TEST /12Th & 12Th Passed/JEE-MAIN(7)

Test/12th & 12th Passed/JEEMAIN(7)/Set-2 Mittal Sir

III-A/172 , Nehru Nagar Ghaziabad. Ph : 9811212090, 9868502091.

email : , website : www.bmcchemistry.com

TEST /12th & 12th Passed/JEE-MAIN(7)

Date : 01 Feb 2014

Max Marks : 120 Time : 50 minutes

“All the best”

(Total Marks : 120)

Single Correct Answer Type(+4/-1)

This section contains 30 multiple choice questions. Each question has 4 choices (a), (b), (c) and (d) for its answer, out of which ONLY ONE is correct.

1. Tanning of leather is based on

(a) Redox reaction (b) Precipitation by mixing two oppositely charged sol

2. For a first order reaction at 300 K activation energy is 19.15 kJ. When catalyst was used rate of reaction become 10 times. In absence of catalyst the rate constant of reaction at 300 K was 1 ´ 10–4 sec–1. The correct statement (s) is (are) for this reaction.

(I) In presence of catalyst the value of rate constant is 1 ´ 10–3 sec–1

(II) Catalyst has decreased activation energy to approx 13.4 kJ

(III) At approx 210 K & in presence of catalyst the rate of reaction would be same to rate of reaction at

300 K carried out in absence of catalyst

(a) I only (b) II only (c) I & II both (d) I, II & III all.

3. CH3 – CH – CH3 A (Product having maximum yield) Monosubstitution product (A) will

CH3 give mainly –

(a) SN2 reaction (b) SN1 reaction

4. For the Galvanic cell

2 A + 2H+ ® H2 + 2A+

The equilibrium constant at 298 K is 1020

The emf of electrode at 298 K 0.1 M A+/A is approximately

(a) 0 (b) 0.65 V (c) 0.53 V (d) – 0.5 V

5. The reactivity of the following compounds towards alkaline hydrolysis follow the order

Cl CH2Cl COCl

, ,

NO2 NO2

I II III

(a) I < II < III (b) III < II < I (c) III < I < II (d) I < III < II

6. Which has lowest energy

OCH3 CH3 CH3 OCH3

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

H Cl H Cl H Cl H Cl

Space for rough work

7. Which of the following is a chiral compound

H H H

H H Cl CH3 H CH3

(a) (b) (c) (d) All of these

CH3 Cl CH3 Cl CH3 Cl

H H H

8. O The given compound is

(a) S (b) R

H Cl

9. For the reaction

2 A + B ® C

The following mechanism has been proposed

A + A ® A2

A2 + B C

On doubling concentration of ‘A’ the rate of reaction will

(a) become four times (b) become two times

10. Which of the following disproportionate in acidic medium

(a) MnO4–2 (b) MnO4– (c) CrO4–2 (d) both MnO4–2 & CrO4–2

11. The incorrect bond angle is –

(a) F2O < Cl2O < Br2O (b) H2O < Cl2O < ClO2

12. Three electrolytic cells A, B & C were connected in series, these contain AgNO3, ZnSO4 & AlCl3 respectively. After electrolysis in total three mols of metal were obtain. Mass of silver deposited is –

(Ag = 108, Zn = 65.5, Al = 27)

(a) Aprox 45 gm (b) Aprox 90 gm (c) Aprox 180 gm (d) Aprox 360 gm

13. Total number of 90° F – Br – F bond angles in BrF3

(a) 3 (b) 4 (c) 5 (d) zero

14. COOH

Br For the given structure the correct statement (s) is/are

(I) The structure has plane of symmetry

H H (II) C – 2 is ‘R’ , C – 3 is ‘S’

(III) C –2 is ‘S’ , C – 3 is ‘R’

OH (IV) Both C – 2 & C – 3 are ‘R’

COOH

(a) I & II (b) II only (c) III only (d) IV only

15. Which of the following does not behave as pseudohalide

(a) CNO– (b) OCN– (c) [Co(CO)4]– (d) RCOO–

Space for rough work

16. A radiactive element has t = 1012 sec what mass of element is required to get an activity of 0.693 millicurie if atomic mass of element is 100.

