List of top Questions asked in BCECE

Carbolic acid is

The time of vibration of a dip needle vibration in the vertical plane in the magnetic meridian is $3 s$ . When the same magnetic needle is made to vibrate in the horizontal plane, the time of vibration is 3 $ \sqrt{2} $ s. Then angle of dip will be

The equation of the circle concentric to the circle $ 2{{x}^{2}}+2{{y}^{2}}-3x+6y+2=0 $ and having area double the area of this circle, is

If $e$ and $e^{'}$ are the eccentricities of hyperbolas $\frac{x^{2}}{a^{2}}-\frac{y^{2}}{b^{2}}=1$ and its conjugate hyperbola, then the value of $\frac{1}{e^{2}}+\frac{1}{e^{'2}}$ is

Let $ f(x)=\left\{ \begin{matrix} \frac{\tan x-\cot x}{x-\frac{\pi }{4}}, & x\ne \frac{\pi }{4} \\ a, & x=\frac{\pi }{4} \\ \end{matrix} \right. $ the value of a so that $ f(x) $ is continuous at $ x=\frac{\pi }{4} $

The value of the $ \int_{{}}^{{}}{\frac{\sin x+\cos x}{3+\sin 2x}}dx $ is

If $ {{I}_{m}}\left( \frac{z-1}{2z+1} \right)=-4, $ then locus of z is

Which one of the following shows maximum value of paramagnetic behaviour?

Which one of the following is a correct statement?

The instrument used by doctors for endoscopy works on the principle of

The ratio of the coefficient of thermal conductivity of two different materials is $ 5:3. $ If the thermal resistance of the rods of same thickness of these materials is same, then the ratio of the length of these rods will be

A particle executes SHM of amplitude 25 cm and time period 3 s. What is the minimum time required for the particle to move between two points 12.5 cm on either side of the mean position?

A solid metallic sphere has a charge $+3 Q$. Concentric with this sphere is a conducting spherical shell having charge $-Q$. The radius of the sphere is $a$ and that of the spherical shell is $b(b>a)$. What is the electric field at a distance $R(a

The solubility product of $ BaC{{l}_{2}} $ is $ 4\times {{10}^{-9}}. $ Its solubility in mol/L is

For the reaction, $H _{2}+ I _{2} \rightleftharpoons 2 HI$, the equilibrium concentration of $H _{2}, I _{2}$ and $HI$ are $8.0, 3.0$ and $28.0 \,mol / L$ respectively. The equilibrium constant is

Which one of the following is a conjugated protein?

The wavelength of the first spectral line of sodium is $5896 \,??. The first excitation potential of sodium atom will be $\left(h=6.63 \times 10^{-34} \,Js \right)$

If the coefficient of static friction between the tyres and road is $0.5$, what is the shortest distance in which an automobile can be stopped when travelling at $72\,km/h$?

Compressional wave pulses are sent to the bottom of sea from a ship and the echo is heard after $2 s$. If bulk modulus of elasticity of water is $2 \times 10^{9} \,N / m ^{2}$ and mean temperature is $4^{\circ} C$, the depth of the sea will be

Which one of the following has square planar structure?

The chemical formula of plaster of Paris is

Zinc and cold dil. $ HNO_3$ reacts to produce

Tincture of iodine is

Methyl- $\alpha$ -D-glucoside and methyl $\beta$ -D-glucoside are