Eamcet - Chemistry Test

Test Instructions :

1. The Test is 1hr duration.
2. The Test Paper consists of 30 questions. The maximum marks are 30.
3. All the questions are multiple choice question type with three options for each question.
4. Out of the three options given for each question, only one option is the correct answer.
5. Each question is allotted 1 mark for each correct response.
6. 0.25 will be deducted for incorrect response of each question.
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Hydrolysis of trichloro methane with aqueous KOH gives

  

  

  

  

The type of bonds present in sulphuric anhydride

  

  

  

  

The chemical formula of 'tear gas is :

  

  

  

  

pH of a buffer solution decreases by 0.02 units when 0.12 g of acetic acid is added to 250 ml of a buffer solution of acetic acid and Potassium acetate at 270C. The buffer capacity of the solution is

  

  

  

  

The standard reduction potentials of Zn2- | Zn, Cu2+| Cu and Ag+| Cu and Ag+| Ag are respectively -0.76, 0.34 and 0.8 V. The following cells were constructed :1) Zn | Zn 2+||Cu 2+| Cu2) Zn | Zn 2+||Ag +| Ag3) Cu | Cu 2+||Ag +| Agwhat is the correct order of Eocell of these cells?

  

  

  

  

Consider the following reaction N2 (g)+3H2 (g)⇔2NH3 (g).Initially ,1 mole of N2 and 3 moles of H2 are taken in a 2 litre flask.At equilibrium state if the number of moles of N2 is 0.6 what is the total number moles of all gases present in the flask at equilibrium

  

  

  

  

Chemisorption involves

  

  

  

  

Aniline when heated with NaNO2 and HCl at 0.50C the product formed is:

  

  

  

  

The olefin which on ozonolysis gives CH3CH2CHO and CH3CHO is

  

  

  

  

The Kc for the reaction A+B↔C is 4 and Kc for 2A+D↔C is 6. The value of Kc for C+D↔2B is

  

  

  

  

The gas that is used for sterilizing water is

  

  

  

  

How many electrons are present in the M shell of an atom of an clement with atomicnumber 24 (Z = 24) ?

  

  

  

  

Which of the following is not correct

  

  

  

  

Hydrolysis of sucrose with dilute aqueous sulphuric acid yields

  

  

  

  

The equilibrium constants for the reactions N2(g)+O2(g)⇔2NO(g) and NO(g)+1/2O2(g)⇔NO2(g) are K1 and K2 respectively. Then the equilibrium constant for the reaction N2(g)+2O2(g)⇔2NO2(g) is

  

  

  

  

CH3COOH ----LiAlH4--->  AA + CH3COOH ---H3O+ ----->  B + H2OIn the above reactions 'A' and 'B' respectively are

  

  

  

  

75 ml of 0.2 M HCl is mixed with 25 ml of 1 M HCl. To this solution, 300 ml of distilled water is added. What is the pH of the resultant solution

  

  

  

  

Study the following table: Buffer solution Volume(in ml) of 0.M weak Volume(in ml) of 0.1 M sodium salt of weak acid I 4.0 4.0 II 4.0 40.0 III 40.0 4.0 IV 0.1 10.0 Which of the two sets of buffer solutions have least pH?

  

  

  

  

The disperse phase, dispersion medium and nature of colloidal solution (lyophilic or lyophobic) of 'gold sol' respectively are :

  

  

  

  

The earthy impurities present in the mineral are called

  

  

  

  

The ΔG in the process of melting of ice at -150C and 1atm pressure is

  

  

  

  

A molecule (X ) has (i) four sigma bonds formed by the overlap of sp2 and s orbitals (ii) one sigma bond formed by sp2 and sp2 orbitals and (iii) one π bond formed by px and pz orbitals. Which of the following is X ?

  

  

  

  

Which one of the following equations represents the variation of viscosity coefficient (η) with temperature (T) ?

  

  

  

  

0.84 g of metal carbonate reacts exactly with 40 mL of N/2 H2S04. The equivalent weight of the metal carbonate is :

  

  

  

  

3.42g of substance of molecular weight 342 is present in 250g of water.Molality of this solution is

  

  

  

  

The solubility of LiOH in a solution of pH = 8 = is Ksp = 1.8 x 10-12

  

  

  

  

The maximum number of sub-levels, orbitals and electrons in N shell of an atom are respectively

  

  

  

  

Which of the following contains a coordinate covalent bond ?

