{-1}$ respectively. For the reaction $ { \frac{1}{2} X_2 + \frac{3}{2}Y_2 <=> XY_3, \Delta H = -30 kJ}$ to be at equilibrium, the temperature should be

The reaction of toluene with $Cl_2$ in the presence of $FeCl_3$ gives 'X' and reaction in presence of light gives 'Y' Thus, 'X' and 'Y' are

A square current carrying loop is suspended in a uniform magnetic field acting in the plane of the loop. If the force on one arm of the loop is $\overrightarrow{F}$ .the net force on the remaining three arms of the loop is

Which one of the following is not used in organic farming ?

Given are cyclohexanol (I), acetic acid (II), 2, 4, 6-trinitrophenol (III) and phenol (IV). In these, the order of decreasing acidic character will be

The first order integrated rate equation is

A light ray going from air is incident (as shown in figure) at one end of a glass fibre (refractive index $ \mu = 1.5$) making an incidence angle of $60^\circ$ on the lateral surface,

so that it undergoes a total internal reflection. How much time would it take to traverse the straight fibre of length 1 km?

A particle of mass $2 \times 10^{-3}$ kg, charge $4 \times 10^{-3}$ C enters in an electric field of 5 V/m, then its kinetic energy after 10 s is

In unilocular ovary with a single ovule the placentation is

Transport of food material in higher plants takes place through

Keel is characteristic of the flowers of

Study the cycle shown below and select the . option which gives correct words for all the four blank A, B, C and D.

Algae have cell wall made up of