List of practice Questions

Which of the following is the \(K_b\) for the conjugate base of carbonic acid?
The hormone 'melatonin' is secreted by the gland
Which of the following compound has all the four types $\left(1^{\circ}, 2^{\circ}, 3^{\circ}\right.$ and $\left.4^{\circ}\right)$ of carbon atoms?
Which of the following has two stereoisomers?
Average energy in one time period of a simple harmonic oscillator whose amplitude is A, angular velocity $\omega$ and mass m, is:
A pendulum with a period of 2 seconds at sea level has its length doubled. Its new period is now most nearly:
A proton and an electron are placed in a uniform electric field. Which of the following is correct?
A long string with a charge of a per unit length passes through an imaginary cube of edge L.
The maximum possible flux of electric field through the cube will be
A string of length $\ell$ is fixed at both ends. It is vibrating in its $3^{rd}$ overtone with maximum amplitude '$a$'. The amplitude at a distance $\ell /3$ from one end is.
The atom of largest size among the following is
The given circuit has two ideal diodes connected as shown in the figure below. The current flowing through the resistance \(R_1\) will be
two ideal diodes
The equation $x^2 - 2 \sqrt{3} xy + 3y^2 - 3x + 3 \sqrt{3} y - 4 = 0 $ represents
If $\log a, \log b$, and $\log c$ are in A.P. and also $\log a-\log 2 b, \log 2 b-\log 3 c, \log 3 c-\log a$ are in A.P., then
If $\sin^{-1} \left(\frac{2a}{1+a^{2}}\right) -\cos^{-1} \left(\frac{1-b^{2}}{1+b^{2}}\right) = \tan^{-1} \left(\frac{2x}{1-x^{2}}\right) , $ then what is the value of x?
If $\sum\limits^{n}_{r=0} \frac{r+2}{r+1} \,^{n}C_{r} = \frac{2^{8}-1}{6} $, then $n =$
The curve $y = xe^x$ has minimum value equal to
The number of values of $r$ satisfying the equation $^{39}C_{3r-1} - ^{39}C_{r^{2}} = ^{39}C_{r^{2}-1} - ^{39}C_{3r} $ is

What is the ratio of the production of Pulses to that of Wheat over the six years ?

In which year is the production the minimum ?

Which of the following Options best captures the relationship similar to INSPECT : VIVISECT?

Benevolent : Kind :: Unclear : _____________________

“Assumptions are analogous to the basic ingredients in a gourmet recipe. Only the final product of the recipe dictates whether the ingredients suffice………”
Which of the following is ANALOGOUS to the statement above?

In 2015 what is the difference between the amount of PDS supply and that used in export ?

In which year is the quantity of PDS supply the minimum ?

$CH _{3} C \equiv CCH _{3} \xrightarrow{H 2 / P t} A \xrightarrow{D_{2} / P t} B$ The compounds $A$ and $B$, respectively are