Organic chemistry-some basic principles and techniques practice · Mixed difficulty

Halogens in an organic compound can be detected by:

Assertion: The compounds having double bond between carbon atoms always show geometrical isomerism.

Reason: The rotation of groups or atom about carbon-carbon double bond is restricted.

Lassaigne's test is not used for the detection of the element_______in the organic compound

Petroleum refining involves:

For esters, prefix used in IUPAC nomenclature is

0.58 g of hydrocarbon on combustion gave 0.9 g water. The percentage of carbon is about :

The correct order of increasing acid strength of the compounds (A) $\mathrm{CH}_3 \mathrm{COOH},$
(B) $\mathrm{MeOCH}_2 \mathrm{C O O H},$ (C) $\mathrm{CF}_3 \mathrm{COOH},$ (D) $\left(\mathrm{CH}_3\right)_2 \mathrm{CHCOOH}$ is

An organic compound on heating with CuO produces $\mathrm{C}{\mathrm{O}_2}$ but no water. The organic compound may be

Statement I: Diffrent number of electron pairs are present in resonance structures.

Statement II: Resonance structures do not differ in the location of electrons around the constituent atoms.

Strongest acid among the following

Statement I : $C{H_3} - \mathop {\mathop {CH}\limits_| }\limits_{OH} - CH = CH - C{H_3}$ compound has three stereocentres
Statement II : Chiral centres have four different C-atoms

The minimum number of carbon atoms which a ketone may contain is :

${\text{C}}{{\text{H}}_3} - \mathop {{\text{CH}}}\limits_{\begin{array}{cccccccccccccccccccc} {\text{|}} \\ {{\text{C}}{{\text{H}}_{\text{3}}}} \end{array}} - {\text{CHO and C}}{{\text{H}}_3} - {\text{C}}{{\text{H}}_2} - \mathop {{\text{CH}}}\limits_{\begin{array}{cccccccccccccccccccc} | \\ {{\text{C}}{{\text{H}}_{\text{3}}}} \end{array}} - {\text{CHO}}$ are a pair of

The structures,

$\mathrm{C}{\mathrm{H}_3}-\mathrm{CH}\left( {\mathrm{N}{\mathrm{H}_2}} \right)-\mathrm{C}{\mathrm{H}_2}-\mathrm{C}{\mathrm{H}_2}\mathrm{C}{\mathrm{H}_3}$ and

$\mathrm{C}{\mathrm{H}_3}-\mathrm{C}{\mathrm{H}_2}-\mathrm{CH}\left( {\mathrm{N}{\mathrm{H}_2}} \right)-\mathrm{C}{\mathrm{H}_2}\mathrm{C}{\mathrm{H}_3}$ represent:

Which of the following fact(s) explain as to why p-nitrophenol is more acidic than phenol?
i) –I effect of nitro group
ii) Greater resonance effect of p-nitrophenoxy group
iii) Steric effect of bulky nitro group.

Aqueous solution of a salt $+{MgSO}_4$ solution $\rightarrow$ no ppt. in cold $\xrightarrow{{{\text{Heating}}}}$ a white ppt. appears. The salt contains the acidic radical:

A neutral divalent carbon intermediate produced by the removal of two attached atoms is called :

Correct IUPAC name of $\left[ {Ni(en)B{r_2}{{(PP{h_3})}_2}} \right]$ is

Assertion (A): Components of a mixture of red and blue inks can be separated by distributing the components between stationary and mobile phases in paper chromatography.

Reason (R): The coloured components of inks migrate at different rates because paper selectively retains different components according to the difference in their partition between two phases.

Among the following the most stable compound is:

Increasing order of expected keto content

In Dumas’ method of estimation of nitrogen 0.35 g of an organic compound gave 55mL of nitrogen collected at 300 K temperature and 715 mm pressure. The percentage composition of nitrogen in the compound would be: (Aqueous tension at 300 K = 15 mm)

Which of the following organic compound was synthesised by $\mathrm{F}$. Wohler from an inorganic compound?

The effect involving the complete transfer of a shared pair of electrons to one of the atoms joined by a multiple bond at the requirement of attacking reagent is called :

Benedict’s solution provides:

In which of the following ways does the hydride ion tend to function?

The IUPAC name of the compound having the formula$\mathrm{CH} \equiv \mathrm{\;C\;}-\mathrm{\;CH} = \mathrm{C}{\mathrm{H}_2}$ is :

In sulphur detection of an organic compound, sodium nitroprusside solution is added to sodium extract.
Formation of violet colour is due to

Which of the following metal sulphite is white
colour?

Electromeric effect is a