Clinic Class Test 1 M E

CODE

0

TEST - 10 COURSE NAME : VIKAAS (JA) & VIPUL (JB)

COURSE CODE : CLINIC CLASSES

TARGET : JEE (IITs) 2014 Date : 07-03-2013

Duration : 1 Hour

Max. Marks : 80

Please read the instructions carefully. You are allotted 5 minutes specifically for this purpose.

CHEMISTRY (GOC : BONDING IN ORGANIC MOLECULES AND RESONANCE)

INSTRUCTIONS 2.

No additional sheets will be provided for rough work.

3.

Blank paper, clipboard, log tables, slide rules, calculators, cellular phones, pagers and electronic gadgets in any form are not allowed.

4.

The answer sheet, a machine-gradable Objective Response Sheet (ORS), is provided separately.

5.

Do not Tamper / mutilate the ORS or this booklet.

6.

Do not break the seals of the question-paper booklet before instructed to do so by the invigilators.

7.

Write your Name, Roll No. and Sign in the space provide on the back page of this booklet.

B. Filling the bottom-half of the ORS : Use only Black ball point pen only for filling the ORS. Do not use Gel / Ink / Felt pen as it might smudge the ORS. 8.

Write your Roll no. in the boxes given at the top left corner of your ORS with black ball point pen. Also, darken the corresponding bubbles with Black ball point pen only. Also fill your roll no on the back side of your ORS in the space provided (if the ORS is both side printed).

9.

Fill your Paper Code as mentioned on the Test Paper and darken the corresponding bubble with Black ball point pen.

10. If student does not fill his/her roll no. and paper code correctly and properly, then his/her marks will not be displayed and 5 marks will be deducted (paper wise) from the total. 11. Since it is not possible to erase and correct pen filled bubble, you are advised to be extremely careful while darken the bubble corresponding to your answer. 12. Neither try to erase / rub / scratch the option nor make the Cross (X) mark on the option once filled. Do not scribble, smudge, cut, tear, or wrinkle the ORS. Do not put any stray marks or whitener anywhere on the ORS. 13. If there is any discrepancy between the written data and the bubbled data in your ORS, the bubbled data will be taken as final. C. Question paper format and Marking scheme : 14. The question paper consists of 1 parts. The part consists of Two Sections. 15. For each question in Section–I, you will be awarded 3 marks if you darken the bubble(s) corresponding to the correct choice for the answer and zero mark if no bubbled is darkened. In case of bubbling of incorrect answer, minus one (–1) mark will be awarded. 16. For each question in Section–II, you will be awarded 5 marks if you darken the bubble corresponding to the correct answer and zero marks if no bubble is darkened. In case of bubbling of incorrect answer, minus one (–1) mark will be awarded.

DO NOT BREAK THE SEALS WITHOUT BEING INSTRUCTED TO DO SO BY THE INVIGILATOR

A. General : 1. This Question Paper contains 22 questions.

CHEMISTRY

Atomic masses : [H = 1, D = 2, Li = 7, C = 12, N = 14, O = 16, F = 19, Na = 23, Mg = 24, Al = 27, Si = 28, P = 31, S = 32, Cl = 35.5, K = 39, Ca = 40, Cr = 52, Mn = 55, Fe = 56, Cu = 63.5, Zn = 65, As = 75, Br = 80, Ag = 108, I = 127, Ba = 137, Hg = 200, Pb = 207]

SECTION - I

Straight Objective Type This section contains 15 questions. Each question has 4 choices (A), (B), (C) and (D) for its answer, out of which ONLY ONE is correct. 1.

How many lone pairs of electrons are in resonance of given compound.

(A) 4 2.

(B) 2

(C) 3

(D) 6

Compare bond length x and y of following given compound

(A) x = y

(B) x > y

(C) x < y

(D) x >> y

3.

In which compound oxygen atom take part in conjugation of phenol (Ph–OH) and Benzyl alcohol (PhCH2OH)? (A) PhOH (B) PhCH2OH (C) both (D) none of these

4.

