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	QPID #4796 (SET 1)		CHEMISTRY NEET DPP Day -11 Subjective
Class/Batch: NEET Crash	Duration: 60 min	Date: 06 Apr,2023	Total Mark:200
Your Name:	Class:	Batch:	Course:

About Examination: CHEMISTRY NEET DPP Day -11

CHEMISTRY: HYDROCARBONS, Alcohols, Phenols and Ethers(Hydroxy compounds and Ethers), Hydrocarbons-Alkenes, Hydrocarbons-Alkynes,

Section 1 (Part-A) 35X4=140

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Question :

Ethyl bromide gives ethylene when reacted with –

ethyl alcohol
dilute H₂SO₄
aqueous KOH
alcoholic KOH

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Question :

Ethyl alcohol is heated with conc. H₂SO₄. The product formed is :

C₂H₆
C₂H₄
C₂H₂

#2580215

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Question :

In the following sequence of reactions, the alkene affords the compound ‘B’

The compound B is

CH₃CH₂CHO
CH₃COCH₃
CH₃CH₂COCH₃
CH₃CHO

#2580226

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Question :

Ethylene reacts with alkaline KMnO₄ to form

Oxalic acid
HCHO
Ethyl alcohol
Glycol

#2580229

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Question :

The reaction of HI with CH3 – CH = CH2 at 400°C yields :

CH₂ I – CH = CH₂
CH₃ – CHI – CH₃
CH₃ – CH₂ – CH₂ I
CH₂I – CH₂ – CH₂I

#2580245

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Question :

The test for unsaturation is confirmed by the decolourisation of which of the following

Iodine water
CuSO₄solution
Bromine water
All of these

#2580257

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Question :

The IUPAC name of the compound CH₃CH = CHC $\equiv$ CH is

Pent-l-yn-3-ene
Pent-4-yn-2-ene
Pent-3-en-1-yne
Pent-2-en-4-yne

#2580288

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Question :

The acetylene molecule contains :

5 sigma bonds
4 sigma and 1 pi bonds
3 sigma and 2 pi bonds
2 sigma and 3 pi bonds

#2580313

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Question :

The correct order towards bond length is

C - C < C = C < C $\equiv$ C
C $\equiv$ C < C = C < C - C
C = C < C $\equiv$ C < C - C
C = C < C - C < C $\equiv$ C

10)

#2580342

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Question :

Which one of the following has the minimum boiling point ?

1-Butene
1-Butyne
n- Butane
Isobutane

11)

#2580351

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Question :

Which of the following will be the final product when C₂H₂ reacts with HCl

None of these

12)

#2580356

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Question :

Which of these will not react with acetylene?

NaOH
Ammonical AgNO₃
Na
HCl

13)

#2580383

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Question :

Which of the following reaction is shown by alkynes ?

Addition
Substitution
Polymerization
All of these

14)

#2580394

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Question :

HBr, Br₂, CH₃COCH_3, CH₃CHO
Br₂, HBr, CH₃COCH₃, CH₃CHO
HBr, HBr, C_H3COCH_3, CH₃CHO
Br₂, HBr, CH₃CH₂CHO, CH₃CHO

15)

#2580403

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Question :

Which of the following catalyst is used for the following conversion ?

Platinized Asbestos
Red hot iron tube
Platinized Nickel
Iron-molybdenum

16)

#2580419

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Question :

The benzene molecule contains

6 sp²hybrid carbons
3 sp² hybrid carbons
6 sp³ hybrid carbons
3 sp³ hybrid carbons

17)

#2580421

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Question :

Aromatic compounds burn with sooty flame because

they have a ring structure of carbon atoms
they have a relatively high percentage of hydrogen
they have a relatively high percentage of carbon
they resist reaction with oxygen of air

18)

#2580436

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Question :

The product A is

Benzene
Benzaldehyde
Toluene
Benzoic acid

19)

#2580453

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Question :

Catalytic hydrogenation of benzene gives

xylene
cyclohexane
benzoic acid
toluene

20)

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Question :

Benzene can be obtained in the reaction

Ethene + 1, 3-butadiene
Trimerisation of ethyne
Reduction of PhCHO
All of these

21)

#2580498

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Question :

Benzene on reaction with ozone forms __________.

