List of top Questions asked in WBJEE

Which of the following expressions gives the de-Broglie relationship?
Which of the following element is responsible for Minamata disease?
Which of the following acids has the smallest dissociation constant?
When $KI$ is added to acidified solution of sodium nitrite, then
What is the structural element of cell wall?
Water vascular system is present in which of the following phylum?
The vector of the kala- azar is
The value of $\cos \frac{\pi}{15}\, \cos \frac{2\pi}{15}\, \cos \frac{4\pi}{15}\, \cos \frac{8\pi}{15} $ is
Liquid, which collects in Bowmans capsule is
In which of the following phyla, compound eyes are present?
In which triploblastic animal, coelom is absent?
In floral formula (K) denotes
The differential equation of the family of circles passing through the fixed points $(a, 0)$ and $(-a, 0)$ is
The order and degree of the following differential equation $\left[1+\left(\frac{dy}{dx}\right)^{2}\right]^{5/2} = \frac{d^{3}y}{dx^{3}}$ are respectively
The value of the integral $\int\limits_{-a}^{a} \frac{xe^{x^2}}{1+x^{2}} dx $ is
The value of $\displaystyle\lim_{n\to\infty}\left(\frac{1}{n+1} +\frac{1}{n+2}+... +\frac{1}{6n}\right)$ is
Distillation of acetone with concentrated sulphuric acid gives
One of the characteristic of sieve tube is
Plants purify air by which process?
In the following pairs, where do you get lignin in both the element?
A substance that induces dormancy of seed is
From which of the following, photosyntheric autotrophs receive their energy?
Study of pollen grain is called
Which of the following sequence is a correct one foar meiotic cell cycle?
When does a plant wilt?