Written by 10:54 pm Engineering Entrance Sample Papers

EAMCET Model Paper Chemistry

This EAMCET Model Paper Chemistry has objective type questions with answers as per EAMCET exam level.
Note: Actual EAMCET Question paper will have 80 mathematics questions 40 chemistry and 40 physics questions.

Ques. Certain mass, say x g, of urea was dissolved in 500 g of water and cooled upto – 0.5°C whereby 128 g of ice separates out from the solution. If Cryoscopic constant for water be 1.86° C m–1, the value of x will be
(a) 6 g
(b) 8 g
(c) 12 g
(d) 15 g

Ans. (a)

Ques. Which of the following compounds shows tautomerism
(a) HCHO
(b) CH3CHO
(c) CH3COCH3
(d) HCOOH

Ans. (c)

Ques. A polymer containing nitrogen is
(a) Bakelite
(b) Dacron
(c) Rubber
(d) Nylon-66

Ans. (d)

Ques. Sorption is the phenomenon
(a) reverse of adsorption
(b) reverse of absorption
(c) when adsorption and absorption takes place simultaneously
(d) none of these

Ans. (c)

Ques. Orlon has a unit
(a) Vinyl cyanide
(b) Acrolein
(c) Glycol
(d) Isoprene

Ans. (a)

Related: fungi questions

Ques. Amongst the following hydroxide NaOH, Ca(OH)2, KOH and Zn(OH)2. The weakest base is
(a) NaOH
(b) Ca(OH)2
(c) KOH
(d) Zn(OH)2

Ans. (b)

Ques. In which of the following commercial processes a catalyst is not used
(a) Haber’s process
(b) Deacon’s process
(c) Solvay process
(d) Lead chamber process

Ans. (c)

Ques. The substance initially is reddish-pink. On heating, it gives off a vapour which condenses on the sides of the test tube. The substance turns blue. If on cooling, water is added to the residue it turns to its original colour. The substance is
(a) Iodine crystals
(b) Copper sulphate crystals
(c) Cobalt chloride crystals
(d) Zinc oxide

Ans. (c)

Ques. The internal energy change when a system goes from state A to B is 40 kJ/mole. If the system goes from A to B by a reversible path and returns to state A by an irreversible path what would be the net change in internal energy
(a) 40 kJ
(b) > 0 kJ
(c) < 40 kJ
(d) Zero

Ans. (d)

Ques. Milk is an example of
(a) Pure solution
(b) Gel
(c) Emulsion
(d) Suspension

Ans. (c)

Related: nervous tissue mcq with answers

Ques. The maximum amount of precipitated on mixing equal volumes of BaCl2 (0.5 M) with H2SO4 (1M) will correspond to
(a) 0.5 M
(b) 1.0 M
(c) 1.5 M
(d) 2.0 M

Ans. (a)

Ques. Hydrogen will not reduce
(a) heated cupric acid
(b) heated ferric oxide
(c) heated stannic oxide
(d) heated aluminium oxide

Ans. (d)

Ques. Which of the following elements are analogous to the lanthanides
(a) Actinides
(b) Borides
(c) Carbides
(d) Hydrides

Ans. (a)

Ques. The coordination and oxidation number of X in the compound [X(SO4)(NH3)5] Cl will be
(a) 6 and 4
(b) 10 and 3
(c) 2 and 6
(d) 6 and 3

Ans. (d)

Ques. What weight of hydrated oxalic acid should be added for complete neutralisation of 100 ml of 0.2 N – NaOH solution?
(a) 0.45 g
(b) 0.90 g
(c) 1.08 g
(d) 1.26 g

Ans. (d)

Ques. The oxidation number of cobalt in K[Co(CO)4] is
(a) +1
(b) –1
(c) +3
(d) –3

Ans. (b)

Ques. The boiling point of 0.1 molal aqueous solution of urea is 100.18o C at 1 atm. The molal elevation constant of water is
(a) 1.8
(b) 0.18
(c) 18
(d) 18.6

Ans. (a)

Ques. In the nitrogen family, the H-M-H bond angle in the hybrides (MH3) gradually becomes closer to 90° on going from N to Sb. This shows that gradually
(a) the basic strength of hydrides increases.
(b) almost pure p-orbitals are used for M-H bonding.
(c) the bond energies of M-H bond increases.
(d) the bond pair of electrons become nearer to the central atom.

