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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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

  

  

  

  

Absolute alcohol (100% alcohol) is prepared by distilling rectified spirit over:

  

  

  

  

In which of the following cases, the reaction is spontaneous at all temperatures

  

  

  

  

The pH of a solution of H2O2 is 6.0, Some chlorine gas is bubbled into this solution. Which of the following is correct

  

  

  

  

The following are some statements related to VA group hydrides,I . Reducing  property increases from NH3 to BiH3.II..Tendency to donate lone pair decreases from NH3 to BiH3III.Thermal stability of hydrides decreases from NH3 to BiH3.IV. Bond angle of hydrides decreases from NH3 to BiH3.The correct statements are

  

  

  

  

Which of the following is added to chloroform to slow down its aerial oxidation in presence of light ?

  

  

  

  

Which of the following is not correct

  

  

  

  

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

  

  

  

  

In the reaction AlCl3+Cl-→AlCl4-, AlCl3 is

  

  

  

  

The oxidation states of nitrogen in NH4NO3 is /are

  

  

  

  

In the reaction BCl3+PH3→[Cl3B←PH3] the lewis base is

  

  

  

  

A radioactive substance 88X228 (IIA) emits 3α and 3β particles to form "Y". To which group of long form of the periodic table does "Y" belong

  

  

  

  

The final product formed on the strong heating of H3BO3

  

  

  

  

x grams of water is mixed in 69 g of ethanol. Mole fraction of ethanol in the resultant solution is 0.6. What is the value of x in grams ?

  

  

  

  

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

  

  

  

  

Assertion (A) : NaCl is less soluble in heavy water than in ordinary water,Reason (R) : Dielectric constant of ordinary water is more than that of heavy waterThe correct answer is

  

  

  

  

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

  

  

  

  

The froth floatation process is used for the concentration of

  

  

  

  

Calculate the emf of the cell   Cu (s) | Cu2+ (aq) || Ag+ (aq) | Ag (s)  GivenEoCu2+/Cu  = +0.34V ,  EoAg+/Ag  =0.80 V

  

  

  

  

Observe the following reaction2A + B → CThe rate of C is 2.2 x 10-3 mol L-1 min-1.What is the value of - d[A]/dt (in mol. L-1min-1)

  

  

  

  

The bonds in K4Fe(CN)6 are:

  

  

  

  

Which among the following element does not liberate H2 gas on reaction with NaOH?

  

  

  

  

The chemical formula of 'tear gas is :

  

  

  

  

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 charge present onn one azide ion in columbs is

  

  

  

  

Sodium is heated in air at 3000C to form X. X absorbs CO2 and forms Na2CO3 and Y. Which of the following is Y

  

  

  

  

The two sulphur atoms in Na2S2O3 have

  

  

  

  

Assertion(A): A catalyst has no effect on the state of equilibrium Reason:A catalyst influences the rates of both forward and backward reactions to the same extent

  

  

  

  

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 ?

  

  

  

  

What is the temperature at which the kinetic energy of 0.3 moles of Helium is equal to the kinetic energy of 0.4 moles of Argon at 400 K ?

  

  

  

  

The earthy impurities present in the mineral are called

  

  

  

  

Which of the following functional group shows +R effect

  

  

  

  

Hydrolysis of trichloro methane with aqueous KOH gives

  

  

  

  

n moles of an ideal gas at temperature T (in kelvin) occupy VL of volume, exerting a pressure of P atmospheres.What is the concentration (in mol / L)?

  

  

  

  

......of a reaction cannot be determined experimentally:

  

  

  

  

Assertion (A) : A catalyst increases the rate of a reaction.Reason (R) : In presence of a catalyst, the activation energy of the reaction increases. The correct answer is

  

  

  

  

The IUPAC name for CH3-CH2-CH(OH)-CH=CH2

  

  

  

  

The functional groups present in 'salol' are

  

  

  

  

'Natalite' is used as

  

  

  

  

The molar capacity(Cp)of water at constant pressure is 75 J.K-1.mol-1.The increase in temperature (in K) of 100 g of water when 1 K.J. of heat is supplied to it is

  

  

  

  

The charge required to reduce 1 mole Cr2O7-2 to Cr+3 ions 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?

  

  

  

  

AB is an ionic solid. The ionic radii of A+ and B- are respectively rc and ra. Lattice energy of AB is proportional to :

  

  

  

  

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

  

  

  

  

The magnetic oxide of iron is

  

  

  

  

Which of the following is a lyophobic colloidal solution ?

  

  

  

  

148mg of Ca(OH)2 is required to remove hardness of one lit. of hard water by Clarke’s process. If hardness is due to only calcium bicarbonate, what is the degree of hardness of sample of water?

  

  

  

  

The chemical formula of feldspar is

  

  

  

  

Molar conductivity of a solution 1.26 x 102Ω-1cm2mol-1 ,its molarity is 0.01.its specific conductivity will be

  

  

  

  

Bond energy of Cl2,Br2 and I2 follow the order

  

  

  

  

For the redox reaction Cr2O72+ + C2O42+ + H+ → Cr3+ + CO2 + H2O the correct coefficients of Cr2O72-, C2O42- and H+ in the balanced equation are

  

  

  

  

List -I List-II (A) Flespar (I) [Ag3SbS3] (B) Asbestos (II) Al2O3 . H2O (C) Pyrargyrite (III) MgSO4 . H2O (D) Diaspore (IV) KAlSi3O3 (V) CaMg3(SiO3)4

  

  

  

  

Aniline is treated with NaNO2 and HCl at 00C,the product formed is:

  

  

  

  

Which of the following pair of ions have same paramagnetic moment

  

  

  

  

