NEET Chemistry Question Papers with Answers based on NEET / CBSE PMT exam pattern and consist 60 single answer objective type questions.
Ques. Dehydration of cyclohexanol yields cyclohexene in 5% yield. How much of cyclohexane will he obtained on 100 g of cyclohexanol?
(a) 75.0 g
(b) 61.5 g
(c) 82.0 g
(d) 41.0 g
Ques. Dispersal of light occurs in which of the following
(a) In the solution of an electrolyte
(b) In a colloidal solution
(c) In electrodialysis
(d) In electroplating
Ques. 34 g of hydrogen peroxide is present in 1120 ml of solution. This solution is called
(a) 10 vol solution
(b) 20 vol solution
(c) 30 vol solution
(d) 32 vol solution
Ques. In NaCl, the number of formula units per unit cell is
(a) 2
(b) 4
(c) 6
(d) 12
Ques. 0.0833 ml of carbohydrate of empirical formula contain of hydrogen. The molecular formula of the carbohydrate is
(a) C5H10O5
(b) C3H4O3
(c) C12H22O11
(d) C6H12O6
Ques. The products of combustion of an aliphatic thiol (RSH) at 298 K are
(a) CO2(g), H2O(g) and SO2(g)
(b) CO2(g), H2O(l) and SO2(g)
(c) CO2(l), H2O(l) and SO2(g)
(d) CO2(g), H2O(l) and SO2(l)
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Ques. Which of the following organic compounds exhibits positive Fehling test as well as Iodoform test?
(a) Methanal
(b) Ethanol
(c) Propanone
(d) Ethanol
Ques. Which of the following acids does not form phenol when its sodium salt is dry distilled with soda lime?
(a) p-Hydroxybenzoic acid
(b) Salicylic acid
(c) m-Hydroxybenzoic acid
(d) Aspirin
Ques. A number of ionic compounds are insoluble in water. This is due to
(a) Ionic compounds do not dissolve in water
(b) Water has a high dielectric constant
(c) Water is not a good ionizing solvent
(d) These molecules have exceptionally high attractive forces in lattice
Ques. From the given sets of quantum numbers the one that is inconsistent with the theory is
(a) n = 3; l = 2; m = –3; s = +½
(b) n = 4; l = 3; m = 3; s = +½
(c) n = 2; l = 1; m = 0; s = –½
(d) n = 4; l = 3; m = 2; s = +½
Ques. For a sparingly soluble salt ApBq, the relationship of its solubility product (LS) with its solubility (S) is
(a) Ls = Sp + q . pp . qq
(b) Ls = Sp + q . pq . qp
(c) Ls = Spq . pp . qq
(d) Ls = Spq . (p.q)p+q
Ques. The weakest interparticle forces are present in:
(a) Thermosetting polymers
(b) Thermoplastic polymers
(c) Fibres
(d) Elastomers
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Ques. Which one of the following statements is correct for alkaline earth metals?
(a) They are diatomic and form ions of the type M2+
(b) They are highly electronegative elements
(c) They are monoatomic and form ions of the type M2+
(d) They are diatomic and form ions of the type M22+
Ques. Classical smog occurs in places of
(a) tourist interest
(b) historical interest
(c) low temperature
(d) high temperature
Ques. The property of hydrogen which distinguishes it from other alkali metals is
(a) its electropositive character
(b) its affinity for non metal
(c) its reducing character
(d) its non-metallic character
Ques. The function of sodium during preparation of Lassaigne’s extract is to
(a) decrease the melting point of the compound
(b) increase the ionisation of the compound.
(c) convert the covalent compound into ionic compound
(d) increase the reactivity of the compound.
Ques. Ammonia is a Lewis base. It forms complexes with cations. Which one of the following cations does not form complex with ammonia
(a) Ag+
(b) Cu++
(c) Cd++
(d) Pb++
Ques. Which of the following is not pesticide?
(a) BHC
(b) DDT
(c) Malathion
(d) Seconal
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Ques. The ability of an ion to bring about coagulation of a given colloid depends upon
(a) Its size
(b) The magnitude of its charge only
(c) The sign of its charge
(d) Both the magnitude and the sign of its charge
Ques. An, example for a double salt is
(a) Potassium ferricyanide
(b) Cobalt hexamine chloride
(c) Cuprous sulphate
(d) Mohr’s salt
Ques. Aluminum is a self–preserving metal, because
(a) It is not tarnished by air
(b) A thin film of basic carbonate on its surface
(c) A non-porous layer of oxide is formed on its surface
(d) It is not affected by salt water
Ques. Which of the following statements is false?
