Chemistry practice test for C.B.S.E. All India Engineering Entrance Exam. (AIEEE)

Chemistry practice test   for C.B.S.E. All India Engineering Entrance Exam. (AIEEE)
Free online AIEEE Practice Test chemistry
AIEEE sample paper Chemistry
All India Engineering Entrance Examination (AIEEE) is an all-India common entrance examination conducted by CBSE.This is a sample Paper on subject of Chemistry

1. Cyanide process is used for extraction of:

(a) Ag

(b) Ni

(c) Pt

(d) Zn

Ans. (a)

2. An acid solution of 0.005 M has a pH of 5. The degree of ionisation of acid is:

(a) 0.1 x 10^-2

(b) 0.2 x 10^-2

(c) 0.5 x 10^-4

(d) 0.6 x 10^-6

Ans. (b)

3. Which metal gives hydrogen gas on heating with hot concentrated alkali?

(a) Ag

(b) Ni

(c) Zn

(d) Cu

Ans. (c)

4. The conversion of ethyl chloride into diethyl ether takes place by:

(a) Williamson’s synthesis

(b) Perkin’s reaction

(c) Wurtz reaction

(d) Grignard reaction

Ans. (a)

5. CHCl₃ + C₆H₅NH₂ + 3NaOH ← A+3B+3C

In the above reaction, the product ‘A’ is:

(a) Chlorobenzene

(b) Phenyl isocyanides

(c) Phenyl cyanide

(d) Phenyl chloride

Ans. (b)

6. A gas is found to have a formula [CO] _x. Its vapour density is 70, the x is:

(a) 3.0

(b) 3.5

(c) 5.0

(d) 6.5

Ans. (c)

7. Which of the following is used as purgative?

(a) HgS

(b) Hg₂Cl₂

(c) HgC1₂

(d) ZnSO₄

Ans. (b)

8. Least stable oxide of chlorine is:

(a) Cl₂O

(b) ClO₂

(c) C1₂O₇

(d) ClO₃

Ans. (a)

9. The sides of safety matches contains

(a) Red phosphorus + sand powder

(b) P₄S₃

(c) Ca₃ (PO) ₄ + glass pieces

(d) KC1O₃, KNO₃, sulphur + antimony

Ans. (a)

10. Chemically aspirin is known as:

(a) Salicylic acid

(b) Salicylaldehyde

(c) 2-acetoxybenzoic acid

(d) Phenyl salicylate

Ans. (c)

11. Borax is represented as:

(a) Na₂B₄O₅(OH) ₄.8H₂O

(b) Na₂B₄O_7.8H₂O

(c) Na₂B₄O_7. 4H₂O

(d) Na₂B₄O₇.7H₂O

Ans. (a)

12. Which cannot be oxidized by H₂O₂ ?

(a) Na₂5O₃

(b) PbS

(c) KI

(d) O₂

Ans. (d)

13. The gas not absorbed by coconut charcoal is:

(a) He

(b) Ne

(c) Ar

(d) Kr

Ans. (a)

14. K1 and CuSO₄ solutions on mixing produce:

(a) Cu₂1₂ + K₂SO₄

(b) Cu₂1₂ + I₂ + K₂SO₄

(c) Cu1₂ ÷ K₂SO₄

(d) Cu1₂ + I₂ + K₂SO₄

Ans. (b)

15. Vitamin B12 contains:

(a) Co

(b) Mn

(c) Mg

(d) Fe

Ans. (a)

16. Water glass is:

(a) Glass made of water

(b) Sodium silicate

(c) Calcium format

(d) Pyrex glass

Ans. (b)

17. Purification of alumina takes place by:

(a) Bosch process

(b) Hall’s process

(C) Hoope’s process

(d) Quartation process

Ans. (b)

18. What will be the product in the following reaction?

Ans. (a)

19. What will be the TUPAC name of given compound?'

(a) 2, 5-diethyl-4-methylhexane

(b) 3, 4, 6-trimethyloctane

(c) 2, 5, 6-trimethyloctane

(d) 3, 5-dimethyl-6-ethylheptane

Ans. (b)

20. The correct order of hybridisation of the central atom in the following species:

NH₃, [PtCI₄] ^2-, PCl₅ and BCl₃ is:

(a) dsp², dsp³, sp², sp³

(b) sp³, dsp², sp³d, sp²

(c) dsp², sp2, sp3, dsp3

(d) dsp², sp³, sp², sp³

Ans. (b)

21. Unit of mole fraction is:

(a) mol-L

(b) mol/L²

(c) mol/L

(d) Dimensionless

Ans. (d)

22. The equivalent weight of phosphoric acid (H₃PO₄) in the reaction:

NaOH + H₃PO₄ → NaH₂PO₄ + H₂Ois:

(a) 59

(b) 49

(c) 25

(d) 98

Ans. (d)

23.

