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 molar conductance of HCl,NaCl and CH3COONa are 426,126 and 91Ω-1cm2mol-1 Respectively. The molar conductance for CH3COOH is

  

  

  

  

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

  

  

  

  

What is the correct order of spin only magnetic moment (in BM) of Mn2+, Cr2+ and V2+ ?

  

  

  

  

Which of the following is correct

  

  

  

  

The order of decrease in atomic radii for Be;Na;Mg is

  

  

  

  

Order of boiling points

  

  

  

  

Which one of the following noble gases is used in miner's cap lamps

  

  

  

  

Which of the following has S---S bond ?

  

  

  

  

Which of the following has the highest first IP

  

  

  

  

8 gram of NaOH is mixed with 9.8 gram of H2SO4 in litre of solution the pH of the solution is

  

  

  

  

A complex compound of CO3+ with molecular formula COClx. yNH3 gives a total of 3 ions when dissolved in water. How many Cl- ions satisfy both primary and secondary valencies in this complex

  

  

  

  

On passing a current through molten KCl 19.5 of K is deposited. The amount of aluminium deposited by the same quantity of electricity if passed through molten AlCl3 is

  

  

  

  

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

  

  

  

  

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

  

  

  

  

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

  

  

  

  

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

  

  

  

  

Which of the following functional group shows +R effect

  

  

  

  

When X amperes of current is passed through molten AlCl3 for 96.5 second,0.09g of alumunium is deposited.What is the value of X

  

  

  

  

Which one of the following order is correct for the first ionization energies of the elements

  

  

  

  

The value of Kc for the reaction N2+3H2 ⇔2NH3 depends on

  

  

  

  

Which one of the following salts give an acidic solution in water

  

  

  

  

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 :

  

  

  

  

The earthy impurities present in the mineral are called

  

  

  

  

Anhydrous Magnesium chloride can be prepared by heating MgCl2.2H2O

  

  

  

  

A mixture contains 10 g of oxygen, 28g of nitrogen and 8g of CH4.Total pressure of mixture is 740mm.What is the partial pressure of nitrogen in mm

  

  

  

  

In the reaction AlCl3+Cl-→[AlCl4]-,AlCl3 acts as

  

  

  

  

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 )

  

  

  

  

At T (K), 100 L of dry oxygen is present in a sealed container. It is subjected to silent electric discharge, till the volumes of oxygen and ozone become equal. What is the volume (in litres) of ozone formed at T (K)?

  

  

  

  

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

  

  

  

  

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

  

  

  

  

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

  

  

  

  

In aqueous solutions H2O2 oxidises H2S to

  

  

  

  

Let electronegativity, ionisation energy and electron affinity be represented as EN, IP and EA respectively. Which one of the following equation is correct according to Mulliken?

  

  

  

  

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

  

  

  

  

Equivalent conductance at infinite dilution,λ0 of NH4Cl,NaOH and NaCl are 128.0,217.8 and 109.9 ohm-1cm2eq-1 respectively. The equivalent conductance of 0.01N NH4OH is 9.30 ohm-1cm2eq-1,then the degree of ionization of NH4OH at this temperature would be(approximately)

  

  

  

  

pH of pure H2O at 250C is

  

  

  

  

The rate constant of a first order reaction at 27°C is 10-3 min-1. The temperature coefficient of this reaction is 2. What is the rate constant (in min-1) at 17°C for this reaction ?

  

  

  

  

Bond energy of Cl2,Br2 and I2 follow the order

  

  

  

  

The froth floatation process is used for the concentration of

  

  

  

  

The nature of forces operating between the adsorbate and the adsorbent in the adsorption occurring at high temperature is

  

  

  

  

Which of the following is not a lipids

  

  

  

  

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

  

  

  

  

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

  

  

  

  

Ultrapure elements are obtained in the following method of metal refining

  

  

  

  

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

  

  

  

  

The correct order of reducing abilities of hydrides of V group elements is

  

  

  

  

HCl+H2O?H3O++Cl- A Conjugate base of HCl is Cl- B Conjugate base of H3O+ is H2O C Conjugateacid base pair is HCl and H3O+ D Conjugateacid base pair is Cl- and H2O

  

  

  

  

Oxide of nitrogen which gives reddish brown colour when exposed to air is

  

  

  

  

The average kinetic energy of one molecule of an ideal gas 270C and 1 atm. pressure is

  

  

  

  

Which of the following is not correct

  

  

  

  

Hydrolysis of NCI3 gives NH3 and X. Which of the following is X ?

