List of practice Questions

The bus moving with a speed of $42 \,km / h$ is brought to a stop by brakes after $6\, m$. If the same bus is moving at a speed of $90 \,km / h$, then the minimum stopping distance is
The Lenz's law is the consequence of the conservation of
The waves used for line-of-sight $(LOS)$ communication is
Which of the following processes will be most adversely affected if microorganisms are removed from a forest ecosystem?
Residual, persistent nucellus present in some seeds is known as
Which pair of plants placed in the family- Solanaceae?
$PAE$ stands for
Yeast is used for commercial production of
Microbe used as clot buster during myocardial infraction
$70 \,S $ ribosomes occur in
Atoms with identical atomic number but different atomic mass number are known as
The colour of transition metal compound is due to
What elements are present in $ f- $ block series?
Ethylene can be converted into alcohol by treatment of
In the formation of $ \pi - $ bond, the atomic orbitals overlap in such a way that
A liquid which decomposes at its boiling point can be purified by
Find wrong statement
What is the oxidation number of vanadium in $R b_{4} N a\left[H V_{10} O_{28}\right] ?$
$ {{(1+i)}^{3}}+{{(1-i)}^{3}} $
Which of the following has higher bond angle?
First ionisation enthalpy of ${Al}$ is lower than that of ${Mg}$. This is because
Which one of the following kinds of animals are triploblastic?
Vasa efferentia are muscular tubes, each of which connects
The ratio of the energy required to raise a satellite upto a height $h$ above the earth of radius $R$ to that the kinetic energy of the satellite into that orbit is
The power of biconvex lens is 10 dioptre and the radius of curvature of each surface is 10 cm. Then the refractive index of the material of the lens is