Ans. (c)

24. DDT is prepared by reacting chlorobenzene with:

(a) CHC1₃

(b) CCl₃ CHO

(c) CCl₄

(d) C₂H₆

Ans. (b)

25. According to Heisenberg’s uncertainty principle, the product of uncertainties in position and ‘velocities for an electron of mass 9.1 xl0^-31 kg is

(a) 2.8 x10^-3 m²s^-1

(b) 3.8x 10^-5 m²s^-1

(c) 5.8 x 10^-5 m²s^-1

(d) 6.8 x 10^-6 m^2-1

Ans. (c)

26. The state of hybridisation of B in BCI₃ is:

(a) sp

(b) sp²

(c) sp³

(d) sp²d²

Ans. (b)

27. The significant figures in 3400 are:

(a) 2

(b) 5

(c) 6

(d) 4

Ans. (a)

28. For a Carnot engine, the source is at 500 K and the sink at 300 K. What is efficiency of this engine?

(a) 0.2

(b) 0.4

(c) 0.6

(d) 0.3

Ans. (b)

29. If 20 g of a solute was dissolved in 500 mL of water and osmotic pressure of the solution was found to be 600 mm of Hg at 15°C, then molecular weight of the solute is

(a) 1000

(b) 1200

(c) 1400

(d) 1800

Ans. (b)

30. Work done during isothermal expansion of one mole of an ideal gas from 10 atm to 1 atm at300 K is:

(a) 4938.8J

(b) 4138.8J

(c) 5744.1J

(d) 6257.2J

Ans. (c)

31. The number of sodium atoms in 2 moles of sodium ferrocyanide is:

(a) 12 x 10²³

(b) 26 x 10²³

(c) 34 x 10²³

(d) 48 x 10²³

Ans. (d)

32. According to Bohr’s principle, the relation between principle quantum number (n) and radius of orbit is

(a) r α n

(b) r α n²

(c) r α 1/n

(d) r α 1/n²

Ans. (b)

33. For an exothermic reaction, the value of:

(a) Δ E is negative

(b) Δ H is positive

(c) Δ H is negative

(d) Δ H equal to zero

Ans. (c)

34. The number of lattice arrangements in different crystal systems are

(a) 8

(b) 7

(c) 9

(d) 14

Ans. (b)

35. If equilibrium constants of reaction,

N₂+ O₂ = 2NO is K₁, and

1/2N₂ + 1/2O₂ =NO is K₂, then:

(a) K1 = K₂

(b) K₂ = √K₁

(c) K₁= 2K₂

(d) K₁ = 1/2K₂

Ans. (b)

36. Wolframite ore is separated from tins tone ore by the process of:

(a) Roasting

(b) Electromagnetic

(c) Smelting

(d) Calcinations

Ans. (b)

37. If solubility product of HgSO₄ is 6.4 x 10, then its solubility is:

(a) 8 x 10^-3 mol/L

(b) 6.4 x 10^-5 mol/L

(C) 6.4 x 10^-3 mol/L

(d) 2.8 x 10^-6 mol/L

Ans. (a)

38. Disintegration constant for a radioactive substance is 0.58 per hour. Its half-life period is:

(a) 82h

(b) 5.2h

(c) 1.2h

(d) 2.4h’

Ans. (c)

39. The rate constant of a reaction depends upon:

(a) Extent of reaction

(b) Time of reaction

(c) Temperature of the system

(d) Concentration of the system

Ans. (c)

40. A cylinder of 5 L capacity, filled with air at NTP, is connected with another evacuated cylinder of 30 L capacity. The resultant air pressure in both the cylinders will be:

(a) 10.8cm of Hg

(b) 14.9cm of Hg

(c) 21.8cm of Hg

(d) 38.8cm of Hg

Ans. (a)

41. The maximum number of hydrogen bonds formed by a water molecule in ice is :.

(a) 4

(b) 5

(c) 7

(d) 3

Ans. (d)

42. The volume strength of 1.5 N H₂O₂ solutions is:

(a) 8.4L

(c) 16.8L

(b) 4.2L

(d) 5.2 L

Ans. (a)

43. When a substance is dissolved in a solvent, the vapour pressure of solvent decreases. It brings:

(a) A decrease in boiling point of the solution

(b) An increase in boiling point of the solution

(c) A decrease in freezing point of the solution

(d) An increase in freezing point of the solution

Ans. (b)

44. Acetone reacts with iodine to form iodoform in the presence of:

(a) CaCO₃

(b) NaOH

(c) KOH

(d) MgCO₃

Ans. (b)

45. The chemical formula of diammine silver (I) chloride is

(a) [Ag(NH₃)]Cl

(b) [Ag(NH₃) ₂ ]Cl

(c) [Ag(NH₃) ₂] ₂ Cl

(d) [Ag (NH₄) ₂] CI

Ans. (b)

46. When alkyl halide is heated with dry Ag20, it produces:

(a) Ester

(c) Ketone

(b) Ether

(d) Alcohol

Ans. (b)

47. The IUPAC name of the compound

(a) 2-methoxy-1-butanol

(b) 3-methoxy-1-butanol

(c) 2-methoxy-1-butanal

(d) 1, 2-methoxy-butanol

Ans. (a)

48. Which of the following has the highest first ionisation energy?

(a) Li

(b) Be

(c) B

(d) C

Ans. (d)

49. Which of the following is used widely in the manufacture of lead storage battery?

(a) Arsenic

(b) Lithium

(c) Bismuth

(d) Antimony

Ans. (d)

50. By annealing, steel:

(a) becomes soft

(b) becomes liquid

(c) becomes hard and brittle

(d) Is covered with a thin film of Fe₃O₄

Ans. (a)

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