The correct stability order of the following resonance structures is :

(A) (IV) > (I) > (III) > (II) (C) (III) > (II) > (IV) > (I)

(B) (II) > (IV) > (I) > (III) (D) (I) > (IV) > (III) > (II)

Space for Rough Work

RESONANCE

JA&JBTEST10070313C0-1

CHEMISTRY

5.

In which of the compound cross conjugation are present

(A) x, y 6.

7.

(B) y, z, w

(C) x, y, z, w

(D) only z

Which of the following compounds have delocalized electrons ? O || (A) CH2  CHCH2CCH3

(B)

(C)

(D) CH3CH2CH2 O CH = CHCH3

How many of these compounds not have conjugated system (i)

(ii) CH3CH2NHCH2CH = CHCH3

(v) CH2=CHCH2CH = CH2 (A) 4

(iii)

(vi) (B) 3

(iv)

(vii) (C) 6

(D) 5

Space for Rough Work

RESONANCE

JA&JBTEST10070313C0-2

CHEMISTRY

8.

Select incorrect statement about inductive effect? (A) Inductive effect does not involve -electrons. (B) Inductive effect is the polarisation of  bond electrons. (C) Inductive effect creates net charge in the molecule. (D) Inductive effect is distance dependent effect.

9.

Maximum –I effect is exerted by the group (A) C6H5 (B) –OCH3

10.

11.

How many  and  bonds are in the given compound. HC  C — CH = CH2 (A) 3 and 6 bonds (B) 3 and 7 bonds (C) 2 and 7 bonds

(D) –CHO

(D) 4 and 8 bonds

The number of sp2 – sp2  bond in given compound

(A) 4

12.

(C) –Cl

(B) 5

The hybridisation of nitrogen in

(A) sp3

(B) sp2

(C) 3

(D) 6

(pyrrole) is :

(C) sp

(D) Cann't be predicted

Space for Rough Work

RESONANCE

JA&JBTEST10070313C0-3

CHEMISTRY

13.

Resonance is not possible in :

(A) 14.

(B)

(D)

(C) = 

(D) can not say

Stability order of the following species ?

(A) >  15.

(C) CH2 = CH — Cl

(B) > 

Which of them are correct for stability of resonating structure ?

(A)

>

(C)

(B)

=

(D)

>

=

Space for Rough Work

RESONANCE

JA&JBTEST10070313C0-4

CHEMISTRY

SECTION - II

Multiple Correct Answer Type This section contains 7 questions. Each question has 4 choices (A), (B), (C) and (D) for its answer, out of which ONE OR MORE is/are correct. 16.

17.

In which of the following II is more stable than I :

(A)

(B)

(C)

(D)

The most unlikely representation(s) of resonance structures of fluorobenzene is :

(A)

(B)

(C)

(D)

Space for Rough Work

RESONANCE

JA&JBTEST10070313C0-5

CHEMISTRY

18.

In which of the following species, correct direction of Inductive effect are shown ? (A)

19.

(B)

(C)

(D)

In which compound IInd resonating structure is less stable then I st.

(X)

(Y)

(Z) (A) X = 1 > 2

(B) Y = 1 > 2

(C) Z = 1 > 2

(D) All of these

Space for Rough Work

RESONANCE

JA&JBTEST10070313C0-6

CHEMISTRY

20.

21.

The compounds which are resonance stabilised are (A) CH2=CH–Cl

(B)

(C) CH2 = CH – CH2 – Cl

(D)

Which of the given pairs are resonating structures? 

(A)

&

(B) CH2 = CH – O– & CH2 – CH  O 



(C) CH2 = CH – O – CH3 & CH2 – CH  O – CH3 22.





(D) CH3 – C  O & CH3 – C  O

In which delocalisation of positive charge is NOT possible ?

(A)

(B)

N 

O

OH 2

H

H

NH 3

–

 (C)

(D)

Space for Rough Work

RESONANCE

JA&JBTEST10070313C0-7