List of top Chemistry Questions asked in CUET (UG)

In an electrochemical cell, the standard electrode potential of Zn$^{2+}$/Zn is $-0.76\, \text{V}$ and that of Cu$^{2+}$/Cu is $+0.34\, \text{V}$. What is the standard EMF of the cell?

The coordination number of the central metal ion in $[ \text{Fe(CN)}_6 ]^{4-}$ is:

For a spontaneous process at constant temperature and pressure, which of the following is true?

Which of the following molecules has the highest bond angle?

For a first-order reaction, the time required to reduce the concentration of the reactant to one-fourth of its initial value is 20 minutes. What is the half-life of the reaction?

Which of the following gases will deviate most from ideal behavior at high pressure?

The total number of ions produced from the complex $ [Cr(NH_3)_6]Cl_3 $ in aqueous solution will be?

Arrange the following in decreasing order of number of molecules contained in:
(A) 16 g of $ O_2 $
(B) 16 g of $ CO_2 $
(C) 16 g of $ CO $
(D) 16 g of $ H_2 $

The oxidation number of Co in complex $ [Co(H_2NCH_2CH_2NH_2)_3]_2(SO_4)_3 $ is?

Which of the following compounds will be repelled when placed in an external magnetic field?

The gold number range of some of the lyophilic colloids is given below:
A: 0.005 - 0.01, B: 0.15 - 0.25, C: 0.04 - 1.0, D: 15 - 25.

In the following table, match the reactants given in List-I with the correct product in.List-II as per the reaction of hydration of alkene under acidic conditions.

$\text{Reaction of aniline with conc. HNO}_3 \text{ and conc. H}_2\text{SO}_4 \text{ at 298 K will produce 47\% of:}$

Vapour pressures of pure liquids 'A' and 'D' are 500 mm Hg and 800 mm Hg, respectively.The binary solution of ’A’ and ’D’ boils at 50◦C and 700 mm Hg pressure.The mole percentage of D in the solution is:

Match List-I with List-II:

The increasing order of acidity of the following compounds based on pKa values:
(A) BrCH$_2$COOH
(B) ClCH$_2$COOH
(C) FCH$_2$COOH
(D) HCOOH

Arrange the following rate constant units in increasing order of their order of reaction:(A) sec^-1
(B) mol L^-1 sec^-1
(C) mol^-1 L sec^-1
(D) mol^-1 L² sec^-1
Choose the correct answer from the options given below:

The spin-only magnetic moment of Hexacyanomanganate(II) ion is.........BM

Identify the correct order of organic compounds in the following chemical reaction:

(A) CH₃MgBr
(B) CH₃Br
(C) CH₃Cl
(D) CH₄
Choose the correct answer from the options given below:

The total number of ions produced from the compound $\text{Cr}(\text{NH}_3)_6]\text{Cl}_3$ in aqueous solution is:

Which of the following compounds will be repelled when placed in an external magnetic field?