NEET : Chemistry Practice Paper 2018 (with Soulution)

NEET : Chemistry Practice Paper 2018 (with Soulution)

NEET online test series free for NEET Practice paper 2018 MBBS Entrance Exams. The NEET question paper and with answer for NEET answer key 2018 and target 2018 NEET chemistry. This NEET Practice test paper online are issued by (N.E.E.T.) National Eligibility and Entrance Test

NEET online test series for free 2018 with a view to make the student strong-footed and thus help them come out with flying colours in Pre-Medical/Dental Examinations, 10 years question paper have meticulously prepared 45 question of NEET CHEMISTRY with there answer given below students can download the test Series of NEET Chemistry. neet chemistry syllabus - Hydrogen, s-Block Element (Alkali and Alkaline earth metals), Some p-Block Elements, Organic Chemistry-Some Basic Principles and Techniques, Hydrocarbons, Environmental Chemistry. p-Block Elements, d and f Block Elements, Coordination Compounds, Haloalkanes and Haloarenes, Alcohols, Phenols and Ethers, Aldehydes, Ketones and Carboxylic Acids, Organic Compounds Containing Nitrogen, Biomolecules, Polymers, Chemistry in Everyday Life etc.This online chemistry practice paper of neet will help students to get a good result in there NEET Examination.

Q1Which of the following ionic species has the greatest proton affinity to form stable compound?

NEET: CHEMISTRY Test Series practice paper (Complete Syllabus with Answer Key)

NEET: CHEMISTRY Test Series practice paper (Complete Syllabus with Answer Key)

Q3The Z-isomer among the following is

NEET: CHEMISTRY Test Series practice paper (Complete Syllabus with Answer Key)

Q4Pick out the correct statements from the following :
1. Cobalt (+3) is more stable in octahedral complexes
2. Zinc forms coloured ions or complexes.
3. Most of the d-block elements and their compounds are ferromagnetic.
4. Osmium shows +8 oxidation state.

(a) 1 and 2
(b) 1 and 3
(c) 2 and 4
(d) 1 and 4

Q5The total kinetic energy of a sample of gas which contains N molecules at - 123°C is Ek joules. Another sample of gas at 27°C has total kinetic energy 2Ek joules. The Slither of molecules in the second sample Of gas is

(a) N/2
(b) 2N
(c) N
(d) N2

Q6The Solvay process can be represented by the following scheme
NEET: CHEMISTRY Test Series practice paper (Complete Syllabus with Answer Key)
Identify A, B, C, D arid E

NEET: CHEMISTRY Test Series practice paper (Complete Syllabus with Answer Key)

Q7Which of the following is aromatic?

NEET: CHEMISTRY Test Series practice paper (Complete Syllabus with Answer Key)

Q8In view of the signs of Ar.G° for the following reactions
PbO2 + Pb => 2PbO; ArG° < 0
SnO2 + Sn => 2SnO; At.G°> 0
Which oxidation states are more characteristic for lead and tin?

(a) For lead + 2, for tin + 4
(b) For lead + 4, for tin + 2
(c) For lead + 2, for tin + 2
(d) For lead + 4, for tin + 4

Q9A crystal of lead (II) sulphide has NaCl structure. In this crystal the shortest distance between a Pb2+ ion and S2- ion is 297 pm. What is the volume of the unit cell of lead sulphide?

(a) 209.6 x 10-24 cm3
(b) 26.2 x 10-24 cm3
(c) 52.4 X 10-24 cm3
(d) 104.8 x 10-24 cm3

Q10One dm3solution containing 10-5 mole each of Cl-ons and CrO-24,ions is treated with 10-4 mole of silver nitrate. Which of the following observations is correct?
ksp of Ag2 CrO4 = 4 x 10-12 ,ksp of AgCl = 1 x 10 -10

(a) Precipitation does not occur.
(b) Only silver chromate gets precipitated.
(c) Only silver chloride gets precipitated.
(d) Both silver chromate and silver chloride start precipitating simultaneously.

