Ethylene glycol involves larger hydrogen bondings

FIITJEE AIEEE CLASS ROOM PROGRAM

PHASE TEST – II

CHEMISTRY

(a) General

1. This booklet is your Question Paper.

(b) Filling in the OMR

6. On the OMR, write in ink your Name, Enrollment No., name of the centre and put your signature in the appropriate boxes.

Each questions of Section B carries 3 Marks

Each questions of Section C carries 4.5 Marks

SECTION – A

1. Which of the following could act as a propellant for rockets?

(C) Saturation of water with CaCO₃ (D) Saturation of water with MgCO₃

3. Which of the alkali metal chloride is expected to have highest melting point?

(C) absorbs CO₂ (D) produces O₂

5. Which of the following is wrong IUPAC name?

(A)	CH3CH2CH2COOCH2CH3­(Ethyl butanoate)
(B)		(3-methyl butanol)
(C)	(3-methyl butan-2-ol)
(D)	(2-methyl-3-pentan-3-one)

(A) 2-hydroxy propanoic acid (B) 2, 3-dichloropentane

(C) 2, 3-dichloropentane (D) 2-chlorobutane

9. Be and Al exhibit many properties which are similar. But the two elements differ in:

(A) exhibiting amphoteric nature of oxides

(A) Sea-shells (B) Dolomite

(C) A marble statue (D) Calcined gypsum

12. Tautomerism is not exhibited by:

13. p-Cresol reacts with chloroform in alkaline medium to give compound (A) which adds hydrogen cyanide to from compound (B). The latter on acidic hydrolysis gives chiral carboxylic acid. The acid is:

(A)		(B)
(C)		(D)

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

15. The correct order of nucleophilicity among the following is:

(A) -O^- < -OH < -OCOCH₃ (B) -O^- < -OH > -OCOCH₃

(C) -O^- > -OH < -OCOCH₃ (D) -O^- > -OH > -OCOCH₃

19. Given and . Which of the following facts is correct?

(A) pK_a(HCN) = pK_a(CH₃COOH)

20. Among the following structures

(D) Only III is a chiral compound

21. Which of the following statements is not correct?

22. The correct order of base strength of the following amines is

(A) o-nitroaniline > p-nitroaniline > m-nitroaniline

(A) cyclohexene (B) 1-methylcyclopentene

(C) 1, 2 – dimethylcyclobutene (D) 3-hexene

(D) Benzene-water form a higher boiling azeotrope.

Space for Rough Work

(D) Alkynes are less reactive than alkenes towards addition of Br­₂.

26. Which of the following statements regarding alkanes is not correct?

27. Given the following reaction at equilibrium

(D) The dissociation of SO₃.

28. In a system , if the equilibrium conc. of B increases by a factor of 8, it will cause the equilibrium conc. of C to change to

(B) alkaline in nature

(C) neutral in nature

31. Which of the following oxides will be most acidic in nature?

(A) Na₂O (B) MgO

(B) Decreasing order of acidic character of chlorophenols is

p-ClC₆H₄OH > o-ClC₆H₄OH > m-ClC₆H₄OH

33. The IUPAC name if the compound

is

(C) 3,3-dimethyl-1-cyclohexanol

(D) 1,1-dimethyl-3-cyclohexanol

(A) (B) RT

(C) (D) 1.0

(A) 2, 4-hexadiene (B) 1, 3-cyclohexadiene

(C) 1, 4-cyclohexadiene (D) 1-methyl-1,3-cyclopentadiene

(A) (B) P₂O₅

(C) H₃PO₄ (D)

(A) Pd/H₂ (B) Zn/HCl

(C) Sn/HCl (D) Zn-Hg

Ionised in the small intestine and almost unionsied in the stomach.

43. 10 ml of 0.2 M acid is added to 250 ml of a buffer solution with pH = 6.34 and the pH of the solution becomes 6.32. The buffer capacity of the solution is:

a. CH₃COONa 1. Strong electrolyte with pH > 7

b. NH₄Cl 2. Strong electrolyte with the pH < 7

(A) 2 3 1 4

(B) 1 2 4 3

(A) 10^-4 M Ca²⁺ + 10^-4 MF^- (B) 10^-2 M Ca²⁺ + 10^-3 MF^-

(C) 10^-5 M Ca²⁺ + 10^-3 MF^- (D) 10^-3 M Ca²⁺ + 10^-5 MF^-

(A) the solubility of cadmium hydroxide to decrease.

(B) the OH^- concentration to decrease and the Cd²⁺ concentration to increase.

(C) increases with temperature (D) pH + pOH = 14, at all temperatures

49. The equilibrium constant K_C for the reaction SO_2(g) + NO_2(g) SO_3()g) + NO_(g) is 16. If 1 mole each of all four gases is taken in 1 dm³ vessel the equilibrium concentration of NO would be

The K_p for the reaction is 0.11

If the reaction was started with 0.45 moles of CO_­2 and 0.45 moles of H₂ at 700K, the concentration of CO₂ when 0.34 mole of CO₂ and 0.34 mole of H_­2 are added when the first equilibrium is attained, is

(C) 2.55 (D) 5.1

Space for Rough Work

53. A vessel at 1000K contains CO₂ with a pressure of 0.5 atm. Some of the CO₂ is converted into CO on the addition of graphite. The value of K_p if the total pressure at equilibrium is 0.8 atm is:

(A) 1.8 atm (B) 3 atm

(A) There will be a tendency to form more NO and O_­3.

(B) There will be a tendency to form more NO₂ and O₂.

(C) 2.1 × 10^–12 (D) 2.1 × 10^–14

Space for Rough Work

AIEEE − 2007

ANSWERS

SECTION – A

1. A 2 A 3. A 4. A

15. C 16. D 17. C 18. C

19. B 20. C 21. B 22. B

SECTION – C

36. A 37. C 38. D 39. D

SOLUTIONS

1. Liq. H₂ becuase low atomic mass at high enthalpy of combustion and liq. O₂ a strong supporter for combustion.

is meso form.

12. Quinones show highly conjugated system and thus, do not exhibit tautomerism

13.

14. Cyclopropyl methyl carbocations are more stable than benzyl carbocations due to conjugation between bent orbitals of cyclopropyl group.

24. In the presence of HNO₃/H₂SO₄, -N(CH₃)₂ is converted into electron seeking cation which directs the incoming group to meta portion.

26. Order of reactivity is 3^o > 2^o > 1^o

o-ClC₆H₅OH > m- ClC₆H₅OH > m- ClC₆H₅OH

34. The given compounds are,

Hence or,

38. Larger the branching in hydrocarbon chain, lesser the boiling point. Alkene and alkynes have higher boiling points than isobutene.

Buffer capacity =

45. [Ca²⁺][F^-]²

0.1

⇒

47. H⁺ from HCl will neutralize OH^–. To maintain the following equilibrium constant value as constant [Cd²⁺] will increase.

Cd(OH)_2(s) Cd²⁺_(aq.) + 2OH^– _(aq.)

= 0.71 = 1.16

53. CO_2(g) + C_(s) 2CO_(g)

x = 0.3

K_p = $\frac{(p_{\text{CO}})^{2}}{(p_{\text{CO}_{2}})} = \frac{(2 \times 0\text{.}3)^{2}}{(0\text{.}5 - 0\text{.}3)}$ = 1.8 atm

55. [H⁺] = $\sqrt{K_{a} \cdot C}$

= $\sqrt{2\text{.}1 \times \text{10}^{- \text{12}} \times 1 \times \text{10}^{- 2}}$