Ans. (a)

Ques. Liquid ammonia is used in refrigeration because of its
(a) High dipole moment
(b) High heat of vaporisation
(c) High basicity
(d) All of these

Ans. (b)

Related: glycolysis quiz

Ques. For a p – block element, its 3d, 3s, 3p and 4s orbitals are completely filled and the differentiating electron goes to the 4p orbital. The element should have its atomic number in the range
(a) 13 – 18
(b) 21 – 26
(c) 31 – 36
(d) 49 – 54

Ans. (c)

Ques. Nuclides _____
(a) Have specific atomic numbers
(b) Have same number of protons
(c) Have specific atomic number and mass numbers
(d) Are isotopes

Ans. (d)

Ques. The atomic weight of an element is 39. The number of neutrons in its nucleus is one more than the number of protons. The number of protons, neutrons and electrons respectively in its atom would be
(a) 19, 20, 19
(b) 19, 19, 20
(c) 20, 19, 19
(d) 20, 19, 20

Ans. (a)

Ques. A colourless solid (A) dissolves in water. The aqueous solution gives a white precipitate (B) when NaOH or NH4OH is added. (B) dissolves in excess of NaOH but not in excess of NH4OH. BaCl2 solution, when added to a solution of (A) gives a white precipitate (C) which is insoluble in dilute HCl.
(A) may be
(a) Al2(SO4)3
(b) ZnSO4
(c) SnSO4
(d) All of the above

Ans. (d)

Ques. By what ratio the average velocity of the molecule in gas change when the temperature is raised from 50 to 200oC
(a) 1.21 / 1
(b) 1.46 / 1
(c) 1.14 / 1
(d) 4 / 1

Ans. (c)

Related: MCQ on Radioactivity

Ques. Liquified natural gas (LNG) is mainly methane. A 10 m3 tank is constructed to store LNG at –164°C and 1 atm pressure, under this condition density of LNG is 415 kg/m3. The volume of storage tank capable of holding same mass of LNG as a gas at 20°C and 1 atm pressure will be
(a) 1250 m3
(b) 5280 m3
(c) 6230 m3
(d) 9870 m3

Ans. (c)

Ques. Which of the following is a correct statement?
(a) The hydroxide of aluminium is more acidic than that of boron.
(b) The hydroxide of boron is basic, while that of aluminium is amphoteric.
(c) The hydroxide of boron is acidic, while that of aluminium is amphoteric.
(d) The hydroxide of aluminium and boron are amphoteric.

Ans. (c)

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

Ans. (c)

Ques. The coordination number of a cation occupying a tetrahedral hole is
(a) 6
(b) 8
(c) 12
(d) 4

Ans. (d)

Ques. Which metal is found in Khetri region of Rajasthan
(a) Iron
(b) Copper
(c) Gold
(d) Lead

Ans. (b)

Related: Practice Questions on Fluid Mechanics

Ques. Electricity do not pass through ionic compounds
(a) In solution
(b) In solid state
(c) In melted state
(d) None of these

Ans. (b)

Ques. The minimum energy required for molecules to enter into the reaction is called
(a) Potential energy
(b) Kinetic energy
(c) Nuclear energy
(d) Activation energy

Ans. (a)

Ques. Slaked lime is used in the manufacture of
(a) Cement
(b) Fire bricks
(c) Pigment
(d) Medicine

Ans. (a)

Ques. The precipitate obtained in the IV group is dissolved in aqua regia, treated with an excess of KHCO3 and then bromine water is added. The solution develops an apple green colour unchanged on heating. The colour is of
(a) potassium cobaltocarbonate
(b) potassium cobalticarbonate
(c) potassium cobaltibromide
(d) potassium cobaltobromide

Ans. (b)

Ques. The current in a given wire is 1.8 A. The number of coulombs that flow in 1.36 minutes will be
(a) 100 C
(b) 147 C
(c) 247 C
(d) 347 C

Ans. (b)

Related: hydrocarbon test paper

Ques. pKa value of H3O+ at 298 K will be
(a) 1.74
(b) 14
(c) 14
(d) 2.6

Ans. (a)

Ques. Which one of the following elements is most reactive?
(a) He
(b) Ne
(c) Xe
(d) Kr

Ans. (c)

Ques. 100 ml of M/10 acidic K2Cr2O7 was treated with excess of FeC2O4 solution. The volume of CO2 gas
evolved at STP will be
(a) 149.2 ml
(b) 672 ml
(c) 896 ml
(d) 1344 ml

Ans. (c)

Ques. Which of the following metal does not show variable valency
(a) Fe
(b) Hg
(c) Zn
(d) Cu

Ans. (c)

Ques. of urea are present in  solution, the active mass of urea is
(a) 0.2
(b) 0.06
(c) 0.4
(d) 0.08

Ans. (c)

Related: ionic equilibrium questions and answers

Ques. Chloride of an element A gives neutral solution in water. In the periodic table, the element A belongs to
(a) First group
(b) Third group
(c) Fifth group
(d) First transition series

Ans. (a)

Ques. When a piece of wire of copper is dipped in AgNO3 solution, the colour of the solution turns blue due to
(a) Formation of soluble complex
(b) Oxidation of copper
(c) Oxidation of silver
(d) Reduction of copper

