List of top Questions asked in KEAM

Domain of the function \( \sin^{-1}(2x - 1) \) is:
If \( 2 \sin \left( \frac{\pi}{3} - 2x \right) - 1 = 0 \), \( 0<x<\frac{\pi}{2} \), then the value of \( x \) is:
If \( \cos x - \sin x = 0 \), \( 0 \leq x \leq \pi \), then the value(s) of \( x \) is/are:
The value of \( \cos 26^\circ + \cos 54^\circ + \cos 126^\circ + \cos 206^\circ + \cos 240^\circ \) is:
If \( \cos \theta + \sin \theta = \sqrt{2} \), then \( \cos \theta - \sin \theta \) is equal to:
If \( |x - 2| \leq 4 \), then \( x \) lies in the interval:
If \( A = \begin{bmatrix} 3 & 7 \\ 2 & 5 \end{bmatrix} \), then \( A^2 (\text{adj} A) \) is:
If \( A = \begin{bmatrix} 4 & -1 \\ 12 & x \end{bmatrix} \) and \( A^2 = A \), then the value of \( x \) is:
The common ratio of a G.P. is 10. Then the ratio between its 11th term and its 6th term is:
If \( \frac{1}{\log_2 x} + \frac{1}{\log_3 x} + \frac{1}{\log_4 x} + \frac{1}{\log_5 x} + \frac{1}{\log_6 x} = 1 \), then the value of \( x \) is
The coefficient of \( x^7 \) in the expansion of \( \left( \frac{1}{x + x^2} \right)^8 \) is
If \( \frac{|z - 5i|}{|z - 5i|} = 1 \), then
If \( x + iy = \frac{3 + 4i}{5 - 12i} \), then \( x + y \) is equal to
If the complex numbers \( (2 + i)x + (1 - i)y + 2i - 3 \) and \( x + (-1 + 2i)y + 1 + i \) are equal, then \( (x, y) \) is
If \( f(x) = \frac{x}{1 - x} \), \( x \neq 1 \), then the inverse of \( f \) is:
If \( f(x) = x + 8 \), and \( g(x) = 2x^2 \), then \( (g \circ f)(x) \) is equal to
The period of the function \( \sin\left( \frac{\pi x}{4} \right) \) is
The domain of the function \( f(x) = \sqrt{7 - 8x + x^2} \) is:
If \( f(x) = \lfloor x \rfloor \), where \( \lfloor x \rfloor \) denotes the greatest integer function, and if the domain of \( f \) is \( \{-3.01, 2.99\} \), then the range of \( f \) is
Let \( P \) and \( Q \) be two finite sets having 3 elements each. The total number of mappings from \( P \) to \( Q \) is
A fibrous protein present in muscles is:
When benzene diazonium fluoroborate is heated with aqueous sodium nitrite solution in the presence of copper, the product formed is:
The structure of MnO\(_4^-\) ion is:
Which of the following statement is correct?
The decreasing order of basic strength of amines in aqueous medium is: