test-3 organic chemistry,solid states, kmno4, k2cr2o7 (set-q) · 2017. 10. 14. · microsoft word -...

Test-3/12th & Droppers/Set-Q Mittal Sir

BMC CLASSES Page No - 1 III-A/172, Nehru Nagar Ghaziabad. Ph : 0120-4102287, 9811212090 email: [email protected] web:www.bmcchemistry.com

III-A/172 , Nehru Nagar Ghaziabad. Ph : 9811212090, 9868502091. email : [email protected], website : www.bmcchemistry.com

Type : JEE MAIN 2017-18

TEST-3/Class 12th & 12TH Passed Set-Q

Syllabus : ORGANIC CHEMISTRY, SOLID STATES , KMnO4, K2Cr2O7

Date : 13th OCT 2017

Max Marks : 120 Time : 45 Minutes

Section - I

Single Correct Answer Type (+4/-1) Each question has 4 choices (a), (b), (c) and (d) for its answer, out of which ONLY ONE is correct.

1. Which has lowest pKa. COOH COOH COOH OH (a) (b) (c) (d)

Cl OCH3 NO2

2. 500 ml of an aqueous solution of KI required 250 ml of 0.2 M solution of KMnO4 in acidic medium. Volume of 0.2 M KMnO4 in mild basic medium required to oxidise 250 ml of same KI solution is –

(a) 125 ml (b) ml (c) ml (d) 1250 ml

CODE

Q

INSTRUCTIONS

General Instructions

1. Ensure matching of OMR sheet code with the Question paper Code before you start marking your answers on OMR sheet

2. On the answer sheet, darken the appropriate bubble with Blue/Black Pen only. Use of pencil and any other ink strictly prohibited.

3. Any kind of cutting, rubbing or use of whitener not allowed on answer sheet.

Roll No.

Name of the student



3. NH2

(P) (Q)

The product ‘Q’ is (a) NH2 (b) NH2 Br Br Br Br SO3H SO3H Br

(c) NH2 (d) NH2 Br Br HSO3 SO3H Br Br

4. C ≡ CH HO C –– CH2 –– COOH ‘Q’

COOH Product ‘Q’ is

(a) C ≡ CNa (b) C ≡ CH

HO C –– CH2 –– COONa HO C –– CH2COONa

COOH COONa

(c) C ≡ CH (d) C ≡ CH

NaO C –– CH2COOH NaO C –– CH2 COONa

COONa COOH

5. If Cu copper crystallises in three type of cubic lattices A Simple cubic B F.C.C C B.C.C In which case the length of body diagonal would be maximum. (a) A (b) B (c) C (d) A = B = C



6. The reactivity of compound Z with different halogens under appropriate conditions are given below: OH Monohalo substitution derivative when X2 I2 x2 Dihalo substitution derivative when X2 Br2 z C(CH3)3 Trihalo substitution derivative when X2 Cl2 The observed pattern of electrophilic substitution can be explained by : (I) the steric effect of the halogen (II) the steric effect of tert-butyl group (III) the electronic effect of the phenolic group (IV) the electronic effect of the tert-butyl group correct statements – (a) I & IV only (b) II & III only (c) I, II & III (d) all I,II,III & IV

7. Which is most stable – H (a) (b) Br (c) (d) all are equally stable Br Br N H N N H

H H

8. To convert Benzene into m – Nitro benzoic acid the first step should be – (a) Nitration of benzene (b) friedal craft reaction (c) any of (a) & (b) both methods are equivalent (d) Neither (a) nor (b)

9. Which is most basic (a) CH3CH2 (b) CH ≡ C (c) CH3NH (d) CH3COO

10. I.U.P.A.C Name of the compound CN is –

COOH

Br (a) 2 – Bromo – 5 – Cyano benzoic acid (b) 6 – Bromo – 3 – Cyano benzoic acid (c) 4 – Bromo – 3 – Carboxy benzonitrile (d) 2 – Carboxy – 4 – Cyano – 1 – bromo benzene 11. In a cubic solid atom ‘P’ are at corner and atom ‘Q’ are at face center. The edge length of cube is 300 Pm. The density of solid is –

Atomic masses :- P = 40 gm/mol Q = 20 gm/mol (a) 6.1 gm/cm3 (b) 5.1 gm/cm3 (c) 24.4 gm/cm3 (d) 7.1 gm/cm3



12. The major product of the following reaction is OH

NH2 – +

OH ONa (a) (b) Cl N2Cl

OH N = N (c) (d) OH

N = N

13. In mild basic medium KMnO4 oxidise Mn+2 salt into MnO2. If 1 mol of KMnO4 was taken in this experiment with sufficient mols of Mn+2 salt. Then number of mols of MnO2 formed as product would be equal to –