  

  

  

  

The time for half life of a first order reaction is 1 hour. What is the time taken for 87.5% completion of the reaction

  

  

  

  

At 270C the Kp value for the reaction PCl5(g)⇔PCl3(g)+Cl2(g).is 0.65.Its Kc is

  

  

  

  

Which of the following is a favourable factor for cation formation

  

  

  

  

A certain mass of a gas occupies a volume of 2 L at STP. To what temperature the gas must be heated to double its volume, keeping the pressure constant

  

  

  

  

90 grams of water and 230 grams of an organic liquid n mixing gives a solution in which the mole fraction of water in the resulting solution is 0.5 the molecular weight of the organic liquid is

  

  

  

  

Calorific value of producer gas is low because of

  

  

  

  

Which of the following reacts with ethanol to form chloroform

  

  

  

  

The chemical formula of feldspar is

  

  

  

  

Which of the following is not correct

  

  

  

  

The formula of the product formed, when sodium thiosulphate solution is added to silver bromide is

  

  

  

  

Electrons with a kinetic energy of 6.023 x 104 J/mol are evolved from a surface of a metal, when it is exposed to radiation of wavelength of 600 nm, The minimum amount of energy required to remove an electron from the metal atom is

  

  

  

  

Nitro benzene on reduction with zinc and NH4CI gives

  

  

  

  

Liquid benzene burns in oxygen according to 2C6H6(l)+15O2 (g)→12CO2 (g)+6H2O(l) .How many litres of oxygen are required for complete combustion of 39 gms.Of liquid C6H6

  

  

  

  

Al3+ion has a lower ionic radius than Mg2+ ion because :

  

  

  

  

Which of the following brings about dry bleaching

  

  

  

  

 Which of the following is not correct

  

  

  

  

The atomic numbers of elements X, Y and Z are 19, 21 and 25 respectively. The number of electrons present in the M shell of these elements follow the order

  

  

  

  

The first organic compound synthesized in the laboratory from an inorganic compound is:

  

  

  

  

The difference in ΔH and ΔE for the combustion of methane at 270C would be

  

  

  

  

In which of the following reactions the product is an ether

  

  

  

  

Assertion (A) : A current of 96.5 A is passed into aqueous AgNO3 solution for 100 s. The weight of silver deposited is 10.8 g (At. wt. of Ag = 108)Reason (R) : The mass of a substance deposited during the electrolysis of an electrolyte is inversely proportional to the quantity of electricity passing through the electrolyte.The correct answer is :

  

  

  

  

Which of the following pair of transition metal ions, have the same calculated values of magnetic moment

  

  

  

  

Which one of the following functional groups undergoes hydrolysis with alkali to yield an acid group

  

  

  

  

Which of the following elements has least number of electrons in its M shell ?

  

  

  

  

Which one of the following elements reduces NaOH to Na?

  

  

  

  

A mixture of Haematite,coke and limestone on heating in blast furnace gives molten iron metal.This is known as

  

  

  

  

Which of the following halide does not contain a lone pair of electrons on the central atom

  

  

  

  

The heat of formation of HI from the equation H2+I2→2HI,ΔH=+52 KJ is

  

  

  

  

An organic compound X on treatment with pyridinium chloro chromate in dichloromethane gives compound 'Y". Compound Y reacts with I2 and alkali to form triiodomethane. The compound 'X' is

  

  

  

  

Which one of the following is used as an acid flux in metallurgy ?

  

  

  

  

Which of the following functional group shows +R effect

  

  

  

  

Aluminium reacts with NaOH and forms compound X. If the coordination number of aluminium in X is 6, the correct formula of X

  

  

  

  

A sample of water contains 11.1 ppm of CaCl2 and 9.5 ppm of MGCl2 the hardness of water sample is

  

  

  

  

The value of Kp for the reaction 2H2S(g)⇔2H2(g)+S2(g) is 1.2 x 10-2 at 10650C.The value of KC for the reaction is

  

  

  

  

Which of the following statements is not correct ?

