List of top Chemistry Questions on carbonyl compounds asked in MET

The major product \(Y\) in the following reaction is:

Which of the following reaction does not form benzaldehyde as product?

Out of the given compounds, the number of compounds which are weaker acids than benzoic acid are

The reagent which distinguishes formic acid and acetic acid is

The most susceptible to nucleophilic attack at the carbonyl group among the given compounds is

A sample of ammonium phosphate (NH\(_4\))\(_3\)PO\(_4\) contains 3.18 moles of H-atom. The number of moles of O-atom in the sample is

In the following compound keto group is at position

Calculate the electronegativity of chlorine from bond energy of Cl-F bond (61 kcal mol\(^{-1}\)), F-F (38 kcal mol\(^{-1}\)) and Cl-Cl bond (58 kcal mol\(^{-1}\)) and electronegativity of fluorine 4.0 eV

Screening effect is not observed in

The type of hybridisation of P atom in PCl\(_5\), PCl\(_4^+\) and PCl\(_6^-\) is (respectively)

Calculate second electron affinity of oxygen for the process: O\(^-\)(g) + e\(^-\)(g) \(\rightarrow\) O\(^{2-}\)(g) using the following data:
(i) Heat of sublimation of Mg(s) = +147.7 kJ mol\(^{-1}\)
(ii) Ionisation energy of Mg(g) to form Mg\(^{2+}\)(g) = +2189.0 kJ mol\(^{-1}\)
(iii) Bond dissociation energy for O\(_2\) = +498.4 kJ mol\(^{-1}\)
(iv) First electron affinity of O(g) = -141.0 kJ mol\(^{-1}\)
(v) Heat of formation of MgO = -601.7 kJ mol\(^{-1}\)
(vi) Lattice energy of MgO = -3791.0 kJ mol\(^{-1}\)

Aldehyde not showing Cannizzaro’s reaction is:

Both HCHO and CH3CHO give similar reactions with all the reagents except:

CH3COOH \( \xrightarrow{NH_3} \Delta \)? The product of the reaction is isomeric with:

The reaction: \( R-C=O \, Z^- + Na^+ \rightarrow R-C=O \, Na + Z^- \) is fastest when Z is:

Benzaldehyde condenses with N,N-dimethyl aniline in presence of anhydrous ZnCl2 to give:

The product of the following reaction,
{C$_6$H$_5$COCH$_2$Br$_2$ + OH$^-$}.....

Two luminous point sources separated by a certain distance are at 10 km from an observer. If the aperture of his eye is $2.5\times10^{-3}$ m and the wavelength of light used is 500 nm, the distance of separation between the point sources just seen to be resolved is

2 g of a radioactive sample having half-life of 15 days was synthesised on 1st Jan 2009. The amount of the sample left behind on 1st March, 2009 (including both the days) is

Continuous emission spectrum is produced by

In a Young's double slit experiment, if the distance between the slits is halved and the distance of the screen from the slits is doubled, then the fringe width will:

The unit of Planck's constant is:

Which reaction intermediate is formed during the condensation reaction between acetaldehyde and formaldehyde?

Which reaction intermediate is formed during the condensation reaction between acetaldehyde and formaldehyde?