List of top Chemistry Questions

The incorrect statement regarding chirality is:

Match List - I with List- II.

 List-I (Products formed) List-II (Reaction of carbonyl compound with)
(a)Cyaniohydrin(i)NH2OH
(b)Acetal(ii)RNH2
(c)Schiff’s base(iii)alcohol
(d)Oxime(iv)HCN

Choose the correct answer from the options given below:

Statement I: The boiling points of aldehydes and ketones are higher than hydrocarbons of comparable molecular masses because of weak molecular association in aldehydes and ketones due to dipole - dipole interactions
Statement II: The boiling points of aldehydes and ketones are lower than the alcohols of similar molecular masses due to the absence of H-bonding.
In the light of the above statements choose the most appropriate answer from the options given below:
Which of the following sequence of reactions is suitable to synthesize chlorobenzene?

Match List-I with List-II.

 List - I List - II
(a)Li(i)Absorbent for carbon dioxide
(b)Na(ii)Electrochemical cells
(c)KOH(iii)Coolant in fast breeder reactors
(d)Cs(iv)Photoelectric cell

Choose the correct answer from the options given below:

Statement I: The boiling points of the following hydrides of group 16 elements increases in the order - H2O < H2S < H2Se < H2Te
Statement II: The boiling points of these hydrides increases with increase in molar mass.
In the light of the above statements, choose the most appropriate answer from the options given below:
Which compound amongst the following is not an aromatic compound?
Assertion (A): ICl is more reactive than I2
Reason(R): I-Cl bond is weak than I-I bond
Choose the most appropriate answer from the options given below:
In one molal solution that contains 0.5 mole of a solute, there is
Identify the incorrect statement from the following.
At 298 K, the standard electrode potentials of Cu2+/Cu, Zn2+/Zn, Fe2+/Fe and Ag+/Ag are 0.34 V, - 0.76 V, - 0.44 V and 0.80 V, respectively.
On the basis of standard electrode potential, predict which of the following reaction cannot occur?
Amongst the following which one will have maximum 'lone pair- lone pair' electron repulsions?

Match List - I with List- II.

 List-I (Drug class) List-II (Drug molecule)
(a)Antacids(i)Salvarsan
(b)Antihistamines(ii)Morphine
(c)Analgesics(iii)Cimetidine
(d)Antimicrobials(iv)Seldane
The IUPAC name of the complex [Ag(H2O)2][Ag(CN)2] is:
The incorrect statement regarding enzymes is:
The Kjeldahl' s method for the estimation of nitrogen can be used to estimate the amount of nitrogen in which one of the following compounds?
Which statement regarding polymers is not correct?
\(RMgX + CO_2 (\text{dry})→(\text{ether}) Y (H_3O^+)→ RCOOH\)
What is Y in the above reaction?
Which amongst the following is incorrect statement?

Statement I: Primary aliphatic amines react with HNO2 to give unstable diazonium salts.
Statement II: Primary aromatic amines react with HNO2 to form diazonium salts which are stable even above 300 K.
Choose the most appropriate answer from the options given below:

Which of the following p-V curve represents maximum work done?

Statement I: In the coagulation of a negative sol, the flocculating power of the three given ions is in the order - Al3+ > Ba2+ > Na+
Statement II: In the coagulation of a positive sol, the flocculating power of the three given salts is in the order - NaCl > Na2SO4 > Na3PO4
Choose the most appropriate answer from the options given below:

The lUPAC name of an element with atomic number 119 is
Statement I: The acidic strength of monosubstituted nitrophenol is higher than phenol because of electron withdrawing nitro group.
Statement II: o-nitrophenol, m-nitrophenol and p-nitrophenol will have same acidic strength as they have one nitro group attached to the phenolic ring.
Choose the most appropriate answer from the options given below:
Identify the incorrect statement from the following