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Which of the following is metamer of the given compound \(( X) \)?

The technique used for purification of steam volatile water immiscible substances is:

The order of relative stability of the contributing structure is:

Choose the correct answer from the options given below:

Total number of aromatic compound among the following compounds is ___________.

Number of \( \sigma \) and \( \pi \) bonds present in ethylene molecule is respectively:

The total number of 'Sigma' and 'Pi' bonds in \( 2 \)-formylhex-\( 4 \)-enoic acid is __________.

The functional group that shows negative resonance effect is:

Relative stability of the contributing structures is:

Total number of optially active compounds from the following is _____________.

10.

The fragrance of flowers is due to the presence of some steam volatile organic compounds called essential oils. These are generally insoluble in water at room temperature but are miscible with water vapour in vapour phase. A suitable method for the extraction of these oils from the flower is:

11.

The adsorbent used in adsorption chromatography is/are:
A. silica gel B. alumina C. quick lime D. magnesia
Choose the most appropriate answer from the options given below:

12.

Which of the following statements are correct?
A. Glycerol is purified by vacuum distillation because it decomposes at its normal boiling point.
B. Aniline can be purified by steam distillation as aniline is miscible in water.
C. Ethanol can be separated from ethanol water mixture by azeotropic distillation because it forms azeotrope.
D. An organic compound is pure, if mixed M.P. is remain same.
Choose the most appropriate answer from the options given below:

13.

Which among the following is incorrect statement?

14.

Using the given figure, the ratio of \( R_f \) values of sample A and sample C is \( x \times 10^{-2} \). Value of \( x \) is \( \_ \_ \_ \_ \_ \).

15.

The molecular formula of second homologue in the homologous series of mono carboxylic acid is:

16.

Which one of the following will show geometrical isomerism?

17.

The correct nomenclature for the following compound is:

18.

IUPAC name of following compound \( (P) \) is :

19.

Total number of compounds with Chiral carbon atoms from following is __________ .

\(\text{CH}_3 - \text{CH}_2 - \text{CH}(\text{NO}_2) - \text{COOH}\)
\(\text{CH}_3 - \text{CH}_2 - \text{CHBr} - \text{CH}_2 - \text{CH}_3\)
\(\text{CH}_3 - \text{CH}(\text{I}) - \text{CH}_2 - \text{NO}_2\)
\(\text{CH}_3 - \text{CH}_2 - \text{CH}(\text{OH}) - \text{CH}_2\text{OH}\)

20.

‘Adsorption’ principle is used for which of the following purification method?

21.

The interaction between \( \pi \) bond and lone pair of electrons present on a adjacent atom is responsible for:

22.

The incorrect statement regarding the geometrical isomers of \( 2 \)-butene is:

23.

Number of carbocations from the following that are not stabilized by hyperconjugation is ______.

24.

In the given compound, the number of \( 2^\circ \) carbon atom/s is ______.

25.

Number of moles of methane required to produce \( 22 \, \mathrm{g} \; \mathrm{CO_2(g)} \) after combustion is \( x \times 10^{-2} \) moles. The value of \( x \) is ______.

26.

The shape of carbocation is:

27.

According to IUPAC system, the compound is named as:

28.

The set of meta directing functional groups from the following sets is:

29.

Identify structure of \( 2,3 \)-dibromo-\( 1 \)-phenylpentane.

30.

The total number of ‘sigma’ and ‘pi’ bonds in \( 2 \)-oxohex-\( 4 \)-ynoic acid is ____________ .

31.

Match List I with List II

Choose the correct answer from the options given below:

32.

Chromatographic technique/s based on the principle of differential adsorption is/are:
A. Column chromatography
B. Thin layer chromatography
C. Paper chromatography
Choose the most appropriate answer from the options given below:

33.

Number of optical isomers for \( 2 \)-chlorobutane ______.

34.

Match List I with List II:

Choose the correct answer from the options given below:

35.

The correct stability order of carbocations is:

36.

In Kjeldahl's method for estimation of nitrogen, \( \mathrm{CuSO_4} \) acts as:

37.

