List of top Questions asked in BITSAT

The free space inside a current carrying toroid is filled with a material of susceptibility \( \chi = 2 \times 10^{-2} \). The percentage increase in the value of magnetic field inside the toroid will be:
The ratio of average electric energy density and total average energy density of an electromagnetic wave is:

The probability density plots of 1s and 2s orbitals are given in figure. 

 

The density of dots in a region represents the probability density of finding electrons in the region. On the basis of the above diagram, which of the following statements is incorrect?

Element with electronic configuration \( 1s^2 2s^2 2p^6 3s^2 3p^6 3d^{10} 4s^2 4p^6 4d^{10} 5s^2 5p^3 \) belongs to the following group of the periodic table:
Which of the following pairs will form the most stable ionic bond?

How much ethyl alcohol must be added to 1 litre of water so that the solution will freeze at \(-14^\circ \text{C}\)? 

(Kf for water = 1.86 °C/mol)

The conductivity of a weak acid HA of concentration 0.001 mol L\(^{-1}\) is \( 2.0 \times 10^{-5} \, \text{S cm}^{-1} \). If \( \Lambda_m^\circ ({HA}) = 190 \, \text{S cm}^2 \text{mol}^{-1} \), the ionization constant (\( K_a \)) of HA is equal to _______ \( \times 10^{-6} \).
Plots showing the variation of the rate constant (k) with temperature (T) are given below. The plot that follows the Arrhenius equation is:
Which of the following method is used for coagulation of the sol?
The reaction that does NOT take place in a blast furnace between 900K to 1500K temperature range during extraction of iron is:
Kinetic theory of gases proves:
If enthalpies of formation of \( {C}_2{H}_4(g) \), \( {CO}_2(g) \) and \( {H}_2{O}(l) \) at 25°C and 1 atm pressure are 52, 394 and -286 kJ/mol respectively, the change in enthalpy for combustion of \( {C}_2{H}_4 \) is equal to:
The photochemical smog does not generally contain:

For the separation of two immiscible liquids, which method is used?

What is \( x \) in the following reaction? \[ {Al} (s) + {NaOH} (aq) + {H}_2O (l) \rightarrow x + {H}_2 (g) \]
Which of the following will precipitate first when an aqueous solution containing sulphate ions is added?
Ionic hydrides react with water to give:
The drug used as an antidepressant is:
Melamine plastic crockery is a copolymer of:
The helical structure of a protein is stabilized by:

Which of the following factors affect the basic strength of amines? 
(i) Inductive effect
(ii) Steric hindrance
(iii) Solvation effect
(iv) Solubility in organic solvents
 

Find out compound B in the given reaction sequence: \[ {C}_6{H}_6 + {CH}_3X \xrightarrow{{AlCl}_3} A \xrightarrow{{CrO}_3 { in } (CH_3CO)_2O / H_3O^+} B \]

Among the given halides, which one will give the same product in both S\(_N1\) and S\(_N2\) reactions? 

Among the ligands \( {NH}_3, \, {en}, \, {CN}^-, \, {CO} \), the correct order of their increasing field strength is:
The \( {S} - {S} \) bond is not present in: