Eamcet - Chemistry - Chemical Bonding 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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Method used for the concentration of tinstone ore 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

  

  

  

  

A(g)+2B(g)⇔2C(g)+D(g) was studied using an initial concentration of B which was 1.5 times that of A .But the equilibrium concentrations of A and B were found to be equal .Then Kc for the equilibrium

  

  

  

  

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

  

  

  

  

The magnetic oxide of iron is

  

  

  

  

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

  

  

  

  

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

  

  

  

  

Conjugate base of H2SO4 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

  

  

  

  

pH of pure H2O at 250C is

  

  

  

  

Which of the following functional group shows +R effect

  

  

  

  

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

  

  

  

  

CCl3COCH3+Ca(OH)2→X+Y. Here X and Y 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

  

  

  

  

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

  

  

  

  

The active mass of 5.6 litres of O2 at STP is

  

  

  

  

Which of the following is correct

  

  

  

  

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 hemoglobin from the red blood corpuscles of most mammals contains approximately 0.33% of iron by weight. The molecular weight of hemoglobin as 67200.the number of iron atoms in each molecule of hemoglobin is (atomic weight of iron = 56)

  

  

  

  

Which of the following does not participate in carbylamine reaction?

  

  

  

  

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

  

  

  

  

1 mole of PCl5 is heated with 0.2 mole of chlorine in a one litre vessel till equilibrium is established. At equilibrium if 0.8 mole of chlorine in the vessel, the value of equilibrium constant for the dissociation of PCl5 is (in moles-lit-1)

  

  

  

  

The solubility of AgCl in NaCl solution is less than that in pure water,because

  

  

  

  

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

  

  

  

  

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

  

  

  

  

Calculate the hydrolysis constant of a salt of a weak acid(Ka=2x10-6) and of a weak base(Kb=5x10-7)

  

  

  

  

The weakest acid among the following is

  

  

  

  

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

  

  

  

  

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

  

  

  

  

Dipole moment of HC1 = 1.03 D, HI = 0.38 D. Bond length of HC1 = 1.3 and HI = 1.6A .The ratio of fraction of an electric charge, δ, existing on each atom in HC1 and HI is

  

  

  

  

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