List of practice Questions

What are lanthanides and actinides?
The entropy of vaporization of a liquid is $58 \, JK^{-1} \,mol^{-1}$. If $100\, g$ of its vapour condenses at its boiling point of $123^{\circ}C$, the value of entropy change for the process is (Molar mass of the liquid = $58 \,g \,mol^{-1})$
Green chemistry deals with
A uniform wire of resistance 9 $\Omega$ is joined end-to-end to form a circle. Then the resistance of the circular wire between any two diametrically opposite points is
A particle has the position vector ${r} = \hat{i} - 2\hat{j } + \hat{k}$ and the linear momentum ${p} = 2\hat{i} - \hat{j} + \hat{k}$. Its angular momentum about the origin is
If $0< x< \pi$, then $\frac{\sin 8 x+7 \sin 6 x+18 \sin 4 x+12 \sin 2 x}{\sin 7 x+6 \sin 5 x+12 \sin 3 x}$ equal to
A body oscillates with SHM according to the equation (in SI units), $x = 5 cos \left(2\pi t +\frac{\pi}{4}\right) .$ Its instantaneous displacement at $t = 1$ second is
According to MO theory,
The sugar moiety present in $RNA$ molecule is
Novlac, the linear polymer used in paints is
Wood spirit is known as
Which of the following is a dimensionless quantity?
The angle between the true geographic north and the north shown by a compass needle is called as
Solve $ \frac{dy}{dx}+\frac{y}{x}={{x}^{3}} $
An athlete throws the shot-put of mass $ 4\,kg $ with initial speed of $ 2.2\,ms^{-1} $ at $ 41^{\circ} $ from a height of $ 1.3\,m $ from the ground. What is the KE of the shot-put when it reaches the ground? (Ignoring the air resistance and gravity $ g=9.8 \, m/s^{-2} $ )
The correct order of arrangement of electromagnetic waves according to their wavelength is
Which one of the following equation is Torricelli law?
The smallest quantity of energy that can be emitted or absorbed in the form of electromagnetic radiation is known as
In a video signal for transmission of picture, what value of bandwidth is used in communication system?
A zener diode is used as
What is the unit of zero order reaction?
How much is the $pH$ of human blood?
How many octahedral void(s) are present per atom in a cubic close - packed structure?
What is the fraction of molecular volume to the actual volume occupied by oxygen gas at $STP$ ? Given, the diameter of oxygen molecule is $ 2\,? $ .
When a particle returns to its initial point, its