The rate of gaseous reaction is give by k[A][B].If the volume of reaction vessel is reduced to 1/4 of initial volume the reaction rate relative to the original rate is

  

  

  

  

Number of coulombs of current required to convert completely 1 mole of MnO4- ions in acid medium to one mole of Mn2+ ions electrolytically is

  

  

  

  

The conjugate base of HSO4- ion is:

  

  

  

  

Ethylene reacted with bromine in CCl4 to form X. When X is reacted with alcoholic KOH, Y is formed. X and Y are respectively :

  

  

  

  

Which of the following is not correct

  

  

  

  

Aqueous solution of an organic compound, 'A' on electrolysis liberates acetylene and CO2 at anode. 'A' is

  

  

  

  

Assertion (A): The PH of a buffer solution containing equal moles of acetic acid and sodium acetate is 4.8  (pKa of acetic acid is 4.8)Reason (R): The ionic product of water at  250C is l0-14 mol2 .L-2. The correct answer is

  

  

  

  

 Which of the following is a pair of functional isomers

  

  

  

  

X,Y,Z hydrocarbons molecular formula are CH4, C2H4, C2H2, these three are passed through porcelain tube containing ammonical cuprous chloride. The out coming gases would be

  

  

  

  

1.5 g of CdCl2 was found to contain 0.9 g of Cd. Calculate the Atomic weight of Cd

  

  

  

  

Which of the following reactions can produce aniline as main product

  

  

  

  

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

  

  

  

  

The half-lives of two radioactive nuclides A and B are 1 and 2 min respectively. Equal weights of A and B are taken separately and allowed to disintegrate for 4 min. What will be the ratio of weights of A and B disintegrated

  

  

  

  

Which of the following reagents and conditions convert benzene to chlorobenzene

  

  

  

  

If ΔE is the heat of reaction for C2H5OH(1)+3O2(g)→2CO2(g)+3H2O(l) at constant volume,the ΔH(Heat of reaction at constant pressure)at constant temperature is

  

  

  

  

In the extraction of sodium by Down's process, cathode and anode are respectively:

  

  

  

  

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

  

  

  

  

In which of the following reactions the product is an ether

  

  

  

  

In the extraction of copper, the slag formed in the blast furnace

  

  

  

  

Which of the following not obtained when methyl chloride and n-propyl chloride react with sodium in dry ether

  

  

  

  

Which of the following is obtained in carbyl amine reaction from aniline

  

  

  

  

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

  

  

  

  

One mole of fluorine is reacted with two moles of hot concentrated KOH. The products formed are KF, H2O and O2. The molar ratio of KF, H2O and O2 respectively is

  

  

  

  

Identify the correct order in which the covalent radius of the following elements increasesI. TiII. CaIII. Sc

  

  

  

  

5.85 gms of NaCl (Mol. wt. 58.5) is dissolved in water and the solution made up to 500ml; the molarity of the solution will be

  

  

  

  

The number of pπ - dπ 'pi' bonds present in XeO3and XeO4molecules, respectively are

  

  

  

  

The vapour pressure of water at 230C is 19.8 mm. 0.1 mole of glucose is dissolved in 178.2 g of water. What is the vapour pressure (in mm) of the resultant solution

  

  

  

  

When compound X is oxidised by acidified potassium dichromate, compound Y is formed. Compound Y on reduction with LiAlH4 gives X. X and Y respectively are :

  

  

  

  

Three faradays of electricity are passed through molten Al2O3. Aqueous solution of CuSO4 and molten NaCl taken in three different electrolytic cells. The amount of Al, Cu and Na deposited at the cathodes will be in the ratio of

  

  

  

  

In nuclear reactor, heavy water is used as a :

  

  

  

  

Solubility product of Ba(OH)2 and Al(OH)3 are 1.8x10-10 and 2.4x10-20 respectively.If both Al3+ and Ba+2 ions are present is a solution,which one will be precipated on addition of Ammonium hydroxide solution

  

  

  

  

Dry distillation of calcium acetate and calcium formate forms:

  

  

  

  

During the electrolysis of cyrolite,aluminium and fluorine are formed in.......molar ratio

  

  

  

  

Which of the following is not a peroxy acid

  

  

  

  

Which one of the following reactions does not form gaseous product

  

  

  

  

In which of the following reactions, the concentration of reactant is equal to concentration of product at equilibrium(K=equilibrium constant)

  

  

  

  

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

  

  

  

  

Helium mixed with oxygen is used in the treatment of:

  

  

  

  

The equilibrium constant for the reactionSO2(g) + (1/2) O2(g) <====> SO3(g) is  5 x 10-2 atm  The equilibrium constant of the reaction2SO3(g)  <====> 2SO2(g) + O2(g) would be

  

  

  

  

For a reaction A+B→ products,the rate of the reaction was doubled.When the concentration of A was doubled.When the concentration of A and B were doubled.The order of the reaction with respect to A and B are

  

  

  

  

The value of Kp for the reaction 2H2S(g) ⇔ 2H2(g) + S2(g) is 1.2X10-2 at 10650C.The value of KC for the reaction

  

  

  

  

Which of the following is called Rosenmund reaction?

  

  

  

  

Which of the following compounds answer positively carbyl amine test? A) C6H5NHCH3 B) CH3-C6H6-NH2 C) C6H6-NH2 D) C6H6-NH (CH3)2

  

  

  

  

Which of the following converts acetic acid into acetyl chloride

  

  

  

  

The energy of a photon is 3 x 10-12 ergs.What is its wavelength in nm ?( h = 6.62 x 10 -27ergs-s ; c = 3 x 10 10 cm/s )

  

  

  

  

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

  

  

  

  

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