Monday, May 16, 2011

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) Ca(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) Na2B4O7.8H2O
(c) Na2B4O7. 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)
Ans. (c)
24. DDT is prepared by reacting chlorobenzene with:
(a) CHC13
(b) CClCHO
(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 m2-1
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+ O= 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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