List of practice Questions

A body at a temperature of $728^{\circ} C$ and has surface area $5\, cm ^{2}$, radiates $300\, J$ of energy each minute. The emissivity is (Given Boltzmann constant $=5.67 \times 10^{-8} Wm ^{2} K ^{4}$ )
The maximum vertical distance through which a full dressed astronaut can jump on the earth is $0.5\, m$. Estimate the maximum vertical distance through which he can jump on the moon, which has a mean density $\frac{2}{3}$ rd that of the earth and radius one quarter that of the earth.
As shown in figure a simple harmonic motion oscillator having identical four springs has time period
Which of the following inert gas compounds is not formed?
Which of the following statements about the food chain is false?
Which one of the following is the unique feature of angiosperms?
What percentage of impurities make domestic sewage unfit for human use?
The value of $g$ at a height equal to half the radius of the earth from the earth's surface is
The probe for DNA fingerprinting are
Taq polymerase is isolated from a
$\int e^{x}\left(\cos x -\sin x\right)dx $ is equal to
In which of. the following areas does the primary succession occur?
If $y = \tan \: x $ then $ \frac{d^2 y}{dx^2} $ =
If $\vec{a}$ and $\vec{b}$ are two vectors of magnitude $2$, each inclined at an angle $60^\circ$, then angle between $\vec{a}$ and $\vec{a} +\vec{b}$ is
If $\sin(120 - A)= \sin(120 - B)$ and $0< A, B < \pi $ then all values of $A, B$ are given by.
If $A$ is the angle of prism, $r$ angle of refraction, then the condition for minimum deviation is
Human primary spermatocyte contains
Given that $P(A) = 0.1, P(B | A) = 0.6$ and $ P(B |A^c ) = 0.3$ what is $P(A | B)$ ?
Fullerene with formula $C_{60}$ has a structure where every carbon atom is
For all gases, at any given pressure, the graph of volume vs temperature (in celsius) is a straight line. This graph is called
Mycorrhiza is an example of
Cytokinin is not found in
Which one of the following is not a synovial joint?
What is cardiac output?
Phototrophs and chemotrophs are defined on the basis of their