List of top Chemistry Questions asked in UPSEE

Which of the following does not show a resonance effect

The $E _{\text {red }}^{\circ}$ of $Ag,\, Cu ,\, Co$ and $Zn$ are $0.799$ $0.337,-0.277$ and $-0.762\, V$ respectively, which of the following cells will have maximum cell emf?

Which of the following does not depend on the attraction of the bonding pair towards the nucleus.

In activation energy for a simple Chemical reaction $A \to B$ is $E_{a}$ in forward direction. The activation energy for reverse reaction

On long standing the bleaching powder undergoes auto-oxidation. The products formed are

Which of the following oxide is of acidic nature.

What will be the value of $\Delta G$ and $\Delta G ^{\circ}$ for the reaction, $A + B \rightleftharpoons C + D$ at $27^{\circ} C$ for which $K=10^{2}$ ?

The reaction between p-methyl benzaldehyde and conc. NaOH is an example of

In which of the following changes entropy decreases.

For a complex, $MX_3Y_3$ possessing trigonal prismatic geometry, the number of possible isomer is

Methemoglobinemia is caused due to the presence of in excess of which of the following in drinking water?

Which of the following is not an example of addition polymer

Which reagent is capable of giving test both of Aldehyde and ketones

Which among the following compounds will have meso form

How benzene is converted into n - propyl benzene

Ferric chloride is used to stop bleeding in cuts because

$CH_3MgI$ will give methane with

Which of the following reactions is a redox reaction

Which one of the following has (have) octahedral geometry ? (i) $SbCl^{-}_6$ (ii) $SnCl^{2-}_6$ (iii) $XeF_6$ (iv) $IO^{5-}_6$

Which of the following compounds will exhibit geometrical isomerism?

$A\, 6\%$ solution of sucrose $C_{22}H_{22} O_{11}$ is isotonic with $3\%$ solution of an unknown organic substance. The molecular weight of unknown organic substance will be:

Identify the Br??sted acid in the following equation: $PO _{4}^{3-}+ H _{2} O (l) \longrightarrow HPO _{4}^{2-}(a q)+ OH ^{-}(a q)$

For the reaction $2 HI (g) \rightleftharpoons H _{2}(g)+ I _{2}(g)$ the degree of dissociation $(\alpha)$ of HI(g) is related to equilibrium constant $K_p$ by the expression:

The number of grams/weight of $NH_4Cl$ required to be added to 3 liters of $0.01\, M\, NH_3$ to prepare the buffer of $pH=9.45$ at temperature $298\, K$ ($K_b$ for $NH_3$ is $1.85 \times 10^{-5}$)

Which of the following is a monomer of Dacron: