List of practice Questions

How many Faradays of electricity are required for the given reaction to occur ? $ {MnO4^{-} -> Mn^{2+}}$
Paints and hair creams are respectively
The angular amplitude of a simple pendulum is $ \theta_{0} $ The maximum-tension in its string will be
If $\vec{A}$ and $\vec{B}$ are non-zero vectors which obey the relation $\left|\vec{A}+\vec{B}\right|=\left|\vec{A}-\vec{B}\right|$, then the angle between them is
In a Fraunhofer diffraction at single slit of width d with incident light of wavelength 5500 $?$, the first minimum is observed, at angle 30$^{\circ}$. The first secondary maximum is observed at an angle $\theta$ =
The electromagnetic waves are transverse in nature. Waves of wavelength 10 mm are radiowave and microwave.
When a charged particle moves in a circular path. It produces electromagnetic wave. Charged particle has acceleration.
A ball is dropped from the top of a building 100 m high. At the same instant another ball is thrown upwards with a velocity of 40 m/s from the bottom of the building. The two balls will meet after
Electron microscope has more resolving power than optical microscope. We can control the energy of electron.
Which of the following Material has lowest resistivity ?
Which of the statement is incorrect about the simple microscope?
Which of the following reacts fastest with conc. $HCl$ ?
Vegetative reproduction in Marchantia occurs through following:
Two polaroids $A$ and $B$ are placed with their polaroid axes $30^{\circ}$ to each other as shown in the figure. A plane polarized light passes through the polaroid $A$ and after passing through it, intensity of light becomes $I_0$.What is the intensity of finally transmitted light after passing through the polaroid $B$ ?
The unit of evolution is
The Lewis acidity of $BF_3$ is less than $BCl_3$ even though fluorine is more electronegative than chlorine. It is due to
In $OF_2$, oxygen has hybridization of
In a cymose type of inflorescence, the growth of the main axis terminates in a:
Hemichordates have close affinities with which of the following phylum:
Gametophyte of Pteridophyte is called:
If function $f(x) = \begin{cases} x\, \sin\left(\frac{1}{x} \right) ; & \text{x $\ne$ 0} \\[2ex] a \,;& \text{x = 0} \end{cases}$ is continuous at $x = 0$, then value of $a$ is
The tangents to curve $y=x^{3}-2x^2+x-2$ which are parallel to straight line $y = x$ are
Two vectors $A = 3$ and $B = 4$ are perpendicular. Resultant of both these vectors is $R$. The projection of the vector $B$ on the vector $R$ is
The Solution of the differential equation $\left(x+2y^{3}\right) \frac{dy}{dx}=y$ is
Value of the following expression is $\displaystyle \lim_{n \to \infty}$$\frac{1}{n^{3}}\left(1^{2}+2^{2}+3^{2}+ ..... +n^{2}\right)$