(a) 1000 gm (b) 3.7 ´ 10–10 gm (c) 6.16 ´ 10–3 gm (d) 1 gm

17. XeF4 & XeF6 are expected to be

(a) Reducing (b) unreactive (c) Strongly basic (d) oxidizing

18. COOH COOH

OH H

H OH OH H

H OH

COOH COOH

(A) (B)

The structures ‘A’ & ‘B’ are

(a) Enantiomers of each other (b) Diasteriomers of each other

19. Among the following the true sentence (s) is/are

(i) HF is a weak acid

(ii) Iodine reacts with hot and concentrated NaOH solution to produce NaI and NaOI

(iii) Solubility of I2 in water can be increased by adding KI

(iv) When an aqueous solution of sodium flouride is electrolysed, the gas liberated at anode is O2

(a) (i), (iii) & (iv) (b) (i), (ii) & (iii) (c) (i) & (iv) (d) (i) only

20. ONa

X Y

COOH

A B

The correct statement (s) is/are

(I) X & A are isomers (II) Y & B are isomers

(III) Y & B are same compounds (IV) X & A are same compounds

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

21. Bleaching powder contains a salt of an oxoacid as one of its components. The anhydride of that oxoacid is –

(a) Cl2O7 (b) Cl2O (c) ClO2 (d) Cl2O6

22. There are four reactions

(i) A ® B EA = 25 kJ/mol

(ii) K ® L EA = 60 kJ/mol

(iii) M ® N EA = 10 kJ/mol

(iv) X ® Y EA = 100 kJ/mol

The reaction (s) in which an increase in temperature from 300 K to 310 K will increase the rate of reaction ³ 100 %

(a) (ii) & (iv) (b) (i), (ii) & (iii) (c) (i) & (iii) (d) only (iv)

23. Which of the following is most acidic

(a) HOCl (b) HClO3 (c) HClO4 (d) H2SO4

24. OH OH OH

SO3H

, ,

SO3H

Br2(aq) Br2(aq) Br2(aq)

(I) (II) (III)

The correct statement is –

(a) (i) & (ii) are same compounds (b) (i) & (iii) are same compounds

25. The structure (s) which do not give SN1 reaction

Cl O

C – CH – CH3 CH3 – CH – O – CH3

Cl Cl

(I) (II) (III)

(a) I & II (b) II & III (c) I & III (d) I, II & III all

26. Among XeF2, XeF4 & XeF6 the compound (s) which give ‘Xe’ on hydrolysis

(a) XeF2 & XeF4 (b) XeF2 & XeF6 (c) XeF4 & XeF6 (d) XeF2 only

27. Electrolyte Coagulating value Coagulating value

for positively for negatively

charged sol charged sol

Al2(SO4)3 0.4 0.3

K4[Fe(CN)6] 0.3 0.4

NaCl 1.0 1.0

A colloidal solution was prepared on adding AgNO3 in KI solution. To precipitate one lit of this

colloidal solution which electrolyte will require in greater amount (mass in gm)

(a) K4[Fe(CN)6] (M. wt = 368) (b) Al2(SO4)3 (M. wt = 342)

28. When AgNO3 is electrolysed using silver electrode the reaction which occur on anode is –

(a) 4 OH– ® 2 H2O + O2 + 4 e– (b) NO3– + 2H+ + e– ® NO2 + H2O

29. among the reaction (s) in which I2 is not formed as product is/are

(i) Sodium iodate is treated with sodium bisulphite

(ii) Potassium iodide is treated with alkaline potassium per magnate solution

(iii) Chlorine is passed in aqueous solution of sodium iodide

(iv) Bromine is passed in aqueous solution of sodium iodide

(v) Concentrated H2SO4 is added in sodium iodide

(a) (ii) only (b) (i) & (iii) (c) (ii) & (iv) (d) (ii), (iv) & (v)

30. Which of the following is most stable to heat

(a) HBr (b) HI (c) HCl (d) HOCl

Space for rough work

III-A/172 , Nehru Nagar Ghaziabad. Ph : 9811212090, 9868502091.

email : , website : www.bmcchemistry.com

TEST /12th & 12th Passed/JEE-MAIN(7)

Date : 01 Feb 2014

Max Marks : 120 Time : 50 minutes

Note : Write your name and roll no. above in box before filling the answers.

(Straight objective type) (+4/-1)

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