List of practice Questions

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 $ :

Number of atoms in bcc :

Principle of $H$-bomb is:

$R - \underset{\overset{||}{O}}{C} - Cl + H_2 {->[Pd/BaSO_4][S]} RCHO$, the name of reaction is :