List of top Questions asked in BCECE

Two stones are projected with the same speed but making different angles with the horizontal. Their horizontal ranges are equal. The angle of projection of one is $\pi / 3$ and the maximum height reached by it is $102\, m$. Then the maximum height reached by the other in metre is

The angular amplitude of a simple pendulum is $\theta_{0}$. The maximum tension in its string will be

An engine pumps up $100 \,kg$ of water through a height of $10\, m$ in $5 s$. Given that the efficiency of engine is $60 \%$. If $g=10\, ms ^{-2}$, the power of the engine is

The maximum number of molecules is present in

Difference between $S$ and $ S^{2-} $ as $ S^{2-}$ has

Number of atoms of $He$ in $100\, u$ of $He$ (atomic wt of $He$ is $4$) are

If the electric flux entering and leaving an enclosed surface respectively are $\phi_{1}$ and $\phi_{2}$, the electric charge inside the surface will be

$ C-C $ bond order in benzene is

$ C{{H}_{3}}C{{H}_{2}}Cl $ undergoes homolytic fission, produces

Ozone is used for purifying water because

If two molecules of $A$ and $B$ having mass $100 \,kg$ and $64\, kg$ and rate of diffusion of $A$ is $ 12\times 10^{-3}, $ then what will be the rate of diffusion of $B$?

If $200\,MeV$ energy is released in the fission of a single nucleus of ${ }_{92} U ^{235}$, how many fissions must occur per second to produce a power of $1 \,kW ?$

Find ratio of acceleration due to gravity $g$ depth d and at height $h$, where $d = 2h$.

A light emitting diode (LED) has a voltage drop of $2\, V$ across it and passes a current of $10\, mA$. When it operates with a $6\, V$ battery through a limiting resistor $R$, the value of $R$ is

The minimum potential difference between the base and emitter required to switch a silicon transistor ON is approximately

In the propagation of light waves, the angle between the direction of vibration and plane of polarization is

At what speed, the velocity head of water is equal to pressure head of $40 \,cm$ of $Hg$?

A point initially at rest moves along $x$ -axis. Its acceleration varies with time as $a=(6 t+5) \,m / s ^{2} .$ If it starts from origin, the distance covered in $2 s$ is

A solid sphere rolls down two different inclined planes of same height, but of different inclinations. In both cases

If $E=$ energy, $G=$ gravitational constant, $I=$ impulse and $M=$ mass, then dimensions of $\frac{G I M^{2}}{E^{2}}$ are same as that of

A coin is tossed n times. The probability of getting head at least once is greater than 0.8, then the least value of n is

The equation of the plane passing through the mid point of the line of join of the points $(1, 2, 3)$ and $(3, 4, 5) $ and perpendicular to it is

The domain of the function $ f(x)=\frac{{{\cos }^{-1}}x}{[x]} $ is

For a party $8$ guests are invited by a husband and his wife. They sit in a row for dinner. The probability that the husband and his wife sit together is

Two equal vectors have a resultant equal to either of them, then the angle between them will be