List of top Questions asked in KEAM

Uncertainty principle is valid for:

No two electrons in an atom can have the same set of quantum numbers. This is known as:

The number of electrons in one mole of methane (CH\(_4\)) is:

Which of the following statement is incorrect about Bohr's model of atom?

The elemental analysis of an organic compound gave:
C: 38.71%, H: 9.67%, O: 51.67%. What is the empirical formula of the compound?

Two masses connected in series with two massless strings are hanging from a support as shown in the figure. Find the tension in the upper string.

The three vertices of a triangle are \( (0,0), (3,1) \) and \( (1,3) \). If this triangle is inscribed in a circle, then the equation of the circle is:

Let \( U \) be the universal set and let \( A \) and \( B \) be any two subsets of \( U \). If \( n(U) = 25, n(A) = 14, n(A \cap B) = 6 \) and \( n(A \cup B) = 20 \), then \( n(B') \) is equal to:

Five digit number is formed using the digits 0, 1, 2, 3, 4, and 5 without repetitions. Number of five digit numbers which are divisible by 10 is:

The 25th term of 9, 3, 1, \( \frac{1}{3} \), \( \frac{1}{9} \), ... is:

On heating an aldehyde with Fehling's reagent, a reddish-brown precipitate is obtained due to the formation of:

Compound 'A' is obtained by the reaction of benzyl chloride with magnesium metal in dry ether followed by treatment with water. What is the compound 'A'?

The major product obtained in the dehydration of ethanol in the presence of \( \text{H}_2\text{SO}_4 \) at 413 K is:

Which of the following compounds has the highest boiling point?

The magnetic force acting on a charged particle carrying a charge of \( 3 \, \mu C \) in a magnetic field of 5 T acting in the \( y \)-direction, when the particle velocity is \( ( \hat{i} + \hat{j} ) \times 10^5 \, \text{ms}^{-1} \), is:

A galvanometer of resistance 100 \(\Omega\) gives a full scale deflection for a current of 1 mA through it. The resistance required to convert it into a voltmeter which can read up to 2 V is:

Three point charges \(4q\), \(Q\), and \(q\) are placed in a straight line of length \(L\) at points 0, \(L/2\), and \(L\) respectively. The net force on charge \(q\) is zero. The value of \(Q\) is:

The electric field inside a uniformly charged spherical shell of radius \( R \) is:

The carbohydrate found in yeast is

The IUPAC name of allylamine is

In which of the following liquid inter molecular hydrogen bonding does not exist?

Benzoyl chloride is converted to benzaldehyde by

Denatured alcohol with colour and foul smell is made now a days by mixing ethanol with

Phenol is treated with $H_{2}SO_{4}$ to give a product 'X' which on treatment with conc. $HNO_{3}$ gives compound 'Y'. The compounds 'X' and 'Y' are respectively:

$S_{N}1$ reaction is most favoured by: