List of top Questions asked in JEE Main

If three distinct numbers a,b and c are in GP and the equation ax2+2bx+c=0 and dx2+2ex+f=0 have a common root, then which of the following statements is correct?

Let $S_n$ denote the sum of the first $n$ terms of an $A.P$. If $S_4 = 16$ and $S_6 = -48$, then $S_{10}$ is equal to :
The product formed in the reaction of cumene with $O_2$ followed by treatment with dil. $HCl$ are :
Which is the most suitable reagent for the following transformation ?
The transition element that has lowest enthalpy of atomisation, is :
The statement that is INCORRECT about the interstitial compounds is :
The correct order of the first ionization enthalpies is:
The correct order of the spin-only magnetic moment of metal ions in the following low spin complexes, ${[V(CN)_6]^{4-}, [Fe(CN)6]^{4-}, [Ru (NH3)6]^{3+},}$ and ${[Cr(NH3)6]^{2+}}$, is :
Among the following compounds most basic amino acid is :
Amylopectin is composed of :
Glucose and Galactose are having identical configuration in all the positions except position.
Which of the following statements is not true about RNA?
Which of the following compounds will show the maximum enol content?
What is the IUPAC name of the following compound ?
The IUPAC name of the following compound is:
Consider the following reversible chemical reactions : ${A_2(g) + Br_2 (g) <=>[K_1] 2AB(g) }$ ....(1) ${ 6AB(g) <=>[K_2] 3A_2 (g) + 3B_2(g) }$ ...(2) The relation between $K_1$ and $K_2$ is :
What is the molar solubility of $Al(OH)_3$ in $0.2\, M\, NaOH$ solution ? Given that, solubility product of $Al(OH)_3 = 2.4 \times 10^{-24}$ :
Which amongst the following is the strongest acid ?
$5$ moles of $AB_2$ weigh $125 \times 10^{-3}\; kg$ and $10$ moles of $A_2B_2$ weigh $300 \times 10^{-3} \; kg$. The molar mass of $A(M_A)$ and molar mass of $B(M_B) $ in $kg\, mol^{-1}$ are :
$50\, mL$ of $0.5\, M$ oxalic acid is needed to neutralize $25\, mL$ of sodium hydroxide solution. The amount of $NaOH$ in $50\, mL$ of the given sodium hydroxide solution is :
For a reaction, $N_2(g) + 3H_2(g) \rightarrow 2NH_3(g)$; identify dihydrogen $(H_2)$ as a limiting reagent in the following reaction mixtures.
During compression of a spring the work done is $10\,kJ$ and $2\,kJ$ escaped to the surroundings as heat. The change in internal energy, $\Delta\, U(in\,kJ)$ is:
Enthalpy of sublimation of iodine is $ {24 \; cal \; g^{-1}}$ at $200^{\circ}C$. If specific heat of $I_2(s)$ and $I_2(vap)$ are $0.055$ and $0.031\, cal\, g^{-1}K^{-1}$ respectively, then enthalpy of sublimation of iodine at $250^{\circ}C$ in $cal\, g^{-1}$ is :
For diatomic ideal gas in a closed system, which of the following plots does not correctly describe the relation between various thermodynamic quantities ?
For silver, $ {C_{p}(JK^{-1} mol^{-1}) = 23 + 0.01T}$. If the temperature (T) of $3$ moles of silver is raised from $300\,K$ to $1000\, K$ at $1\, atm$ pressure, the value of $\Delta H$ will be close to