Organic Chemistry Some Basic Principles and Techniques Test

Result

Organic Chemistry Some Basic Principles and Techniques Test - 72

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
1 / -0

Number of $$\pi$$ electrons in conjugation for these compounds will be respectively:

A
$$8, 6, 6, 6$$

B
$$6, 4, 6, 6$$

C
$$6, 6, 6, 6$$

D
None of the above
Question 2
1 / -0

Which of these functional groups is not present in the below compound given

A
Nitrile

B
Acid

C
Amine

D
Ester
Question 3
1 / -0

Which among the following is not correctly matched with their colour?
$$\text {Compound}$$ $$\text {Colour}$$

A
$$ Na_4[Fe(CN)_5NOS ] $$ purple

B
$$ Fe_4[Fe(CN)_6]_3 $$ blue

C
$$ Fe(CNS)_3 $$ blood red

D
$$ AgCl $$ light yellow

Solution

$$A)\underset{from\ sodium\ extracted}{Na_{2}S}+Na_{2}[Fe(CN)_{5}NO]\rightarrow \underset{purple\ colouration}{Na_{4}[Fe(CN)_{5}NOS]}$$

$$B) Na_{4}[Fe(CN)_{6}]+Fe^{+3}\rightarrow \underset{Ferric\ ferrocynid\\ \\ (blue\ colour)}{Fe_{4}[Fe(CN)_{6}]_{3}}$$

$$C)Fe^{+3}+3NaSCN \rightarrow \underset{\ \ Ferric\ thiocynate\\ \\ (Blood\ red\ colouration)}{Fe(SCN)_{3}}$$

$$D)Na+Cl\xrightarrow[From\ o.c]{\Delta }NaCl\xrightarrow[]{AgNO_{3}}\underset{white\ ppt}{AgCl}+NaNO_{3}$$

$$\therefore AgCl$$ is incorrect match with its colour

$$\mathbf{Hence\ correct\ answer\ is\ option\ (D)}$$
Question 4
1 / -0

A person is suffering from Diabetes, which get confirmed by testing his urine with Benedict's reagent. The organic compound and functional group present in the urine of suffering person is :

A
$$sucrose - COOH$$

B
Glucose, $$- \overset{O}{\overset{||}{C}} -$$

C
Glucose, $$- \overset{O}{\overset{||}{C}} - H$$

D
sucrose $$- \overset{O}{\overset{||}{C}} -$$
Question 5
1 / -0

Chromyl chloride gives yellow ppt. when it reacts with respectively_________

A
$$Cu(OH)_2,PbNO_3$$

B
$$NaOH,(CH_2COO)_2Ca$$

C
$$NaOH,(CH_3COOO)_2Pb$$

D
$$KOH,PbSO_4$$

Solution

$$CrO_2Cl_2+4NaOH\rightarrow Na_2CrO_4+2NaCl+2H_2O$$
Chromyl chloride

$$Na_2CrO_4+(CH_3COO)_2Pb\rightarrow PbCrO_4+2CH_3COONa$$
yellow ppt

Option C is correct.
Question 6
1 / -0

Which functional group is there in methyl ethanoate?

A
Alcohol

B
Halide

C
Ketone

D
Ester
Question 7
1 / -0

The correct order of +M effect of 'N' containing functional group on benzene ring amongst the given compounds is:

A
$$I > II > IV > III$$

B
$$II > I > III > IV$$

C
$$I > II > III > IV$$

D
$$IV > III > II > I$$
Question 8
1 / -0

Which compound cannot give a precipitate with an ammoniacal silver nitrate solution?

A
$$CH_3-C\equiv C-CH_3$$

B
$$CH_3-C(Me)C\equiv CH$$

C
$$C_2H_5-C\equiv CH$$

D
$$CH_3-C\equiv CH$$

Solution
Question 9
1 / -0

Directions For Questions

An aromatic compound $$(A), C_{9}H_{12}O$$ was subjected to a series of test in the laboratory. It was found that this compound:
(i) does not form silver mirror with Tollens' reagent.
(ii) rotates the plane of polarised light.
(iii) reacts with sodium metal to evolve hydrogen gas.
(iv) does not decolourise pink colour of bromine water.
(v) reacts with hot $$KMnO_{4}$$ to form monocarboxylic acid $$'B'$$ which on decarboxylation gives benzene.
(vi) reacts with Lucas reagent in about $$5$$ min.
(vii) reacts with $$I_{2}$$ and $$NaOH$$ to produce yellow coloured precipitate of the compound $$(C)$$.
(viii) loses its optical activity due to formation of compound $$(D)$$ on reaction with Red $$P$$ and $$HI$$.
Answer the following questions:

...view full instructions

The functional groups present in the compound $$(A)$$ is

A
Aldehydic $$(-CHO)$$

B
Ketonic $$(-\overset {\overset {O}{\parallel}}{C}-)$$

C
Alcoholic $$(-OH)$$

D
Alkoxy group $$(-OR)$$

Solution
Question 10
1 / -0

The reaction
$$ (CH_3)_3 C-Br \overset { H_ 2O }{ \longrightarrow } (CH_3)_3 C-OH $$ is

A
Elimination reaction

B
Substitution reaction

C
Free redical reaction

D
Displacement reaction

Solution

The reaction $$ (CH_3)_3 C-Br \overset { H_ 2O }{ \longrightarrow } (CH_3)_3 C-OH $$ is an example of Substitution reaction.

Hence, Option "B" is the correct answer.