List of practice Questions

Which of the following order of ionization energy is correct?
The following compound cannot exhibit: $CH_{3}CH=CH-CH(OH)\cdot COOH$
$CH_{3}CHCl_{2}$, on hydrolysis, will give:
Which of the following, is a mordant dye?
Black rust of wheat is a fungal disease caused by
ADH controls water permeability of
A stone is thrown with an initial speed of $4.9\, m / s$ from a bridge in vertically upward direction. It falls down in water after $2\, \sec$. The height of bridge is
A siren emitting sound of frequency $500\, Hz$ is going away from a stationary listener with a speed of $50\, m / s$, the frequency of sound heard directly from the siren is
The half-life of a radioactive substance is $3.6$. How much of $20\,mg$ of this radioactive substance will remain after $36$ days ?
A circular coil of mean radius of $7\, cm$ and having $4000$ turns is rotated at the rate of $1800$ revolutions per minute in the earth's magnetic field $(B=0.5$ gauss), the emf induced in coil will be
The work done in pulling up a block of wood weighing $2\, kN$ for a length of $10\, m$ on a smooth plane inclined at an angle of $15^{\circ}$ with the horizontal is
If the heat of $110\, J$ is added to a gaseous system, whose internal energy is $40\, J$, then the amount of external work done is
The coal tar fraction which contains phenol is :
Which of the following animals is protected in Kaziranga Sanctuary in Assam
Which of the following is not an amphoteric substance ?
Consider a system of two particles having masses $m_1$ and $m_2$. If the particle of mass $m_1$ is pushed towards the mass centre of particles through a distance '$d$', by what distance would be particle of mass $m_2$ move so as to keep the mass centre of particles at the original position ?
A mass of $0.5 \,kg$ moving with a speed of $1.5 \,m/s$ on a horizontal smooth surface, collides with a nearly weightless spring of force constant $k = 50 \,N/m$. The maximum compression of the spring would be
Correct order of reactivity:
Which of the following product is formed in the reaction $ CH_3MgBr {->[(i)CO_2][(ii)H_2O]} ? $
A ray of light is incident on an equilateral glass prism placed on a horizontal table. For minimum deviation which of the following is true ?
If $ \lambda_m $ denotes the wavelength at which the radiative emission from a black body at a temperature $T\, K$ is maximum, then
A resonance air column of length $40\,cm$ resonates with a tuning fork of frequency $450 \,Hz$. Ignoring end correction, the velocity of sound in air will be :
Which of the following is the most resistant material in pollen grain?
If the pollen tube enters the ovule through funiculus, the phenomenon is known as
The energy in $MeV$ is released due to transformation of $1\, kg$ mass completely into energy, is $\left(c=3 \times 10^{8} m / s \right)$