Q11During dialysis

(a) only colloidal particles can diffuse through animal membrane
(b) solvent molecules, ions- and colloidal particles can diffuse through animal membrane
(c) all kind of particles can diffuse through the animal membrane
(d) only ions can diffuse through the animal membrane.

Q12Which is the best behaviour of Br2 in the reaction
H2O + Br => HOBr + HBr

(a) Proton acceptor only
(b) Both oxidising and reducing
(c) Oxidising only
(d) Reducing only

Q13Arrange the following compounds in the increasing order of bond length of O - O bond
O2, O2[AsFO6], KO2

(a)O2[AsFO6] < O2 < KO2
(b) O2[AsFO6] < KO2 < O2
(c) O2 < O2[AsFO6] < KO2
(d) KO2 < O2 < O2[AsFO6]

Q14Oxidation state of nitrogen is correctly given for

NEET: CHEMISTRY Test Series practice paper (Complete Syllabus with Answer Key)

Q15A pure crystalline substance on heating first forms a turbid liquid at constant temperature and at higher temperature, turbidity completely disappears. The behaviour is a characteristic of substance forming

(a) allotropic crystals
(b) liquid crystals
(c) isomeric crystals
(d) isomorphous crystals.

Q16Consider the following bond cleavages :
NEET: CHEMISTRY Test Series practice paper (Complete Syllabus with Answer Key)

Q17Two elements X (atomic weight = 75) and Y (atomic weight = 16) combine to give a compound having 75.8% X. The formula of the compound is

(a) XY
(b) X2Y
(c) X2Y2
(d) X2Y3

Q18The standard reduction potentials for two reactions are given below :
(i) AgCl(s) + e- ----> Ag(s) Cl-(aq) ; E° = 0.22 V
(ii) Ag+ + e- ----> Ag(s) ; E° = 0.80 V
The solubility product of AgCl under standard conditions of temperature (298 K) is

(a) 1.6 x 10-5
(b) 1.5 x 10-8
(c) 3.2 x 10-10
(d) 1.5 x 10-10

Q19Electromagnetic radiation of wavelength 242 nm is just sufficient to ionise the sodium atom. The ionisation energy of sodium in kJ mo1-1 is

(a) 425
(b) 495
(c) 395
(d) 325

Q20ESulphide ores of metals are usually concentrated by froth floatation process. Which one of the following sulphide ores offers an exception and is concentrated by chemical leaching?

(a) Galena
(b) Copper pyrite
(c) Sphalerite
(d) Argentite

Q21The density of a DNA sample is 1.1 g CM -3 and its molar mass determined by cryoscopic method is found to be 6.0 x 108 g moL-1. What is the volume occupied by one DNA molecule?

(a) 1.0 x 10-15 cm3
(b) 2.0 x 10-15 cm3
(c) 3.0 x 10-15 cm3
(d) 1.7 x 10-23 cm3

Q22 α -Helical structure of a protein has

(a) 3.8 α -amino acids per turn and a 15 membered ring
(b) 3.8 α -amino acids per turn and a 13 membered ring
(c) 3.6 α -amino acids per turn and a 13 membered ring
(d) 3.6 α -amino acids per turn and a 15 membered ring

Q23A human body heats the surroundings at a rate of 200 W. The entropy change of surroundings contributed by the person in a day at 20°C is

(a) 58976 kJ/K
(b) 58.976 kJ/K
(c) 589.76 kJ/K
(d) 5897.6 J/K

Q24Consider the following reactions :
NEET: CHEMISTRY Test Series practice paper (Complete Syllabus with Answer Key)

Q25 Which among the following is the most important factor in making fluorine the strongest oxidising halogen?

(a) Electron affinity
(b) Bond dissociation energy
(c) Hydration enthalpy
(d) Ionisation enthalpy

Q26The following sequence of reactions on (A) gives :
NEET: CHEMISTRY Test Series practice paper (Complete Syllabus with Answer Key)

Q27 Which one of the following orbitals has orbital angular momentum equal to that of 2p-orbital?