IUPAC name of following compound is:

38.

The correct arrangement for decreasing order of electrophilic substitution for above compounds is:

39.

Given below are two statement:
Statements I : Bromination of phenol in solvent with low polarity such as \( \mathrm{CHCl_3} \) or \( \mathrm{CS_2} \) requires Lewis acid catalyst.
Statement II : The Lewis acid catalyst polarizes the bromine to generate \( \mathrm{Br^+} \).
In the light of the above statements, choose the correct answer from the options given below:

40.

Functional group present in sulphonic acids is:

41.

The number of different chain isomers for \( \mathrm{C}_7\mathrm{H}_{16} \) is \( \_\_\_\_\_\_ \).

42.

Lassaigne’s test is used for detection of:

43.

Correct order of stability of carbocation is:

44.

Number of geometrical isomers possible for the given structure is/are _______.

45.

On a thin layer chromatographic place, an organic compound moved by \( 3.5 \, \text{cm} \), while the solvent moved by \( 5 \, \text{cm} \). The retardation factor of the organic compound is __________ \( \times 10^{-1} \).

46.

Bond line formula of \( \mathrm{HOCH(CN)_2} \) is:

47.

Given below are \( 2 \) statements:
Statement (I): Kjeldahl method is applicable to estimate nitrogen in pyridine.
Statement (II): The nitrogen present in pyridine can easily be converted into ammonium sulphate in Kjeldahl method.
In the light of the above statements, choose the correct answer from the options given below:

48.

Among the given organic compounds, the total number of aromatic compounds is ________.

49.

The incorrect statement regarding conformations of ethane is:

50.

How many compounds among the following compounds show inductive, mesomeric as well as hyperconjugation effects ?

51.

Cyclohexene is ____________ type of an organic compound.

52.

Which of the following molecule/species is most stable?

53.

Match List-I with List-II.

Choose the correct answer from the options given below:

54.

Ionic reactions with organic compounds proceed through:
(A) homolytic bond cleavage (B) heterolytic bond cleavage (C) free radical formation (D) primary free radical (E) secondary free radical
Choose the correct answer from the options given below:

55.

Following Kjeldahl’s method, \( 1 \, \text{g} \) of organic compound released ammonia, that neutralised \( 10 \, \text{mL} \) of \( 2 \, \text{M}\ \, \text{H}_2\text{SO}_4 \). The percentage of nitrogen in the compound is __________ \( \% \).

56.

Given below are two statements:
Statement I: IUPAC name of \( \mathrm{HO-CH_2-(CH_2)_5-CH_2-COCH_3} \) is \( 7 \)-hydroxyheptan-\( 2 \)-one.
Statement II: \( 2 \)-oxoheptan-\( 7 \)-ol is the correct IUPAC name for above compound.
In the light of the above statements, choose the most appropriate answer from the options given below:

57.

Structure of \( 4 \)-Methylpent-\( 2 \)-enal is:

58.

Match List-I with List-II:

List-I (Pair of Compounds)	List-II (Isomerism)
(A) n-propanol and Isopropanol	(I) Metamerism
(B) Methoxypropane and ethoxyethane	(II) Chain Isomerism
(C) Propanone and Propanal	(III) Position Isomerism
(D) Neopentane and Isopentane	(IV) Functional Isomerism

Choose the correct answer from the options given below:

59.

Appearance of blood red colour, on treatment of the sodium fusion extract of an organic compound with \( \mathrm{FeSO_4} \) in presence of concentrated \( \mathrm{H_2SO_4} \) indicates the presence of element/s

60.

A species having carbon with sextet of electrons and can act as electrophile is called:

61.

IUPAC name of following hydrocarbon \( (X) \) is:

62.

The Lassaigne's extract is boiled with dil \( \mathrm{HNO_3} \) before testing for halogens because,

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JEE Main 2024 29th Jan Evening Shift

The total number of 'Sigma' and 'Pi' bonds in \( 2 \)-formylhex-\( 4 \)-enoic acid is __________.

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JEE Mains JEE Advance BITSAT
JEE Mains | PYQ