(a) 2 (b) 2.5 (c) 5 (d) 3

14. Correct stability order for the following species is : O O (I) (II) (III) (IV)

(a) II > IV > I > III (b) I > II > III > IV (c) II > I > IV > III (d) I > III > II > IV

15. In the following carbocation, H/CH3 that is most likely to migrate to the positively charged carbon is:

H H 1

H3C –– 2C –– 3C –– 4C –– CH3

HO H CH3

(a) CH3 at C – 4 (b) H at C – 4 (c) CH3 at C – 2 (d) H at C – 2

16. The order of basicity among the following compounds is NH NH2

H3C NH2 N NH HN N H2N NH

I II III IV

(a) II > I > IV > III (b) IV > II > III > I (c) IV > I > II > III (d) I > IV > III > II


BMC CLASSES Page No - 5 III-A/172, Nehru Nagar Ghaziabad. Ph : 0120-4102287, 9811212090 email: [email protected] web: www.bmcchemistry.com

17. OCH3 (P) (Q)

CH2 – CH = CH2 the compound ‘Q’ is – OCH3 (a) (b) OCH3 (c) OCH3 (d)

18. Consider thiol anion (RS–) and alkoxy anion (RO–). Which of the following statements

is correct? (a) RS– is more basic but less nuclephilic than RO– (b) RS– is less basic and less nuclephilic than RO– (c) RS– is less basic but more nuclephilic than RO– (d) RS– is more basic and more nucleophilic than RO–

19. Which of the following is the most stable carbanion? (a) O2N CH2 (b) CH2

(c) CH3 CH2 (d) CH3O CH2

20. The non-aromatic compound among the following is:

(a) (b) (c) (d) S

21. How many mono chloro substituted products are available from diphenylmethane CH2 (a) 3 (b) 4

(c) 5 (d) 6

CH3 CH3 O

22. The analgesic ibuprofen CH3 –– CH –– CH2 CH –– C –– OH shows :

(a) geometrical isomerism (b) optical isomerism (c) tautomerism (d) none of these

O 23.

‘P’ Cl Total number of C –– H sigma bonds in product ‘P’ are – (a) 8 (b) 10 (c) 12 (d) 14

24. To convent 2 – Methyl – 2 – butanol into 3 – Methyl- 2- butanol , which reagent would be required for hydration of alkene –

(a) dil H2SO4 (b) Hg (OCOCH3)3, OH– ; NaBH4 (c) BH3 in THF ; H2O2/OH– (d) H2O/ Organic peroxide



25. CH2 = CH – CH = CH – O – CH3 CH2 – CH = CH – CH = O – CH3 (I) (II) CH2 – CH – CH = CH – O – CH3

III The correct stability order of structures I, II & III is (A) I > III > II (b) I > II > III (c) I < II < III (d) II < I < III

SECTION – II Integer Answer Type (+4/-1)

This section contains 5 questions. The answer to each of the questions is a single-digit integer, ranging from 0 to 9. The bubble corresponding to the correct answer is to be darkened in the ORS.

26. A crystalline solid of a pure substance has a face-centered cubic structure with a

cell edge of 400 pm. If the density of the substance in the crystal is 8 g cm–3, then the number of atoms present in 256 g of the crystal is N × 1024. The value of N is

27. Amino acid (monomer of proteins) are ditected by ‘Ninhydrin test’ . Ninhydrin react with amino acid to give violet colour in basic medium. The formula of violet colour which is also called ‘Ruhemann’s purple’ is –

O O N O O How many hydrogen atoms are present in one molecule of ‘Ruhemann’s purple’

28. Among the following total number of compounds in which nitrogen can be estimated using Kjeldahl’s method.

CN NH2 N2+ Cl– CH3NH2, N = N , , , ,

N

CH3 – CH2 – NO2, CH3 – N C, CH3 – N – CH3 CH3

29. A famous pesticide D.D.T, is prepared by the reaction of chloral and chlorobenzene. The I.U.P.A.C name of D.D.T is 1,1,1, – Trichloro 2,2 –bis (P – Chloro phenyl) ethane.

Total number of hydrogen atoms present in one molecule of D.D.T is/are

30. Among the following, the number of aromatic compound(s)



III-A/172 , Nehru Nagar Ghaziabad. Ph : 9811212090, 9868502091. email : [email protected], website : www.bmcchemistry.com

Type : JEE MAIN 2017-18

TEST-3/Class 12th & 12TH Passed Set-Q

Syllabus : ORGANIC CHEMISTRY, SOLID STATES , KMnO4, K2Cr2O7

Date : 13th OCT 2017

Max Marks : 120 Time : 45 Minutes

Note : Write your name and roll no. above in box before filling the answers. Use only blue/black ball pen, use of pencil is strictly prohibited. Section - I Straight Objective Type (+4/-1)

A B C D A B C D A B C D 1 11 21

2 12 22

3 13 23

4 14 24

5 15 25

6 16

7 17

8 18

9 19

10 20 Section - II

Integer type (+4/-1)

0 1 2 3 4 5 6 7 8 9 26

27

28

29

30

Roll No.

Name of the student

CODE

Q

test-3 organic chemistry,solid states, kmno4, k2cr2o7 (set-q) · 2017. 10. 14. · microsoft word -...

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