Ans. (b)

Ques. The minimum energy necessary to permit a reaction is
(a) Internal energy
(b) Threshold energy
(c) Activation energy
(d) Free energy

Ans. (b)

Ques. Crystals of covalent compounds always have
(a) Atoms as their structural units
(b) Molecules as structural units
(c) Ions held together by electrostatic forces
(d) High melting points

Ans. (a)

Ques. Which metal is found in free state?
(a) Iron
(b) Gold
(c) Aluminium
(d) Sodium

Ans. (b)

Ques. If a electron is present in place of anion in a crystal lattice, then it is called
(a) Frenkel defect
(b) Schottky defect
(c) Interstitial defects
(d) F – centre

Ans. (d)

Ques. The time of completion of 90% of a first order reaction is approximately
(a) 1.1 times that of half life
(b) 2.2 times that of half life
(c) 3.3 times that of half life
(d) 4.4 times that of half life

Ans. (c)

Ques. Ion having least radius is
(a) O-2
(b) Na+
(c) F
(d) Mg+2

Ans. (d)

Ques. The number of secondary hydrogens in 2, 2-dimethyl butane is
(a) 8
(b) 6
(c) 4
(d) 2

Ans. (d)

Ques. The hydrogen phosphate of certain metal has formula MHPO4. The formula of metal chloride would be
(a) MCl
(b) M2Cl2
(c) MCl2
(d) MCl3

Ans. (c)

Related: ecosystem quiz

Ques. Mark the compound which is used as antiknock is petrol fuel
(a) Lead tetra acetate
(b) Basic lead sulphate
(c) Lead tetraethyl
(d) Sublimed white lead

Ans. (c)

Ques. Optically active isomers but not mirror images are called
(a) mesomers
(b) diastereomers
(c) enantiomers
(d) tautomers

Ans. (b)

Ques. The pH of a 0.01 M solution of acetic acid having degree of dissociation 12.5% is
(a) 5.623
(b) 2.903
(c) 3.723
(d) 4.509

Ans. (b)

Ques. Foul smelling compound formed, during carbyl amine reaction is :
(a) Alcohol|
(b) Aldehyde
(c) Alkyl isocyanide
(d) Carboxylic acid

Ans. (c)

Ques. The order of solubility of alkanols in water is
(a) Propanol < Butanol > Pentanol
(b) Propanol > Butanol > Pentanol
(c) Propanol > Butanol < Pentanol
(d) Propanol = Butanol = Pentanol

Ans. (b)

Related: immune system quiz with answers

Ques. How many moles of potassium chlorate to be heated to produce 11.2 litre oxygen
(a) ½ mol
(b) 1/3 mol
(c) 1/4 mol
(d) 2/3 mol

Ans. (b)

Ques. An alkyl halide may be converted into an alcohol by
(a) Addition
(b) Substitution
(c) Dehydrohalogenation
(d) Elimination

Ans. (b)

Ques. Which of the following is a buffer solution
(a) NaCl – NaOH
(b) Na2HPO4 – NaH2PO4
(c) K2SO4 – H2SO4
(d) NaOH – CH4COONa

Ans. (b)

Ques. Weight of a sample of a radioactive element is 100 mg whose half-life is 1 year, then what should be the weight of element left behind after 2 years
(a) 50 mg
(b) 25 mg
(c) 125 mg
(d) 6.25 mg

Ans. (b)

Ques. Which of the following exhibits optical isomerism?
(a) Butanol-1
(b) Butanol-2
(c) Butene-1
(d) Butene-2

Ans. (b)

Ques. The ionic radii of Rb+ and Iare 1.46 Å and 2.16Å. the most probable type of structure exhibited by it is
(a) CsCl type
(b) ZnS type
(c) NaCl type
(d) CaCl type

Ans. (c)

Ques. The product obtained by dry distillation of calcium formate on reacting with ammonia yields
(a) Formamide
(b) Acetamide
(c) Acetaldehyde ammonia
(d) Urotropine

Ans. (d)

Ques. Melting points are normally the highest for
(a) Tertiary amides
(b) Secondary amides
(c) Primary amides
(d) Amines

Ans. (c)

Ques. A gas of volume 100 cc is kept in a vessel at pressure 104 Pa maintained at temperature 24oC. If now the pressure is increased to 105 Pa, keeping the temperature constant, then the volume of the gas becomes
(a) 10 cc
(b) 100 cc
(c) 1 cc
(d) 1000 cc

Ans. (a)

Ques. meso-Tartaric acid is optically inactive due to the presence of
(a) Molecular symmetry
(b) Molecular asymmetry
(c) External compensation
(d) Two asymmetric C-atoms

Ans. (a)

Last modified: August 6, 2023
Close Search Window
Close
error: Content is protected !!