List of practice Questions

A (100 W, 200 V) bulb is connected to a 160 volts supply. The power consumption would be

Enzymes, in the living systems

A basic lining is given to a furnace by using

Which one of the following has the highest dipole moment?

In graphite, electrons are

Colour of light having maximum speed in air is

Two resistances $R_1$ and $R_2$ have effective resistance $R_s$ when connected in series and $R_p$, when connected in parallel. If $R_s R_p=16$ and $R_1/R_2=4$, calculate the values of $R_1$and $R_2$ (in units of resistance).

If $ {\varepsilon}_0 $ and $ {\mu}_0 $ are the electric permittivity and magnetic permeability in a free space, $ \varepsilon $ and $\mu $ are the corresponding quantities in medium, the index and refraction of the medium is

The process of zone refining is used in purification of

Ebonite is

Which of the following is an unsaturated acid ?

A point source of light produces an illumination $I$ at a point. When the distance between them is made four times its original value, the intensity at that point becomes

Calculate the current I in the circuit shown

The total number of orbitals in a shell can be given in the form of $n$. The principal quantum number is

Which one of the following is the strongest acid?

A dark pattern on a China dish appears brighter than the rest of the dish, when it is strongly heated and taken to a dark room. This is an illustration of

Evolutionary convergence is characterised by

In human beings, the eggs are

Which of the following is free-living aerobic and non-photosynthetic nitrogen-fixing bacterium?

Viruses possess

The embryonated egg of Ascaris represents

In an A.C.circuit containing only capacitance, the current

Two waves of intensities $ I $ and $ 4I $ produce interference, the intensity, where they interfere constructively is:

A beam of light is passed through a polaroid and the latter is rotated with the beam of light as axis. The intensity of the emergent light varies between a maximum and minimum. Then the light used is

At $0\, K$ temperature, a $p$ - type semiconductor