Chemistry Question Bank

The IUPAC name of the following compound is CH2 = C = CH — CH3 (CPMT 2011)

Which of the following species is not electrophilic in nature? (AIPMT 2010)

At room temperature, the eclipsed and staggered forms of ethane cannot be isolated because (AFMC 2010)

The total number of isomers of C4H7OH is (CPMT 2010)

Which of the following species is paramagnetic in nature? (CMC 2010)

Which of the following is the most stable carbocation? (CPMT 2010) (a) C H CH (b) CH C

The correct order of acidity of the following compounds is (CPMT 2010)

IUPAC nomenclature of is (AFMC 2010)

In the following the most stable conformation of n- butane is (AIPMT 2010) (a) (b) (c) (d)

Which of the following is an aromatic compound ? (AFMC 2009) (a) (b) (c) (d)

The number of metamers of the compound with molecular formula C4H10O is (AFMC 2009)

Which is the strongest acid ? (CPMT 2009)

For (i) I–, (ii) Cl–, (iii) Br–, the increasing order of nucleophilicity would be (AIPMT 2007)

Which of the following compounds will not exhibit cis-trans isomerism ? (PMET 2006) (a) (b) (c) (d)

The IUPAC name of is (AIPMT 2006)

These two conformers exist in a state of dynamic equilibrium. Which one is more stable?

Among these, positional isomers are

I. CH CH CH CH CH II. CH CH CH CH | CH III. CH | CH C CH | CH Among these, chain isomers are

Among these functional isomers are

Among these III is the chain isomer of

Among these, I is the chain isomer of

Compare acidic strength:

Assertion: Cyclopentadienyl anion is much more stable than allyl anion. Reason: Cyclopentadienyl anion is aromatic in character.

Which among the following statements are true with respect to electronic displacement in a covalent bond ? (1) Inductive effect operates through pi bond (2) Resonance effect operates through sigma bond (3) Inductive e…

In which of the following molecule the resonance effect is not present? (a) (b) (c) (d)