List of practice Questions

What is the value of γ for a monoatomic gas (ideal gas):

What will be the Heat of vaporisation of 1 mole of water, when it has the entropy change (AS) of 35.2 cal/mole.deg (at 25°C)?

In the purification of impure nickel by Mond's process, metal is purified by:

speeds of $20\, m/s$ and $15\, m/s$ relative to the ground. The first train sounds a whistle of frequency $600\, Hz$. The frequency of the whistle heard by a passenger in the second train before the train meets, is (the speed of sound in air is 340 m/s)

General formula of solid in zinc blende structure is:

What is the slope of the normal at the point (at, 2at) of the parabola y = 4ax ?

In the reaction $2 PCl _{5} \rightleftharpoons PCl _{4}^{+}+ PCl _{6}^{-}$, the change in hybridisation is from

The coefficient of $x^2$ term in the binomial expansion of $\left(\frac{1}{3}x^{1/2}+x^{-1/4}\right)^{10}$ is :

With the usual notation $\displaystyle \int_1^2 ([x^2]-[x]^2)dx$ is equal to

For the following feasible region, the linear constraints are

Water is flowing through a horizontal tube having cross-sectional areas of its two ends beings $A$ and $A$' such that the ratio $A/A$' is $5$. If the pressure difference of water between the two ends is $3 \times 10^5\, N m^{-2}$, the velocity of water with which it enters the tube will be (neglect gravity effects)

Volume of blood that flows per unit time per unit volume of the tissue is :

In Dumas method one gram of carbon compound gives $50 \,mL$ of $N _{2}$ at $300\, K$ and $740 \,mm\, Hg$ pressure. If the aqueous tension at $300\, K$ is $15\, mm\, Hg$, what is the percentage of nitrogen in it?

Write the IUPAC name of the following

A deep rectangular pond of surface are A, containing water (density = r, specific heat capacity = s), is located in a region where the outside air temperature is at a steady value of -26°C. The thickness of the frozen ice layer in this pond, at a certain instant is x. Taking the thermal conductivity of ice as K, and its specific latent heat of fusion as L, the rate of increase of the thickness of ice layer, at this instant would be given by :-

Permitted tolerance limit for a 100mL class B volumetric flask and 1000 mL class B volumetric flask according to BS 1792 specifications respectively are___mL

A force $ F = 3x^2 + 2x + 1 $ acts on a body in the $ x $ -direction. The work done by this force during a displacement from $ x = -1 $ to $ +1 $ is

Which gas is present predominantly in biogas

Find the current drawn from the battery just after the switch is closed

For a particle in SHM, the displacement x of the particle as a function of time t is given as x = A sin (2 pt) Here x is in cm and t is in seconds. Let the time taken by the particle to travel from x = 0 to x = A/2 be t and the time taken to travel from x = A/2 to x = A be t. Find t/t

\(log(\frac {97-56\sqrt 3}{log\sqrt {7+4\sqrt 3}})\) equals which of the following?

If same charge q is placed inside a sphere and cube having radius 1m and side 2m respectively. What will be the ratio of flux passing through them ?

As per US FDA, NDA’s for new chemical entitles are classified as either :

In water saturated air, the mole fraction of water vapour is $0.02$. If the total pressure of the saturated air is $1.2\, atm$, the partial pressure of dry air is :