List of practice Questions

Power supplied to a particle of mass 2 kg varies with time as $ P=\frac{3{{t}^{2}}}{2}W. $ Here t is in second. If velocity of particle at $ t=0 $ is $ v=0, $ the velocity of particle at time $ t=2\,s $ will be
Which one of the following represents the correct ratio of the energy of electron in ground state of $H$ atom to that of the electron in the first excited state of $Li^{+}$ ?
A pulley fixed to the ceiling carries a string with blocks of masses $m$ and $3m$ attached to its ends. The masses of string and pulley are negligible. When the system is released, the acceleration of centre of mass will be
The charge flowing in a conductor varies with time as $ Q=at-b{{t}^{2}}, $ then the current changes at the rate of $ (-2b) $ falls to zero after $ T=\left( \frac{a}{2b} \right) $ (3) reaches a maximum and then decreases (4) will remain constant
A wooden block of mass $M$ resting on a rough horizontal surface is pulled with a force $F$ at an angle with the horizontal. If $ \mu $ is the coefficient of kinetic friction between the block and the surface, then acceleration of the block is
Which of the following is not considered as a mutagen
Which of the following is related to humoral immunity ?
Which of the following is the subaerial stem modification with long inter mode
Which of the following tissues is most abundant and forms most of the body parts?
Which one of the following animal phyla does not possess a coelom
Which one of the following cells is not a phagocytic cell
Which one of the following has the lowest ionization energy?
Which one of the following is a primary consumer
Which one of the following is an exception to cell theory?
Which one of the following is an exotic carp species
Which one of the following is not a secondary messenger in hormone action?
Who among following is the Father of Botany?
Who wrote the famous book �Origin of Species�?
Which of the following components helps in building up of plasma membrane
What is genophore ?
The work done by an applied variable force $F=x +x^{3}$ from $x=o m$ to $x=2, m$ where $x$ is displacement, is
The value of $\cos\, 15^{\circ} - \sin \,15^{\circ}$ is
The pentaradial symmetry is found in
The open circulatory system is found in
The non-keratinised stratified squamous epithelium is present in