List of top Questions asked in BHU UET- 2004

The number of sodium atoms in 2 moles of sodium ferrocyanide is

In the relation $ y=a\,\,\cos \left( \omega t-kx \right) $ ,the dimensional formula for $k$ is :

A galvanometer gives full scale deflection with $0.2\, A$ in a coil shown in the figure. The resistance of its coil is $ 10\,\Omega $ . How much shunt resistance is required to convert it into an ammeter to read current upto $1.8\, A$ ?

The significant figure in 3400 are

A parallel plate capacitor having a plate separation on $2\, mm$ is charged by connecting it to a $300\, V$ supply. The energy density is:

The magnetic needle lying parallel to the magnetic field requires $W$ units of work to rotate it through $60^{\circ}$. The torque needed to maintain the needle in this position is :

For an exothermic reaction, the value of:

The number of lattice arrangements in different crystal systems are:

For a Carnot engine, the source is at $500\, K$ and the sink at $300\, K$. What is efficiency of this engine?

If $20 \,g$ of a solute was dissolved in $500 \,mL$ of water and osmotic pressure of the solution was found to be $600\, mm$ of $Hg$ at $15^{\circ} C$, then molecular weight of the solute is:

The number of sodium atoms in $2$ moles of sodium ferrocyanide is:

According to Bohr's principle, the relation between principle quantum number $(n)$ and radius of orbit is :

According to Heisenberg's uncertainty principle, the product of uncertainties in position and velocities for an electron of mass $ 9.1\times {{10}^{-31}}\,kg $ is:

The state of hybridisation of $B$ in $ BC{{l}_{3}} $ is:

Escape velocity at surface of earth is $11.2\,km/s$. Escape velocity from a planet whose mass is the same as that of earth and radius $1/4$ that of earth, is :

A $100\, m$ long train is moving with a uniform velocity of $45\, km/h$. The time taken by the train to cross a bridge of length $1\, km$ is:

Velocity-time curve for a body, projected vertically upwards, is:

The frequency of vibration of string is given by $ v=\frac{P}{2l}{{\left[ \frac{F}{m} \right]}^{1/2}} $ Here $ p $ is number of segments in the string and $l$ is the length. The dimensional formula for $ m $ will be:

A cylinder of mass $10 \,kg$ is rolling on a rough plane with a velocity of $10 \,m/s$. If the coefficient of friction between the surface and cylinder is $0.5$, then before stopping it will cover a distance of (Take $g = 10\, m/s^2$):

A ball of mass $150\,g$ moving with an acceleration $20 \,m/s^2$ is hit by a force, which acts on it for $0.1\, s$. The impulsive force is :