List of practice Questions

The general formula of a cycloalkane is
The dimensional formula for impulse is
The maximum height attained by a projectile when thrown at an angle $\theta $ with the horizontal is found to be half the horizontal range. Then $\theta $ =
The ionization energy of $Li^{2+}$ is equal to
The de Broglie wavelength of a proton (charge = $1.6\times10^{-19}C$ mass = $1.6\times10^{-27} kg)$ accelerated through a p.d of $1\, kV$ is
Minority carriers in a $p-type$ semiconductor are
Glucose gives silver mirror with ammoniacal silver nitrate because it has
The gases carbon-monoxide $ (CO) $ and nitrogen at the same temperature have kinetic energies $ E_1 $ and $ E_2 $ respectively. Then
When ammonium chloride is added to ammonia solution, the pH of the resulting solution will be
The moment of inertia of a uniform circular disc of radius $ R $ and mass $ M $ about an axis touching the disc at its diameter and normal to the disc is
Sound waves are not transmitted a long distance because
If an electron is brought toward another electron, the electric potential energy of the system
An open knife edge of mass m is dropped from a height $h$ on a wooden floor. If the blade penetrates distance $s$ into the wood, the average resistance offered by the wood to the blade is
$x^2 + y^2 -6x-6y + 4 = 0, x^2 + y^2 - 2x - 4y + 3 - 0 , x^2 + y^2 + 2k x + 2y +1 = 0$. If the Radical centre of the above three circles exists, then which of the following cannot be the value of $k$ ?
Moment of inertia of ring about its diameter is $ I $ Then, moment of inertia about an axis passing through centre perpendicular to its plane is
Which of the following is not an accessory pigment?
Extraction of zinc from zinc blende is achieved by
Consider a titration of potassium dichromate with acidified Mohr?s salt solution using diphenylamine as indicator. The number of moles of Mohr?s salt required per mole of dichromate is :
The fraction of total volume occupied by the atoms present in a simple cube is
The length of the wire is doubled, Its conductance will
Pure line breed refers to
A particle moves from position \(3\hat{i}+2\hat{j}+6\hat{k}\) to \(14\hat{i}+13\hat{j}+9\hat{k}\) due to a uniform force of \(4\hat{i}+\hat{j}+3\hat{k}\,N\) . Find the work done, if the displacement is in metre.
How many chiral carbon atoms are present in $2,3,4$ - trichloropentane ?
Climacteric is
Dalton's law of partial pressures is applicable to which one of the following systems ?