List of practice Questions

A body moves along a circular path of radius $10\, m$ and the coefficient of friction is $0.5$. What should be its angular speed in rad/s if it is not to slip from the surface? ( $ g=9.8\text{ }m{{s}^{-2}} $ )
A body is initially at rest. It undergoes one dimensional motion with constant acceleration. The power delivered to it at time $t$ is proportional to
lf the focal length of the lens is $20\, cm$. what is the distance of the image from the lens in the following figure?
The total energy of a satellite moving with an orbital velocity $v$ around the earth is
The speed of a wave on a string is $150\, ms^{-1}$ when the tension is $120\, N$. The percentage increase in the tension in order to raise the wave speed by $20\%$ is
A 0.5 kg ball moving with a speed of 12 $ms^{-1}$ strikes a hard wall at an angle of 30$^{\circ}$ with the wall. It is reflected with the same speed and at the same angle. If the ball is in contact with the wall for 0.25 s, the average force acting on the wall is :-
Which of the following is the most basic oxide?
Yellow colour of faeces is due to
Vaccination of malaria is not possible becasue
Upward movement of water in plants is called
Two copper wires of length $ l $ and $2 l $ have radii $r$ and $2r$ respectively. What is the ratio of their specific resistances?
The condition trisomic is referred to as
The cell drinking is
Principle of $H$-bomb is:
$R - \underset{\overset{||}{O}}{C} - Cl + H_2 \ce{->[Pd/BaSO_4][S]} RCHO$, the name of reaction is :
How many ions will be furnished by $ CoCl_{3}\,.\,\,6NH_{3} $ ?
Reactivity order of following towards $ NaOE,\,EtOH $ :
If sin $\theta$ , cos $\theta$ , tan $\theta$ are in G.P. then $cos^{9} \theta + cos^{6}\theta + 3cos^{5}\theta- 1$ is equal to
Food bolus after passing through alkaline medium is
Epidermal scales are the characteristic feature of class reptilia. Which of the following classes is without epidermal outgrowths
What is dimensional formula of thermal conductivity?
Two copper wires of length $ l $ and $2 l $ have radii $r$ and $2r$ respectively. What is the ratio of their specific resistances?
Toluene by Etard reaction gives:
At high pressure van der Waals equation becomes :
Reactivity order of following towards $ NaOE,\,EtOH $ :