(a) 3p
(b) 2d
(c) 3d
(d) 4s

Q28 A solution contains 0.8960 g of K2SO4 in 500 mL solution. Its osmotic pressure is found to be 0.690 atm at 27 °C. The value of van't Hoff factor is

(a) 0.36
(b) 2.72
(c) 2.11
(d) 0.47

Q29 The carbide which is used as abrasive is

(a) CaC2
(b) Al4C3
(c) SiC
(d) all of these.

Q30 Which one of the following statements is true for protein synthesis (translation)?

(a) Amino acids are directly recognized by m-RNA.
(b) The third base of the codon is less specific.
(c) Only one codon codes for an amino acid.
(d) Every t-RNA molecule has more than one amino acid attachment.

Q31 2.9 g of an unknown gas at 95 °C occupies the same volume as 0.184 g of dihydrogen at 17 °C and at the same pressure. What is the molar mass of the unknown gas?

(a) 40 g mol-1
(b) 46 g mol-1
(c) 50 g mol-1
(d) 38 g mol-1

Q32 The reaction of P4 with X leads selectively to P406. Then, X is

(a) dry O2
(b) a mixture of O2 and N2
(c) moist O2
(d) O2 in the presence of aqueous NaOH.

Q33 Element with which of the following electronic configurations will have the highest electron gain enthalpy?

NEET: CHEMISTRY Test Series practice paper (Complete Syllabus with Answer Key)

NEET: CHEMISTRY Test Series practice paper (Complete Syllabus with Answer Key)

Q35 Which of the following plots does not represent the behavior of an ideal binary liquid solution of A and B?

(a) Plot of PB versus XB is linear.
(b) Plot of PA versus XA is linear.
(c) Plot of PTotal versus XA or XB is linear.
(d) Plot of PTotal versus XA is non-linear.

Q36 A buffer solution is prepared in which the concentration of NH3 is 0.3 M and the concentration of NH4+ is 0.2 M. If the equilibrium constant Kb for NH3, equals 1.8 x 10-5, what is the pH of this solution?

(a) 8.73
(b) 9.08
(c) 9.43
(d) 11.72

Q37 Cerium (Z = 58) is an important member of the lanthanoids. Which of the following statements about cerium is incorrect?

(a) The +4 oxidation state of cerium is not known in solutions.
(b) The +3 oxidation state of cerium is more stable than +4 oxidation state.
(c) The common oxidation states of cerium are +3 and +4
(d) Cerium (IV) acts as an oxidising agent.

Q38 Negative soil pollution is

(a) reduction in soil productivity due to erosion and overuse
(b) reduction in soil productivity due to addition of pesticides and industrial wastes
(c) converting fertile land into barren land by dumping ash, sludge and garbage
(d) none of the above.

Q39 In the following sequence of reactions:

NEET: CHEMISTRY Test Series practice paper (Complete Syllabus with Answer Key)

Q40 The number of chiral centers present in the following compound is
NEET: CHEMISTRY Test Series practice paper (Complete Syllabus with Answer Key)

(a) 7
(b) 8
(c) 9
(d) 10

Q41 Which of the following compounds exhibits linkage isomerism?

(a) [Co(en)3] Cl3
(b) [Co(NH3)6] [Cr(en)3]
(c) [Co(en)2(NO2Cl)Br2
(d) [Co(NH3)5Cl]Br2

Q42 The polymer given below is
NEET: CHEMISTRY Test Series practice paper (Complete Syllabus with Answer Key)

(a) natural rubber
(b) gotta percha
(c) neoprene
(d) polypropylene.

Q43 In which of the following molecules/ions, all the bonds are not equal?

(a) SF4
(b) SiF4
(c) XeF4
(d) BF4

Q44 Name the active chemotherapeutic agent present in brufen.

(a) 2-(p-Isobutylphenyl)propanoic acid
(b) Paracetamol
(c) Acetyl salicylic acid
(d) Methyl salicylate

Q45Impure titanium is heated with iodine, titanium iodide is obtained which is removed and heated separately to get back titanium metal. What is this process called?

(a) Mond's process
(b) Mac Arthur Forest process
(c) van Arkel method
(d) Kroll process

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