List of practice Questions

Semiconductors chapter base emitter numerical
The orthocentre of the triangle formed by the lines... lies in which quadrant
Two spheres with unequal radii have charge - if they are connected by a thin wire what will happen to charges?
Electrostatics -4q and +2q charges dipole present in uniform electric field direction of rotation and net force?
The number of spectral lines that are possible when electrons in fourth energy level in different hydrogen atoms return to ground state.
$\int x^{2}\left(ax + b\right)^{-2} dx$ is equal to
Which one of the following statements is correct? $f(x) = \frac{1}{1 + \tan \, x} $
In what ways did the British officers exploit Indians?
A moving charge interacts
A resistance wire of $72\,\Omega$ is connected across 120 V dc source. When a similar wire is connected in paralllel with the first wire, change in power dissipated is
When a material is placed in a magnetic field B, a magnetic moment proportional tc B but in a direction opposite to B is induced. The material is
A long hollow copper pipe carries a current. The magnetic field producted will be

A dipole of moment \(\overrightarrow{p}\) is placed in uniform electric field \(\overrightarrow{E}\) then torque acting on it is given by : -

$ \int_{-1}^{1}{\frac{17{{x}^{5}}-{{x}^{4}}+29{{x}^{3}}-31x+1}{{{x}^{2}}+1}}dx $ is

The \(30^{th}\) term of the arithmetic progression \(10, 7, 4\)……… is

The first term of an infinite $GP$ is $1$ and each term is twice the sum of the succeeding terms, then the sum of the series is
Have you seen anybody winnow grain at home or in a paddy field? What is the word in your language for winnowing? What do people use for winnowing? (Give the words in your language, if you know them.)
If f(x) = 3ax3 + bx2 + cx + 1 and f(1) = 41, f'(1) = 2 and f''(2)= 4, then find (a2 + b2 + c2).
The part of the electromagnetic spectrum to which 2.7 K belongs is
A 60 μF capacitor is connected to a 110 V, 60 Hz ac supply. Determine the rms value of the current in the circuit
Decreasing order of the field strength of the following ligands will be: CO, CN-, Cl-, H2O
A book exhibition was held for four days in a school. The number of tickets sold at the counter on the first, second, third and final day was respectively 1094, 1812, 2050 and 2751. Find the total number of tickets sold on all the four days.
What are the major groups of microorganisms?
25 mL of 3 M HCl were added to 75 mL of 0.05 M HCl. The molarity of HCl in the resulting solution is approximately
Chlorine is prepared in the laboratory by treating manganese dioxide \((MnO_2)\) with aqueous hydrochloric acid according to the reaction
\(4 HCl (aq) + MnO_2(s) → 2H_2O (l) + MnCl_2(aq) + Cl_2 (g)\).
How many grams of HCl react with 5.0 g of manganese dioxide?