(a) Physical adsorption occurs due to van der Waals forces
(b) Chemical adsorption decreases at high temperature and low pressure
(c) For chemical adsorption, adsorption energy is generally more than that in physical adsorption
(d) All the above statements are true
Ques. An organic compound contains 49.3% carbon 6.84% hydrogen and its vapour density is 73. Molecular formula of the compound is
(a) C3H5O2
(b) C6H10O4
(c) C3H10O2
(d) C4H10O2
Ques. Credit for the ring structure of benzene goes to
(a) Wholer
(b) Faraday
(c) Kekule
(d) Baeyer
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Ques. Identify the correct statement.
(a) Gypsum contains a lower percentage of calcium than Plaster of Paris
(b) Gypsum is obtained by heating Plaster of Paris
(c) Plaster of Paris can be obtained by hydration of gypsum
(d) Plaster of Paris is obtained by partial oxidation of gypsum
Ques. In hydrolysis of aniline, the reagent used is
(a) Dil. HCl
(b) Acetyl chloride
(c) CH3OH
(d) None of these
Ques. When 1-butene is treated with bromine, the expected product is
(a) 1, 1-Dibromobutane
(b) 2, 2-Dibromobutane
(c) 1, 2-Dibromobutane
(d) 1, 2-Dibromobutane
Ques. Heterolytic bond dissociation energy of alkyl halides follows the sequence
(a) R – F > R – Cl > R – Br > R – I
(b) R – I > R – Br > R – Cl > R – F
(c) R – I > R – F > R – Br > R – Cl
(d) R – Cl > R – Br > R – I > R – F
Ques. Which of these do not undergo Wurtz reaction
(a) C2H5F
(b) C2H5Br
(c) C2H5Cl
(d) C2H5I
Ques. Terylene is a condensation polymer of ethylene glycol and
(a) benzoic acid
(b) phthalic acid
(c) salicyclic acid
(d) terephthalic acid
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Ques. The O.P. of equimolar solution of Urea, BaCl2 and AlCl3, will be in the order
(a) AlCl3 > BaCl2 > Urea
(b) BaCl2 > AlCl3 > Urea
(c) Urea > BaCl2 > AlCl3
(d) BaCl2 > Urea > AlCl3
Ques. When 1 litre of a mixture of carbon monoxide and carbon dioxide is treated with charcoal, the final volume becomes1.6 litre. The volumes of carbodioxide in the original mixture was
(a) 200 ml
(b) 400 ml
(c) 600 ml
(d) 800 ml
Ques. Gold number is
(a) The number of mg of lyophilic colloid which should be added to 10 ml of ferric hydroxide sol so as to prevent its coagulation by the addition of 1 ml of 10% sodium chloride solution
(b) The number of mg of lyophilic colloid which should be added to 10 ml of standard gold sol so as to prevent its coagulation by the addition of 1 ml of 10% NaCl
(c) The mg of gold salt to be added to a lyophilic colloid to coagulate it
(d) The mg of an electrolyte required to coagulate a colloid
Ques. The behavior of gas deviates the least from that of an ideal gas at
(a) 550 k and 1 atm
(b) 350 k and 3 atm
(c) 250 k and 4 atm
(d) 450 k and 2 atm
Ques. Which of the following cannot be reduced by H2O2
(a) Ag2O
(b) Fe3+
(c) Acidified KMnO4
(d) Acidified K2Cr2O7
Ques. The density of a gas at 27 degree and 1 atm is ‘d’. At what temperatures would its density the 0.75 d, if the pressure is kept constant?
(a) 20o C
(b) 30o C
(c) 400 K
(d) 300 K
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Ques. Gold number of which of the following is minimum
(a) Gelatine
(b) Starch
(c) Gum
(d) Equal for all of the above
Ques. The viscosity of the solvent depends on
(a) Isothermic nature
(b) Solute – solute interaction
(c) Solute – solvent interaction
(d) Density of the liquid
Ques. Potassium metal crystallizes in a body-centered cubic lattice structure. The number of nearest neighbor atoms for each potassium atom in the solid is
(a) 4
(b) 6
(c) 8
(d) 12
Ques. The vapour pressure of solvent decreased by 10 mm of mercury when a non-volatile solute was added to the solvent. The mole fraction of the solute in the solution is 0.2. What would be the mole fraction of the solvent if the decrease in the vapour pressure is to be 20 mm of mercury?
