List of practice Questions

Which of the following is an example of intergenic gene interaction?
What is the actual volume occupied by water molecules present in $20 \, cm^3$ of water ?
What is the quantity of hydrogen gas liberated when $46 \,g$ sodium reacts with excess ethanol ? (Given At. mass of Na = 23)
The suspensor during the development of an angiosperm embryo is formed from _________
What is the $SI$ unit of conductivity ?
Which one of the following plants reproduces vegetatively by epiphyllous buds?
The magnetic moment of electron due to orbital motion is proportional to (n = principal quantum number)
A disc of moment of inertia $'I_1'$ is rotating in horizontal plane about an axis passing through a centre and perpendicular to its plane w ith constant angular speed $?\omega_1'$. Another disc of moment of inertia $?I_2? $ having zero angular speed is placed coaxially on a rotating disc. Now both the. discs are rotating with constant angular speed $?\Omega_2 ?$. The energy lost by the initial rotating disc is
Motile zoospores are produced by
A ceiling fan rotates about its own axis with some angular velocity. When the fan is switched off, the angular velocity becomes $(\frac{1}{4})^{th}$ of the original in time ?t? and ?n? revolutions are made in that lime. The number of revolutions made by the fan during the time interval between switch off and rest are (Angular retardation is uniform)
$\Delta \, ABC$ has vertices at $A = (2, 3,5), B = (-1,3, 2)$ and $C = (\lambda , 5, \mu )$. If the median through A is equally inclined to the axes, then the values of $\lambda$ and $\mu$ respectively are
The closed and open organ pipes have same length. When they are vibrating simultaneously in first overtone, produce three heats. The length of open pipe is made $\frac{1}{2}^{nd}$ and closed pipe is made three times the original, the number of beats produced will be
A lift of mass $m$ is connected to a rope which is moving upward with maximum acceleration $a$. For maximum safe stress, the elastic limit of the rope, is $T$. The minimum diameter of the rope is (g = gravitational acceleration)
The observer is moving with velocity $v_0$ towards the stationary source of sound and then after crossing moves away from the source with velocity $v_0$. Assume that the medium through which the sound waves travel is at rest. If $V$ is the velocity of sound and $n$ is the frequency emitted by the source then the difference between apparent frequencies heard by the observer is
Aldehydes or ketones when treated with $\ce{C_6H_5 - NH - NH_2}$, the product formed is
Identify the weakest oxidising agent among the following.
If the function \[ f(x) = \begin{cases} [ tan (\frac {\pi}{4}+x)]^{1/x} & \quad for\, x \neq 0\\ K \,\,\,\,\,\,\,\,\,\text{if } x =0 \end{cases} \] is continuous at $x = 0$, then $K = ?$
The objective function of $LPP$ defined over the convex set attains its optimum value at
A molecule of Stachyose contains how many carbon atoms ?
A flywheel at rest is to reach an angular velocity of 24 rad/s in 8 second with constant angular acceleration. The total angle turned through during this interval is
Two spherical black bodies have radii $?r_1?$ and $'r_2'$ . Their surface temperatures are $'T_1'$ and $'T_2'$. If they radiate same power then $\frac{r_2}{r_1}$ is
Which of the following statements is INCORRECT in case of Hofmann bromamide degradation ?
The area of the region bounded by the lines $y = 2x + 1, y = 3x + 1$ and $x = 4$ is
If $\int^{\pi/2}_{0} \log\cos x dx =\frac{\pi}{2} \log\left(\frac{1}{2}\right)$ then $ \int^{\pi/2}_{0} \log\sec x dx = $
Which of following coordinate complexes is an exception to $EAN$ rule ? (Given At. No. Pt = 78, Fe = 26, Zn = 30, Cu = 29)