2 molecules of aldehyde and 1 molecule of ketone
2 molecules of ketone and 1 molecule of aldehyde
triozonide
hexaozonide

22)

#2580503

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Question :

AlCl₃acts as ________ in Friedel-Crafts reaction

nucleophile
electrophile
free radical
intermediate

23)

#2580509

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Question :

The electrophilic substitutions reactions of benzene takes place via
(i) generation of electrophile
(ii) generation of nucleophile
(iii) formation of carbocation intermediate
(iv) removal of proton from the carbocation intermediate

(i), (iii) and (iv)
(ii), (iii) and (iv)
(i) and (iv)
(ii) and (iv)

24)

#2580513

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Question :

During the nitration of benzene. In the process of generation of nitronium ion sulphuric acid behaves as a/an ______ and nitric acid behave as a/an _________.

base, acid
acid, base
strong acid, weak acid
weak acid, strong acid

25)

#2580516

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Question :

Benzene is highly unsaturated but it does not undergo addition reaction because

$π$ -electrons of benzene are delocalised.
cyclic structures do not show addition reaction
benzene is a non-reactive compound
All of the above

26)

#2580523

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Question :

Which of the following statements are correct regarding structure of methane ?
(i) Methane has tetrahedral structure.
(ii) The bond angle between all H – C – H bonds is 109.5°.
(iii) The carbon atom is sp2 hybridized.
(iv) C – C and C – H bond lengths are 154 pm and 112 pm respectively.

(i), (ii) and (iii)
(i), (iii) and (iv)
(i), (ii) and (iv)
(i), (ii), (iii) and (iv)

27)

#2580533

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Question :

Which of the following statements are correct ?
(i) The rate of reactivity of alkanes with halogens is F2 > Cl2 > Br2 > I2.
(ii) Rate of replacement of hydrogens of alkanes is 3° > 2º > 1°
(iii) Fluorination of alkanes is a very slow process.
(iv) Iodination of alkanes is too violent to be controlled.

(i), (ii) and (iii)
(i) and (ii)
(ii) and (iii)
(i) and (iv)

28)

#2580542

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Question :

Which of the following statements are correct ?
(i) The general formula of alkenes is CnH2n.
(ii) Alkenes are also known as paraffins.
(iii) Bond length of C–C double bond in alkene is shorter than C–C single bond in alkane.
(iv) Carbon–Carbon double bond in alkene consists of two sigma bonds.
(v) Alkenes are easily attacked by electrophilic reagent.

(i) and (iv)
(i), (iii) and (v)
(i) and (iii)
(i), (ii), (iv) and (v)

29)

#2584127

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Question :

Propene, CH₃CH = CH₂ can be converted into 1-propanol by oxidation. Indicate which set of reagents amongst the following is ideal to effect the above conversion ?

KMnO₄ (alkaline)
Osmium tetraoxide (OsO₄/CH₂Cl₂)
B₆H₆ and alk. H₂O₂
O₃/Zn

30)

#2584163

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Question :

Which of the following shows structure of allylic alcohol?
(i) CH₂ =CH- CH₂OH
(ii) CH₂ =CH- OH
(iii) CH₂=CH- CH(CH₃ )OH
(iv) CH₂ =CH- C (CH₃)₂ OH

(i), (iii) and (iv)
(i), (ii) and (iv)
(ii), (iii) and (iv)
(i), (ii), (iii) and (iv)

31)

#2584167

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Question :

Mechanism of acid catalysed hydration reaction involves
(i) Protonation of alkene to form carbocation by electrophilic attack of H₃O⁺
(ii) Nucleophilic attack of water on carbocation.
(iii) Deprotonation to form alcohol.