(a) 0.8
(b) 0.6
(c) 0.4
(d) 0.2
Ques. The decay constant of a radioactive element is 3 x 10–6 min–1. Its half-life is
(a) 2.31 x 105 min
(b) 2.31 x 106 min
(c) 2.31 x 10–6 min
(d) 2.31 x 10–7 min
Ques. An aqueous solution of ammonium acetate is
(a) faintly acidic
(b) fairly acidic
(c) faintly alkaline
(d) almost neutral
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Ques. Dimethyl ether and ethyl alcohol are
(a) Metamers
(b) Homologues
(c) Functional isomers
(d) Position isomers
Ques. The oxidation number of clorine in HOQ is
(a) + 1
(b) –1
(c) 0
(d) –2
Ques. Dispersed phase and dispersion medium in blood are respectively
(a) solid and solid
(b) liquid and solid
(c) solid and liquid
(d) liquid and liquid
Ques. Atomic number of next inert gas if discovered will be
(a) 87
(b) 104
(c) 118
(d) 132
Ques. Which one of the following pairs of solutions can we expect to be isotonic at the same temperature
(a) 0.1 M urea and 0.1 M NaCl
(b) 0.1 M urea and 0.2 M MgCl2
(c) 0.1 M NaCl and 0.1 M Na2SO4
(d) 0.1 M Ca (NO3)2 and 0.1 M Na2SO4
Ques. In the manufacture of iron from an ion oxide ore, limestone is added because it acts as
(a) an oxidizing agent
(b) an reducing agent
(c) a precipitating agent
(d) a flux
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Ques. Converting n-hexane into benzene in the presence of chromium oxide on alumina support is an example of reaction called
(a) Hydrogenation
(b) Isomerisation
(c) Aromatisation
(d) None of these
Ques. Nature of charge on the particles can be determined, by which of the following properties of a colloidal systems
(a) Electrophoriesis
(b) Dialysis
(c) Absorption
(d) Ultamicrofiltration
Ques. Vapour density of an organic compound is 23.0. It contains 52.17% of carbon and 13% of hydrogen. The compound gives iodoform test. The compound is
(a) ethanol
(b) dimethyl ether
(c) acetone
(d) methanol
Ques. When a beam of light is passed through a colloidal solution, then this beam of light?
(a) Gets diffracted
(b) Passes unchanged
(c) Shows a rainbow
(d) Gets dispersed
Ques: Molecular formula of chloropicrin is
(a) CHCl3NO2
(b) CCl3NO3
(c) CCl2NO2
(d) CCl3NO2
Ques. Which of the following organic compounds exhibits positive Fehling test as well as Iodoform test?
(a) Methanal
(b) Ethanol
(c) Propanone
(d) Ethanol
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Ques. Hydrolytic reaction of fats by caustic soda is known as
(a) Acetylation
(b) Carboxylation
(c) Esterification
(d) Saponification
Ques. The weakest interparticle forces are present in:
(a) Thermosetting polymers
(b) Thermoplastic polymers
(c) Fibres
(d) Elastomers
Ques. Which of the following is an example of a polymolecular colloidal system?
(a) Soap distributed in water
(b) Protein distributed in water
(c) Gold distributed in water
(d) Rubber distributed in water
Ques. The Abbreviation ATP represents:
(a) Atmospheric Temperature and Pressure
(b) Adenosine Triphosphate
(c) An abberevation of some disease
(d) None of these
Ques. 10 dm3 of N2 gas and 10 dm3 of gas X at the same temperature contain the same number of molecules. The gas X is
(a) CO
(b) CO2
(c) H2
(d) NO
Ques. Which of these is a hypnotic?
(a) metaldehyde
(b) acetaldehyde
(c) paraldehyde
(d) None of these
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Ques. Classical smog occurs in places of
(a) tourist interest
(b) historical interest
(c) low temperature
(d) high temperature
Ques. Which of the following is not needed for the metallurgy of aluminium?