  

  

  

  

Ethyl chloride reacts with sodium ethoxide to form a compound A. Which of the following reactions also yields A ?

  

  

  

  

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

  

  

  

  

Electrolysis of X gives Y at anode. Vacuum distillation of Y gives H2O2. The number of peroxy (O-O) bonds present in X and Y respectively are :

  

  

  

  

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

  

  

  

  

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

  

  

  

  

Vicinal dihalide (C2H4Br2) on heating with excess alc.KOH and Zinc dust gives ’y’ and ‘z’ respectively. Both ‘y’ and ’z’ on oxidation with Bayer’s regent gives A and B.A and B respectively are

  

  

  

  

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

  

  

  

  

During electrolytic reduction of aluminia,the reaction at cathode is

  

  

  

  

At 270C the ratio of root mean square velocities of ozone to oxygen is :

  

  

  

  

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

  

  

  

  

Which of the following statements is correct

  

  

  

  

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

  

  

  

  

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

  

  

  

  

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

  

  

  

  

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

  

  

  

  

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 brings about dry bleaching

  

  

  

  

The number of sigma and pi (π) bonds present in benzene respectively are :

  

  

  

  

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

  

  

  

  

The correct trends in the hydrides from Bi to N is

  

  

  

  

The flux used in the extraction of iron from Haematite in the blast furnace is

  

  

  

  

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

  

  

  

  

SiCl4 on hydrolysis forms X and HCI. Compound X loses water at 1000oC and gives Y. Compounds X and Y respectively are

  

  

  

  

When a sample of gas expands from 4.0L to 12.0L against a constant pressure of 0.30 atm, the work involved is (1L ATM=101.35 J)

  

  

  

  

The chemical entities present in thermosphere of the atmosphere

  

  

  

  

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

  

  

  

  

Which of the following is not correct

  

  

  

  

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

  

  

  

  

Which of the following is not correct

  

  

  

  

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

  

  

  

  

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

  

  

  

  

Beryllium shows diagonal relationship with aluminium.Which one of the following similarity is not correct

  

  

  

  

The hydrolysis constant Kh of a salt of NaOH and a weak acid (HX) If the Ka of the acid is Ka=2x10-6

  

  

  

  

The quantum number which explains the line spectra observed as doublets in case of hydrogen and alkali metals and doublets and triplets in case of alkaline earth metals is

  

  

  

  

Chloroethane reacts with Y to form NaCl and Z. One mole of Z reacts with two moles of HI to form water and iodo ethane. Which of the following is Y

  

  

  

  

For the reaction A(g)⇔B(g)+C(g),Kp at 4000C is 1.5x10-4 and Kp at 6000C is 6x10-3 Then the incorrect statement is

  

  

  

  

List-I List-II List-III CH3COONa Alc.KOH Ethylene CHCl2-CHCl2 H2O Acetylene C2H5MgI NaOH+CaO Methane CH3-CH2Cl Zn dust Ethane The correct match is

  

  

  

  

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

  

  

  

  

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

  

  

  

  

Observe the following statements :I.    The physical and chemical properties of elements are periodic functions of their electronic configuration.II.    Electronegativity of fluorine is less than the electronegativity of chlorine.III.   Electropositive nature decreases from top to bottom in a group.The correct answer is :

  

  

  

  

Which of the following alkali metals has the greatest tendency for the half reaction;  M(g) →M+(aq) + e

  

  

  

  

Hydrolysis of trichloro methane with aqueous KOH gives

  

  

  

  

The type of bonds present in sulphuric anhydride

  

  

  

  

Exhausted permutit does not contain .... ion :

  

  

  

  

If H++OH-→H2O.ΔH=-57.3 KJ, then the heat of neutralization for complete neutralization of 1 mole H2SO4 by a base is

  

  

  

  

138 g of ethyl alcohol is mixed with 72 g of water. The ratio of mole fraction of alcohol to water is

  

  

  

  

Three faradays of electricity was passed through an aqueous solution of iron(II) bromide.The weight of iron metal(at.wt=56) deposited at the cathode is(in grams):

  

  

  

  

Bauxite is boiled with aqueous NaOH solution. Sodium meta aluminate solution is formed. This part in the metallurgy of aluminium is called

  

  

  

  

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

  

  

  

  

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