List of practice Questions

In an AC generator, a coil with $N$ turns, all of the same area $A$ and total resistance $R$, rotates with frequency $\omega$ in a magnetic field $B$. The maximum value of emf generated in the coil is:
In a colony of honey bee family there are
If the terminal speed of a sphere of gold (density $= 19.5 kg/m^3$) is $0.2\, m/s$ in a viscous liquid (density $= 1.5\, kg/m^3$), find the terminal speed of a sphere of silver (density $= 10.5\, kg/m^3$) of the same size in the same liquid.
If the expansion in powers of $x$ of the function $\frac{1}{\left(1-ax\right)\left(1-bx\right)}$ is $a_{0}+a_{1}x+a_{2}x^{2}+a_{3}x^{3}+ ..... ,$ then $a_n$ is :
If $ \sigma $ = surface charge density, $ \varepsilon $ = electric permittivity the dimensions of $ \frac{ \sigma}{ \varepsilon } $ are same as
If L is the coherence length and c the velocity of light, the coherent time is
If a ray of light is incident on an equilateral glass prism PQR placed on a horizontal table, then for the minimum deviation which of the following is true?
Human female possess $ 44+XX $ chromosomes. The secondary oocyte shall have:
How many ATPs are produced during glycolysis of one molecule of glucose?
HBr reacts with $CH_2=CH??CH_3$ under anhydrous conditions at room temperature to give :
Given below is a circuit diagram of an $AM$ demodulator.
For good demodulation of $AM$ signal of carrier frequency $f$, the value of $R C$ should be :
For a spontaneous process the correct statement is
For a wire of length $l$ , maximum change in length under stress condition is $2 \,mm$. What is the charge in length under same conditions when length of wire is halved?
Food in plants is translocated in the form of
Flash light equipped with a new set of batteries, produces bright white light. As the batteries wear out,
Eutrophication of water bodies leading to killing of fishes is mainly due to non-availability of
Distance between successive compression and rarefaction is $1 \,m$ and velocity of sound is $360 \,ms^{-1}$. Find frequency :
1 mole of $H_{2}$ and 2 moles of $I_{2}$ are taken initially in a 2 litre vessel. The number of moles of $H_{2}$ at equilibrium is 0.2. Then the number of moles of $I_{2}$ and $HI$ at equilibrium are
The science of heredity is called as 'Genetics' . The word 'Genetics' comes from the word
Which one is the correct chromosome complement of Downs syndrome
Which amino acid is specified by the genetic codes ACU, ACC, ACA, ACG showing degeneracy
The auxins are abundantly produced in
The primary function of the myelin sheath around a vertebrate axon is to
Phospholipids are important cell membrane constituents because they
Chlorosis occurs when plants are grown in