List of top Questions asked in CUET (UG)

An alkyl halide with molecular formula C$_5$H$_11$Br on dehydrohalogenation gives two isomeric alkenes X and Y with formula C$_5$H$_10$. On reductive ozonolysis, X and Y give four compounds CH$_3$CHO, (CH$_3$)$_2$CHO, CH$_3$CO, HCHO. The alkyl halide is:

Which of the following is not an expression of Dalton's law of partial pressures?

Which of the following electrolytes will have maximum coagulating value for AgI/Ag$^+$ sol?

The vapor pressure curve of the mixture of ethanol and acetone is higher than its constituents because:

Identify 'X' along with the oxidation state of the halogen in the given reaction:
\[ 3\text{Cl}_2 + 6\text{NaOH} \rightarrow 5\text{NaCl} + X + 3\text{H}_2\text{O} \quad \text{(hot and conc.)} \]

The oxoacid of sulphur which has a lone pair of electrons on the sulphur atom is:

The half-life of a first-order reaction is 25 minutes. Its rate constant is:

Which alloy is used for making bullets and lighter flints?

Aspartame is the most successful artificial sweetener but is only limited to cold food and cold drinks because:

The minimum concentration of an electrolyte in millimoles per litre which is required to cause the precipitation of a sol in two hours is called as:

In the cyanide extraction process of silver, the oxidising and reducing agents used are:

In amines, the nitrogen atom is A and B hybridised, making geometry of amines as C. Then A, B, and C respectively are:

Acetaldehyde and benzaldehyde can be best distinguished by:

Which of the following reactions will not produce ketones?

Basic hydrolysis of esters produces:

Chemical formula of laughing gas is:

The quantity of charge required to obtain 2 mol of Mn$^{2+}$ from MnO$_4^{-}$ is:

Ammonia is manufactured by:
\[ \text{N}_2(g) + 3\text{H}_2(g) \rightleftharpoons 2\text{NH}_3(g) \quad \Delta H_f^\circ = -46.1 \, \text{kJ/mol} \] The various steps involved are:
(A) Condensation of mixture of gases
(B) Passing the gaseous mixture over catalyst
(C) Compression of the mixture of gases
(D) Recirculation of the gaseous mixture
Choose the correct answer from the options given below:

The standard reduction potential for Sn$^{4+}$/Sn$^{2+}$ is +0.15 V and for Cr$^{3+}$/Cr is -0.74 V. These two half-cells, coupled in their standard states, are connected to make a cell. The galvanic cell can be correctly represented by:

In case of phosphorus, PCl$_{3}$ and PCl$_{5}$ are possible while nitrogen only forms NCl$_{3}$ and not NCl$_{5}$. This is due to: