List of top Questions asked in UPCATET

Optical isomerism is shown by:
Benzene on reaction with benzoyl chloride in the presence of anhydrous \(\mathrm{AlCl}_3\) forms:
How many structural isomers does \(\mathrm{C}_7\mathrm{H}_{16}\) have:
Molecularity of a reaction can be:
Cell constant is equal to:
In which of the following elements the 6d orbital is vacant:
Correct order of first ionisation energy of B, In, Ga, and Al is:
Which among the following is not an aromatic species:

In the given circuit, the equivalent resistance between points A and D is: 

Which of the following aldehydes does not form iodoform on heating with $\mathrm{I_2}$ and alkali?
Oxidation number of hydrogen is (-1) in:
The group which shows \(-I\) and \(-R\) effect is:
Hybridisation of \(\mathrm{Ni}\) in \(\left[\mathrm{Ni}(\mathrm{CN})_4\right]^{2-\) is:}
Solubility of \(\mathrm{AgCl}\) in \(10^{-2} \text{M} \mathrm{NaCl}\) solution is (\( K_{sp_{\mathrm{AgCl}}} = 1.8 \times 10^{-10} \)):
In the balanced redox reaction \(\mathrm{Cr}_2\mathrm{O}_7^{2-} + \mathrm{SO}_3^{2-} \longrightarrow \mathrm{Cr}^{3+} + \mathrm{SO}_4^{2-}\), the ratio of the number of \(\mathrm{Cr}_2\mathrm{O}_7^{2-}\) ions to \(\mathrm{SO}_4^{2-}\) ions is:
Polar molecule among the following is:
Minimum bond length is of:
No work is done during free expansion of an ideal gas:
If a radiation of energy \( 4.25 \, \text{eV} \) falls on a metal surface, then the maximum kinetic energy of ejected electrons will be (work function of metal is \( 2.25 \, \text{eV} \)).
Incorrect match of IUPAC symbol of elements with its respective atomic number is:
Statement (A): Alkyl halides are not soluble in water.
Statement (B): Alkyl halides do not form H-bonds with water molecules through alkyl halide, but they are polar in nature. In light of the above statements, choose the most appropriate answer from the options given below:
Relation between rate constant and half-life for a first-order reaction is:
The given reaction is known as: \[ \text{PhCH}_2\text{CN} + \text{SnCl}_2 + \text{HCl} \xrightarrow{\text{H}_3\text{O}^+} \text{PhCH}_2\text{CH=NH} \]
Given below are two statements:
Statement I: Propene on treatment with diborane gives an addition product with the formula \( \left( (CH_3)_2 CH \right)_3 B \)
Statement II: Oxidation of \( \left( (CH_3)_2 CH \right)_3 B \) with Hydrogen peroxide in the presence of NaOH gives propan-2-ol
In the light of the above statements, choose the most appropriate answer from the options given below:
If an 18 $\Omega$ resistance wire is bent into the shape of an equilateral triangle, then the equivalent resistance across the ends of any side = ?