(a) Carbon electrodes
(b) A flux such as cryolite
(c) Sodium carbonate for refining bauxite
(d) Fe powder for reduction of Al2O3
Ques. The process of zone refining is based upon
(a) fractional crystallization
(b) fractional distillation
(c) magnetic properties of impurities
(d) impurities are less fusible than metals
Ques. Osmotic pressure of blood at 27°C is 123 atmosphere, then at which concentration of glucose its osmotic pressure will be equal to the osmotic pressure of blood
(a) 1.0M
(b) 0.5M
(c) 1.5M
(d) 2.0M
Ques. If concentration of reactants is increased by ‘x’, then K becomes
(a) ln (K/x)
(b) K/x
(c) K + x
(d) K
Ques. Aniline cannot be prepared by which of the following reactions
(a) Reduction of a nitro compound
(b) Wurtz method
(c) Hofmann hypobromite reaction
(d) Reduction of aldoxime
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Ques. The region in which main metals are found in earth is called
(a) Atomophil
(b) Lithophil
(c) Calcophil
(d) Siderophil
Ques. The pH of a 0.01M solution of acetic acid having degree of dissociation 12.5% is
(a) 5.623
(b) 2.903
(c) 3.723
(d) 4.509
Ques. The electrons identified by quantum numbers n and l (i) (ii) (iii) (iv) can be placed in order of increasing energy from the lowest to highest, as
(a) (iv) < (ii) < (iii) <(i)
(b) (ii) < (iv) < (i) < (iii)
(c) (i) < (iii) < (ii) < (iv)
(d) (iii) < (i) < (iv) < (ii)
Ques. The root mean square speeds at STP for the gases H2, N2, O2 and HBr are in the order
(a) H2 < N2 < O2 < HBr
(b) HBr < O2 < N2 < H2
(c) H2 <N2 = O2 < HBr
(d) HBr < O2 < H2 < N2
Ques. During emission of Beta-particle
(a) One electron increases
(b) One electron decreases
(c) One proton increases
(d) No change
Ques. Internal energy does not include
(a) Nuclear energy
(b) Rotational energy
(c) Vibrational energy
(d) Energy arising by gravitational pull
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Ques. The influence of temperature on the rate of reaction can be found out by
(a) Clapeyron–Claussius equation
(b) Gibbs–Helmholtz equation
(c) Arrhenius equation
(d) Vander Waal’s equation
Ques. A catalyst
(a) Increases the average kinetic energy of reacting molecules
(b) Increases the activation energy
(c) Alters the reaction mechanism
(d) Increases the frequency of collisions of reacting species
Ques. Which metal among following has strongest tendency to undergo oxidation?
(a) Zn
(b) Cu
(c) Mg
(d) Al
Ques. Preparation of alkyl halides in laboratory is least preferred by
(a) Halide exchange
(b) Direct halogenation of alkanes
(c) Treatment of alcohols
(d) Addition of hydrogen halides to alkenes
Ques. The mass of copper deposited from a solution of CuSO4 by passage of 5 A current for 965 second is (Mol. wt. of Copper = 63.5)
(a) 15.875 g
(b) 1.5875 g
(c) 4825 g
(d) 96500 g
Ques. The most stable conformation of n-butane is
(a) Skew boat
(b) Eclipsed
(c) Gauche
(d) Staggered
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Ques. Copper gets deposited from acidic copper sulphate and alkaline copper cyanide. If same amount of current is passed for same time, then which of the following statements will be true
(a) Equal amounts of copper will be deposited
(b) Amount deposited from alkaline copper cyanide will be double
(c) Amount deposited from alkaline copper cyanide will be half
(d) All are wrong
Ques. Which of the following elements will have the lowest electron affinity
(a) Nitrogen
(b) Flourine
(c) Chlorine
(d) Phosphorus
Ques. Which of the following compounds has lower base strength than the remaining three?
(a) Ammonia
(b) Trimethylamine
(c) p-Toluidine
(d) N-Phenylchloramine
Ques. Non-metallic oxides dissolves in water to form
(a) Acidic solution
(b) Alkaline solution
(c) Neutral solution
(d) None of these
Ques. Which of the following compounds, obtained on reduction of aniline in alkaline medium, is not a secondary reduction product of aniline?
(a) Azobenzene
(b) Azoxybenzene
(c) Hydrazobenzene
(d) p-aminophenol
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Ques. Which of the following compounds is obtained on heating Benzaldehyde in Perkin’s reaction?
(a) melonic ester
(b) bromoacetic ester
(c) acetic anhydride
(d) sodium acetate
Ques. Which of the following processes cannot be employed for the perparation of benzaldehyde?
(a) Sommelet’s reaction
(b) Etard’s reaction
(c) Stephen’s reaction
(d) Perkin’s reaction
Ques. Which of the following conditions is favourable for the formation of p-aminophenol from nitrobenzene?
(a) Electrolytic reduction
(b) Alkaline medium
(c) Neutral medium
(d) Catalytic reduction
It is good but instead of only answers it is better to giving explanation to know
Have any neet questions in Gujarati this is possible? I want to give neet in gujarati and so what material i can use ???