General Concepts - Organic Chemistry - Chemistry Previous Year Questions

1

2008 · Chemistry · Organic Chemistry · General Concepts

Chemistry (CY) 2008

The compound that is NOT aromatic is

A

B

C

D

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2

2008 · Chemistry · Organic Chemistry · General Concepts

Chemistry (CY) 2008

The order of stability for the following cyclic olefins is

A

I < II < III < IV

B

II < III < IV < I

C

II < III < I < IV

D

IV < II < I < III

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3

2008 · Chemistry · Organic Chemistry · General Concepts

Chemistry (CY) 2008

The most acidic species is

A

B

C

D

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4

2008 · Chemistry · Organic Chemistry · General Concepts

Chemistry (CY) 2008

The Hammett reaction constant ρ is based on

A

the rates of alkaline hydrolysis of substituted ethyl benzoates

B

the dissociation constants of substituted acetic acids

C

the dissociation constants of substituted benzoic acids

D

the dissociation constants of substituted phenols

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5

2011 · Chemistry · Organic Chemistry · General Concepts

Chemistry (CY) 2011

Choose the word from the options given below that is most nearly opposite in meaning to the given word: Frequency

A

periodicity

B

rarity

C

gradualness

D

persistency

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6

2011 · Chemistry · Organic Chemistry · General Concepts

Chemistry (CY) 2011

Choose the most appropriate word from the options given below to complete the following sentence: It was her view that the country's problems had been ______________ by foreign technocrats, so that to invite them to come back would be counter-productive.

A

identified

B

ascertained

C

exacerbated

D

analysed

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7

2012 · Chemistry · Organic Chemistry · General Concepts

Chemistry (CY) 2012

In the proton decoupled ¹³C NMR spectrum of 7-norbornanone, the number of signals obtained is

A

7

B

3

C

4

D

5

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8

2012 · Chemistry · Organic Chemistry · General Concepts

Chemistry (CY) 2012

One of the parts (A, B, C, D) in the sentence given below contains an ERROR. Which one of the following is INCORRECT?

I requested that he should be given the driving test today instead of tomorrow.

A

requested that

B

should be given

C

the driving test

D

instead of tomorrow

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9

2012 · Chemistry · Organic Chemistry · General Concepts

Chemistry (CY) 2012

Which one of the following options is the closest in meaning to the word given below?

Latitude

A

Eligibility

B

Freedom

C

Coercion

D

Meticulousness

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10

2012 · Chemistry · Organic Chemistry · General Concepts

Chemistry (CY) 2012

Choose the most appropriate word from the options given below to complete the following sentence:

Given the seriousness of the situation that he had to face, his ___ was impressive.

A

beggary

B

nomenclature

C

jealousy

D

nonchalance

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11

2012 · Chemistry · Organic Chemistry · General Concepts

Chemistry (CY) 2012

Choose the most appropriate alternative from the options given below to complete the following sentence:

If the tired soldier wanted to lie down, he ___ the mattress out on the balcony.

A

should take

B

shall take

C

should have taken

D

will have taken

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12

2012 · Chemistry · Organic Chemistry · General Concepts

Chemistry (CY) 2012

One of the legacies of the Roman legions was discipline. In the legions, military law prevailed and discipline was brutal. Discipline on the battlefield kept units obedient, intact and fighting, even when the odds and conditions were against them.

Which one of the following statements best sums up the meaning of the above passage?

A

Thorough regimentation was the main reason for the efficiency of the Roman legions even in adverse circumstances.

B

The legions were treated inhumanly as if the men were animals.

C

Discipline was the armies’ inheritance from their seniors.

D

The harsh discipline to which the legions were subjected to led to the odds and conditions being against them.

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13

2013 · Chemistry · Organic Chemistry · General Concepts

Chemistry (CY) 2013

The Headmaster __________ to speak to you.
Which of the following options is incorrect to complete the above sentence?

A

is wanting

B

wants

C

want

D

was wanting

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14

2013 · Chemistry · Organic Chemistry · General Concepts

Chemistry (CY) 2013

Mahatma Gandhi was known for his humility as

A

he played an important role in humiliating exit of British from India.

B

he worked for humanitarian causes.

C

he displayed modesty in his interactions.

D

he was a fine human being.

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15

2013 · Chemistry · Organic Chemistry · General Concepts

Chemistry (CY) 2013

All engineering students should learn mechanics, mathematics and how to do computation.
I                                                                       II                                                                       III                                                                   IV
Which of the above underlined parts of the sentence is not appropriate?

A

I

B

II

C

III

D

IV

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16

2013 · Chemistry · Organic Chemistry · General Concepts

Chemistry (CY) 2013

All professors are researchers
Some scientists are professors

Which of the given conclusions is logically valid and is inferred from the above arguments:

A

All scientists are researchers

B

All professors are scientists

C

Some researchers are scientists

D

No conclusion follows

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17

2007 · Chemistry · Organic Chemistry · General Concepts

Chemistry (CY) 2007

Classify the following species as electrophiles (E) and nucleophiles (N) in routine organic synthesis \[ \text{SO}_3 \quad \text{Cl}^- \quad \text{CH}_3\text{NH}_2 \quad \text{H}_3\text{O}^+ \quad \text{BH}_3 \quad \text{CN}^- \]

A

E = SO₃, Cl^-, BH₃ ; N = CH₃NH₂, H₃O⁺, CN^-

B

E = Cl^-, H₃O⁺ ; N = SO₃, CH₃NH₂, BH₃, CN^-

C

E = Cl^-, H₃O⁺, BH₃ ; N = SO₃, CH₃NH₂, H₃O⁺, CN^-

D

E = SO₃, Cl^-, H₃O⁺, BH₃ ; N = CH₃NH₂, CN^-

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18

2007 · Chemistry · Organic Chemistry · General Concepts

Chemistry (CY) 2007

The increasing order of basicity among the following is

A

Y < X < Z

B

Y < Z < X

C

X < Z < Y

D

X < Y < Z

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19

2007 · Chemistry · Organic Chemistry · General Concepts

Chemistry (CY) 2007

Match the structures in List I with the coupling constant [¹H J (Hz)] given in List II

A

i, b-ii, c-iii

B

ii, b-iii, c-i

C

iii, b-ii, c-i

D

iii, b-i, c-ii

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20

2010 · Chemistry · Organic Chemistry · General Concepts

Chemistry (CY) 2010

The decreasing order of acidity of the marked H of the following molecules is

A

I > II > III

B

III > I > II

C

III > II > I

D

II > I > III

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