List of practice Questions

Sodium pyrophosphate is represented by which of the following formula?

Which of the following as a living fossil?

The amphibians of plant kingdom are:

Pollination of Cycas is done by

Which moss is known as peat moss ?

Nonflowering plants are called

Calyptra is derived from

Medicine for curing respiratory problems is obtained from

'Club moss' belongs to

Cycas belongs to gymnosperms due to

Funaria differs from Pteridium is absence of

The timber yielding plant Shorea robusta belongs to the family:

Which of the following statements is incorrect?

Density of a 2.05 M solution of acetic acid in water is 1.02 g/mL. The molality of the solution is:

A charge $Q$ is distributed uniformly in a sphere (solid). Then, the electric field at any point $r$, where, $r < R(r$ is the radius of sphere) varies as:

A sphere encloses an electric dipole within it. The total flux across the sphere is

A conducting sphere of radius R carrying charge +Q is connected to an uncharged conducting sphere of radius 2R. The charge that flows between them is

The angle between the dipole moment and electric field at any point on the equatorial plane is

The spatial distribution of the electric field due to two charges $(A, B)$ is shown in figure. Which one of the following statements is correct?

Which of the following plots represents the variation of the electric field with distance from the centre of a uniformly charged non-conducting sphere of radius $R$ ?

What is the angle between the electric dipole moment and the electric field strength due to it on the equatorial line?

Let W denote the words in the English dictionary. Define the relation $R $ by : $R =\{ (x,y), \in\, W \times \,W$ : the words $x$ and $y$ have at least one letter in commona$\}$ Then R is

The excess pressure in a bubble of radius R of a gas in a liquid of surface tension S is

Which of the following molecules/ions does not contain unpaired electrons ?