List of practice Questions

Production of a human protein in bacteria by genetic engineering is possible because :
Protein synthesis in an animal cell occurs :
Two pendulums begin to swing simultaneously. If the ratio of the frequency of oscillations of the two is $ 7:8, $ then the ratio of lengths of the two pendulums will be
The reaction in which phenol differs from alcohol is:
A mixture of two moles of carbon monoxide and one mole of oxygen, in a closed vessel is ignited to convert the carbon monoxide to carbon dioxide.If $\Delta H$ is the enthalpy change and $\Delta E$ is the change in internal energy, then,
Select the right option in the following
A heating coil takes 6 min to boil certain amount of milk. Another heating coil takes 3 min to boil same amount of milk. Supply voltage is same. When the coils are connected in parallel, time taken to boil same amount of milk is
The insulation property of air breakdown is $3 \times 10^6 V/m$. Maximum charge in coulomb that can be given to a sphere of radius 10 cm is approximately
If $\lambda_1 , \lambda_2$ and $\lambda_3$ are the eigen values (i.e. characteristic values) of the matrix $\begin{vmatrix}1&2&15\\ 3&4&11\\ 5&6&7\end{vmatrix}$ then $ \left(1 -\lambda_{1}\right)\left(1+\lambda _{2}\right)\left(1+\lambda _{3}\right)$ equals
If $p, q , r$ are the roots of the equation $\begin{vmatrix}x&1&2\\ 1&x&2\\ 1&2&x\end{vmatrix} = 0$ , then $\frac{p^{4} +q^{4}+r^{4}}{p^{2}+q^{2} +r^{2}}$ is equal to
Define $f (x) = min{x^2 + 1, x + 1]$ for.$x e\in R$. Then $ \int\limits_{-1}^1f (x)dx $ is
The value of the integral $\int\limits_{0}^{\pi/ 4} \frac{1+\sin^{2} }{ \cos^{3} x} dx $ is
With sodium hydroxide, silver nitrate forms a black precipitate of
Mass defect in a fusion reaction is 0.36%. Energy liberated when 1 gm of material undergoes fusion in kWh is
A particle is projected with a velocity so that height attained becomes equal to the radius of the earth. Then the velocity is
An example of a zero order reaction is
If $n$ is a positive integer which is relatively prime to $6,$ and if $n$ has $8$ divisors, then $12n$ has
If $A$ is a square matrix.such that $A^3 = 0$, then $(I + A)^{-1}$ is
When alcohol reacts with concentrated $H_{2}SO_{4},$ intermediate compound formed is :
In the manufacture of ordinary glass the substance used is
Which of the following reagents can be used to distinguish between phenol and benzyl alcohol ?
Magnetic moment of deuteron is
A step up transformer has turns ratio $10 : 1$. A source of emf 2 volts is fed to the primary. Secondary voltage developed is
Curie temperature is the temperature above which
If $\sin(\pi \cos \theta) = \cos(\pi \sin \theta),$ then $\sin 2 \theta$ equals