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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   Time Left : 00 : 30    : 00

A codon has a sequence of A and specifies a particular B that is to be incorporated into aC What areA, B, C

  

  

  

  

Which of the following is not a peroxy acid

  

  

  

  

Which of the following statements is not correct ?

  

  

  

  

Alcohol manufactured from water gas is

  

  

  

  

The total pressure of a mixture of 6A of O2 and 5.6 g of N2 present in a 2 litre vessel is 1200 mm. What is the partial pressure (in mm) of nitrogen?

  

  

  

  

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

  

  

  

  

Which one of the following compounds in aqueous solution gives a white precipitate with perichloric acid ?

  

  

  

  

Consider the two gaseous equilibria involving SO2 and the corresponding equilibrium constants at 298K SO2(g)+1/2O2(g)⇔SO3(g);K1 2SO3(g)⇔2SO2(g)+O2(g);K2 The values of the equilibrium constants are related by

  

  

  

  

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

  

  

  

  

X liter of carbon monoxide is present at STP. It is completely oxidized to CO2. The volume of CO2 formed is 11.207 litres. What is the value of X in litres

  

  

  

  

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

  

  

  

  

The conjugate acid of SO42- is

  

  

  

  

Which of the following set of variables give a straight line with a negative slope when plotted ?(P - vapour pressure, T = Temperature in K)

  

  

  

  

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

  

  

  

  

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

  

  

  

  

On adding a little phosphorous to silicon, we get a/an

  

  

  

  

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

  

  

  

  

An oxide of an element is a gas and dissolves in water to give an acidic solution. The element belongs to

  

  

  

  

In aqueous solutions H2O2 oxidises H2S to

  

  

  

  

The molarity of pure water is:

  

  

  

  

If a reaction obeys the following equation. K=2.303/t log10a/a-x, the order of the reaction will be

  

  

  

  

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

  

  

  

  

Which pair of oxyacids of phosphorous contain ‘P - H' bonds

  

  

  

  

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

  

  

  

  

Hydrolysis of chloroform with aqueous KOH gives finally

  

  

  

  

The order of pH of 0.200 M solutions of NH4NO3, NaNO3 and Na2CO3 is

  

  

  

  

Which of the following reacts with benzene in presence of anhydrous aluminum chloride and forms acetophenone ?

  

  

  

  

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

  

  

  

  

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

  

  

  

  

For a reversible reaction, if the concentrations of the reactants are doubled, then the equilibrium constant value

  

  

  

  

The gas that is used for sterilizing water is

  

  

  

  

Which of the following reacts with ammoniacal cuprous chloride

  

  

  

  

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

  

  

  

  

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

  

  

  

  

Among  the following, which is water insoluble

  

  

  

  

Which of the following is the anhydride of HNO3

  

  

  

  

For the reversible reaction C2H4+H2↔C2H6 the equilibrium constant can be expressed in units of

  

  

  

  

Increasing the conc. of the reactant by 27 times, the rate increases by 3 times. What is the order of the reaction?

  

  

  

  

The decomposition of N2O5 → NO2+NO3 proceeds as a first order reaction, with a half-life period of 30 seconds at a certain temperature.The rate constant of the reaction is

  

  

  

  

which of the following is not correcr?

  

  

  

  

In the Born-Haber cycle of the given reaction Na(s) + (1/2)Cl2(g) →NaCl(s)the number of endothermic and exothermic stages respectively are

  

  

  

  

An organic compound X on treatment with pyridium dichromate in dichloromethane gives compound Y.Compound Y reacts with I2 and alkali to form idoform.The compound X is

  

  

  

  

In the long form of periodic table, the elements having lowest ionisation potential are present in :

  

  

  

  

The charge present onn one azide ion in columbs 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

  

  

  

  

Carbogen to

  

  

  

  

The conjugate acid of NH2- ion is:

  

  

  

  

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

  

  

  

  

Dry distillation of calcium acetate and calcium formate forms:

  

  

  

  

The chemical formula of 'tear gas is :

  

  

  

  

The decreasing order of bond dissociation  energies of   C-C , C-H and H-H i bond is

  

  

  

  

"Fluorosis" disease is caused due to the reaction of ________ with excess of fluoride in the body

  

  

  

  

Which of the following biomolecules acts as specific catalysts in biological reaction

  

  

  

  

The correct structure of 4-bromo 3-methyl-but-1-ene:

  

  

  

  

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 ?

  

  

  

  

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

  

  

  

  

The molecule having zero dipole moment is:

  

  

  

  

The type of bonds present in sulphuric anhydride

  

  

  

  

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

  

  

  

  

Identify the reaction for which ΔH ≠ ΔE :

  

  

  

  

The oxidation states of nitrogen in NH4NO3 is /are

  

  

  

  

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

  

  

  

  

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

  

  

  

  

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

  

  

  

  

The chemical entities present in thermosphere of the atmosphere

  

  

  

  

Which of the following pairs of ions are colourless ?

  

  

  

  

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

  

  

  

  

 Which of the following is not correct

  

  

  

  

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

  

  

  

  

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

  

  

  

  

The magnetic oxide of iron is

  

  

  

  

What is the quantity of electricity (in Coulombs) required to deposit all the silverfrom 250 mL of 1 M AgNO3 solution

  

  

  

  

Hydrolysis of trichloro methane with aqueous KOH gives

  

  

  

  

∆x is given by ∆x=(Hydrogen energy-Lattice energy). For a salt ∆x is found to be 500 kcal mol-1.Then on increasing the temperature, its solubility in water

  

  

  

  

A mixture of Boran trichloride and hydrogen is subjected to silent electric discharge to form ’A’ and HCl. ’A’ is mixed with NH3 and heated to 2000 C to form B. The formula of B is

  

  

  

  

An isomer of ethanol is

  

  

  

  

Calorific value of producer gas is low because of

  

  

  

  

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

  

  

  

  

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

  

  

  

  

In nuclear reactor, heavy water is used as a :

  

  

  

  

 Which of the following is a pair of functional isomers

  

  

  

  

The metal used for the de-bromination reaction of 1, 2 dibromoethane

  

  

  

  

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.......

  

  

  

  

NH4NO3 on heating to 2500C-2600C gives the gas

  

  

  

  

Helium mixed with oxygen is used in the treatment of:

  

  

  

  

The solubility of the impurities in the metal in molten and solid states is different. The principle involved in the refining of metal is

  

  

  

  

Which of the following is used for making optical instruments ?

  

  

  

  

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

  

  

  

  

The addition of HCl will not suppress the ionization of

  

  

  

  

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

  

  

  

  

'Natalite' is used as

  

  

  

  

A gaseous mixture contains 56g of N2,44g of CO2 and 16g of CH4.The total pressure of th mixture is 720 mm Hg.The partial pressure of CH4 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

  

  

  

  

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

  

  

  

  

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?

  

  

  

  

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

  

  

  

  

The compound prepared by a substitution reaction of benzene is

  

  

  

  

Which one of the following compounds forms a quaternary salt on reacting with excess methyl iodide ?

  

  

  

  

Which of the following is not an air pollutant

  

  

  

  

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