  

  

  

  

Which of the following is not correct

  

  

  

  

If a solid is dispersed in a liquid the colloid is called

  

  

  

  

The equilibrium constant for the reaction is 6.The initial concentration of each of CH3COOH and C2H2OH is two(mole/lit).What is the concentration of CH3COOC2H5 at equilibrium in moles /lit

  

  

  

  

When 9.65 Coulombs of electricity is passed through a solution of AgN03 (atomic weight of silver 108), the amount of silver deposited is

  

  

  

  

Carbogen to

  

  

  

  

The vant Hoff factor for 0.1M Barium nitrate is 2.74. The percentage of dissociation of barium nitrate is

  

  

  

  

Which of the following has the highest first IP

  

  

  

  

A certain current liberated 0.504g of hydrogen in 2hrs. How many grams of copper can be librated by the same current flowing for the same time in a copper sulphate solution

  

  

  

  

The IUPAC name of an unsymmetrical ether with the molecular formula C4H10O:

  

  

  

  

 Fluorine reacts with dilute NaOH and forms a gaseous product A. The bond angle in the molecule of A is

  

  

  

  

Identify the reaction for which ΔH ≠ ΔE :

  

  

  

  

Which of the following compounds when heated with CO at 150"C and 500 atm pressure in presence of BF3 forms ethyl propionate ?

  

  

  

  

Active mass of 56 g of N2 contained in 2 ltr.Flask is

  

  

  

  

The   IUPAC    name    of   the    compound(CH3)2CH-CH=CH-CHOH-CH3 is

  

  

  

  

A mixture of sodium oxide and calcium oxide are dissolved in water,and saturated with excess carbon dioxide gas.The resulting solution is.....It contains.......

  

  

  

  

The element that can exhibit highest number of oxidation states amongst the following:

  

  

  

  

The wavelengths of electron waves in two orbits is 3 : 5. The ratio of kinetic energy of electrons will be

  

  

  

  

Which of the following is not a lipids

  

  

  

  

Assertion (A): the molecularity of reaction is a whole number other than zero , but generally less than 3 Reactions (R): the order of a reaction is always whole number

  

  

  

  

Assertion (A) : At 300 K,kinetic energy of 16 g of methane is equal to the kinetic energy of 32 g of oxygen. Reason (R) : At constant temperature,kinetic energy of one mole of all gases is equal. The correct answer is:

  

  

  

  

If the length of the unit cell is 5 Ao. the smallest distance in Ao between the two neighbouring metal atoms in a face centred cubic lattice is

  

  

  

  

x grams of calcium carbonate was completely burnt in air. The weight of the solid residue formed is 28g. What is the value of x (in grams)

  

  

  

  

Which of the following is not a conjugate acid-base pair

  

  

  

  

A metal nitride contains 28% nitrogen by weight. The molecular formula of metal nitride is M3N2 What is the atomic weight of metal

  

  

  

  

The compound prepared by a substitution reaction of benzene is

  

  

  

  

The molar concentrations of A,B and C at equilibrium for the reaction A+2B⇔3C are 2,3 and 4 moles/lit respectively. Its Kc is

  

  

  

  

For a given reaction which one is higher than the rest among the following

  

  

  

  

An electron is moving in Bohr's fourth orbit. Its de-Broglie wave length is X. What is the circumference of the fourth orbit

  

  

  

  

A moving electron has 4.55 x 10-25 joules of kinetic energy. The wavelength of the electron is (mass = 9.1 x 10-31 kg and h = 6.6 x 10-34 kg m2 sec-1)

  

  

  

  

The rate of the reaction at 400C is 5 units.The rate of same reaction at 800C is nearly(temperature coefficient)

  

  

  

  

The method of separation of enantiomers from racemic mixture is known as

  

  

  

  

In Fischer-Ringe's method of separation of nobles gas mixture, from air is used

  

  

  

  

The degree of dissociation of an acid HA in 0.1 M solution is 0.1%. Its dissociation constant is ;

  

  

  

  

The chemicals and the reaction conditions required for the preparation of ethane are

  

  

  

  

Observe the following statements :I.   Bleaching   powder   is   used   in   the preparation of chloroform.II.  Bleaching powder decomposes in the presence ofCoCl2 to liberate 02.III.Aqueous KHF2 is used in the preparation of fluorine.The correct combination is :

  

  

  

  

At 270C, 500 mL of helium diffuses in 30 minutes. What is the time (in hours) taken for 1000 mL of SO2 to diffuse under same experimental conditions ?

  

  

  

  

For the reaction 2SO2(g)+O2(g)2SO3(g) taking place in one litre vessel, the number of moles of SO2 ,O2,SO3 at equilibrium are 2,1 and 2 moles respectively, under a total pressure of 15 atm.The Kp of the reaction is

  

  

  

  

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