(i) and (ii)
(i) and (iii)
(i), (ii) and (iii)
(ii) and (iii)

32)

#2584175

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Question :

ClCH₂CH₂OH is stronger acid than CH₃CH₂OH because of:

– I effect of Cl increases negative charge on O atom of alcohol
– I effect of Cl disperses negative charge on O atom to produce more stable cation
– I effect of Cl disperses negative charge on O atom to produce more stable anion
None of these

33)

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Question :

The reagent used for dehydration of an alcohol is

phosphorus pentachloride
calcium chloride
aluminium oxide
sodium chloride

34)

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Question :

In the following sequence of reactions.

$C H_{3} C H_{2} O H \overset{P + I_{2}}{\to} A \to_{e t h e r}^{M g} B \overset{H C H O}{\to} C \overset{H_{2} O}{\to} D$ the compound D is

propanal
butanal
n-butyl alcohol
n-propyl alcohol

35)

#2584203

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Question :

Which one of the following will show the highest pH value ?

m–nitrophenol.
p–nitrophenol.
o–nitrophenol
Both (b) and (c).

Section 2 (Part-B) 15X4=60

36)

#150893

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Question :

Correct statement about 1,3-dibutene

Conjugated double bonds are present
Reacts with HBr
Forms polymer
All of the above

37)

#150916

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Question :

Ethylene reacts with 1% alkaline KMnO₄ to form

Oxalic acid
Ethylene glycol
Ethyl alcohol
HCHO

38)

#150940

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Question :

Following compound is treated with NBS Compound formed A is

39)

#150983

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Question :

A gas formed by the action of alcoholic KOH on ethyl iodide, decolourises alkaline KMnO₄. The gas is

C₂H₆
CH₄
C₂H₂
C₂H₄

40)

#151019

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Question :

Addition of HBr to propylene in presence of benzoyl peroxide, follows

Markownioff’s rule
Baeyer’s rule
Carbanion mechanism
𝑎𝑛𝑡𝑖-Markownioff’s rule

41)

#151213

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Question :

Cyclohexene on reaction with OsO₄ followed by reaction with NaHSO₃ gives

𝑐𝑖𝑠 − diol
𝑡𝑟𝑎𝑛𝑠 − diol
Epoxy
Alcohol

42)

#151384

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Question :

The final product in following sequence of reaction is

$CH \equiv CH\xrightarrow{{NaN{H_2}}}A\xrightarrow{{C{H_3}Br}}B,$

$C{H_2} = CH - CH = C{H_2}$
$HC \equiv C - C{H_3}$
$C{H_2} = CH - C{H_3}$
$C{H_3} - C{H_2} - C{H_3}$

43)

#166120

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Question :

The major product in the following reaction:

$R - C \equiv C - {R^|} + {H_2}\xrightarrow{{Na/liqN{H_3}}}?$

44)

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Question :

The major product in the following reaction is:

45)

#168190

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Question :

In the above reaction x is

HNO₃
O₂
O₃
KMnO₄

46)

#2583939

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Question :

Tonics in general contain

Ether
Methanol
Ethanol
Rectified spirit

47)

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Question :

Widespread deaths due to liquor poisoning occurs due to

presence of carbonic acid in liquor
presence of ethyl alcohol in liquor
presence of methyl alcohol in liquor
presence of lead compounds in liquor

48)

#2583947

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Question :

Denaturation of alcohol is the

mixing of CuSO₄ (a foul smelling solid) and pyridine (to give the colour) to make the commercial alcohol unfit for drinking
mixing of CuSO₄ (to give the colour) and pyridine (a foul smelling solid) to make the commercial alcohol unfit for drinking
mixing of Cu(OAc)₂and ammonia to make the commercial alcohol unfit for drinking
mixing of Cu(OAc)₂ and pyridine to make the commercial alcohol unfit for drinking

49)

#2583968

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Question :

Ethanol and dimethyl ether form a pair of functional isomers. The boiling point of ethanol is higher than that of dimethyl ether, due to the presence of

H-bonding in ethanol
H-bonding in dimethyl ether
CH₃ group in ethanol
CH₃ group in dimethyl ether

50)

#2583977

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Question :

An ether is more volatile than an alcohol having the same molecular formula. This is due to

dipolar character of ethers
alcohols having resonance structures
inter-molecular hydrogen bonding in ethers
inter-molecular hydrogen bonding in alcohols

QPID #4796 (SET 1)