List of top Questions asked in KCET, WBJEE

Basic principle of developing transgenic plants and animals is to introduce the gene of interest into the nucleus of
An object placed in front of a concave mirror at a distance of $x \,cm$ from the pole gives a $3$ times magnified real image. If it is moved to a distance of $(x+5)\, cm$, the magnification of the image becomes $2$. The focal length of the mirror is
An equimolar mixture of toluene and chlorobenzene is treated with a mixture of conc. $H_{2} SO_{2}$ and conc. $HNO_{3}.$ Indicate the correct statement from the following.
After forceful inspiration, the amount of air that can be breathed out by maximum forced expiration is equal to
Animals are classified into hierarchical groups. In which one of the following, the largest number of species is found?
Homo erectus evolved during
In spermatogenesis, reduction division of chromosome occurs during conversion of
The carcinoma, a type of cancer, originates from
Which one of the following poultry birds is not an english breed?
The important gas which was absent during the formation of Earth is
The correct sequence of different phases of cell cycle is
Which one of the following life cycle stages of malarial parasite is responsible for relapse of malarial symptoms?
Which one of the following life cycle stages of Wuchereria bancrofti is infective to man?
A man having the genotype $EEFfGgHH$ can produce $P$ number of genetically different sperms, and a woman of genotype $liLLMmNn$ can generate $Q$ number of genetically different eggs. Determine the values of $P$ and $Q$.
Which of the following is not true for $S_N1$ reaction ?
Which of the following is the correct pathway of absorbed water in the roots of plants ?
Which of the following statements is not true for Nostoc ?
X-rays, gamma rays and microwaves travelling in vacuum have
Two thin plano-convex lenses each of focal length $f$ are placed as shown in the figure. The ratio of their effective focal lengths in the three cases is
The value of $^{10}C_1+^{10}C_2+^{10}C_3+....+^{10}C_9 $ is
The $pH$ of the solution obtained by mixing $100\, ml$ of a solution of $pH = 3$ with $400\, ml$ of a solution of $pH = 4$ is
The correct order of electronegativities of $N, O, F$ and $P$ is
Sucrose is NOT a reducing sugar since
Power alcohol is a mixture of
In the loop shown, the magnetic induction at the point $O$ is