Karnataka CET- 2011(Chemistry)

Which one of the nitrogen atoms in H₂N – NH – CO – NH₂ is the most nucleophilic ?

65 coulombs of electric current is passed through fused anhydrous MgCl₂. The magnesium metal thus obtained is completely converted into a Grignard reagent. The number of moles of Grignard reagent obtained is _______

25 g of each of the following gases are taken at 27 ^oC and 600 mm pressure. Which of these will have the least volume?

50 cm³ of 0.2 N HCl is titrated against 0.1 N NaOH solution. The titration was discontinued after adding 50 cm³ of NaOH. The remaining titration is completed by adding 0.5 N KOH. The volume of KOH required for completing the titration is _____

Based on the first law of thermodynamics, which one of the following is correct?

Which one of the following statements is FALSE?

pH value of which one of the following is NOT equal to one?

H₂S is passed into one dm³ of a solution containing 0.1 mole of Zn²⁺ and 0.01 mole of Cu²⁺ till the sulphide ion concentration reaches 8.1 × 10^-19 Which one of the following statements is true? (K_sp of ZnS and CuS are 3 × 10^-22 and 8 × 10^-36 respectively)

The time required for 100% completion of a zero order reaction is _____

The empirical formula of a non-electrolyte is CH₂O. A solution containing 3 g of the compound exerts the same osmotic pressure as that of 0.05 M glucose solution. The molecular formula of the compound is _______

Which one of the following is TRUE?

In chromite ore, the oxidation number of iron and chromium are respectively _______

E₁, E₂ and E₃ are the emfs of the following three galvanic cells respectively :

1. Zn (s) ǀ Zn²⁺ (0.1 M) ǀǀ Cu²⁺ (1M) ǀ Cu (s)
2. Zn (s) ǀ Zn²⁺ (1 M) ǀǀ Cu²⁺ (1M) ǀ Cu (s)
3. Zn (s) ǀ Zn²⁺ (1 M) ǀǀ Cu²⁺ (0.1M) ǀ Cu (s)

Which one of the following is true?

The reagent with which both acetaldehyde and acetone react is _______

Ethyl benzene CANNOT be prepared by ______

Formic acid is a stronger acid than acetic acid. This can be explained using ______

Which one of the following is an intermediate in the reaction of benzene with CH₃Cl in the presence of anhydrous AlCl₃?

Following is the substitution reaction in which -CN replaces -Cl.

R-Cl + KCN_(alco) → R-CN + KCl

To obtain propanenitrile, R-Cl should be _______

If the energies of the two photons are in the ratio 3 : 2, their wavelengths will be in the ratio of ______

Which of the following gives an aldehyde on dry distillation?

Increasing order of carbon-carbon bond length for the following is _____

1. C₂H₄
2. C₂H₂
3. C₆H₆
4. C₂H₆

The standard emf of a galvanic cell involving 2 moles of electrons in its redox reaction is 0.59 V. The equilibrium constant for the redox reaction of the cell is _______

In an alkaline medium, glycine predominantly exists as/in a/an _______

Which one of the following is NOT TRUE for the hydrolysis of t-butyl bromide with aqueous NaOH?

One gram of silver gets distributed between 10 cm³ of molten zinc and 100 cm³ of molten lead at 800^o The percentage of silver left in the lead layer is approximately _______

The number of naturally occurring p-block elements that are diamagnetic is ______

When O₂ is converted into O₂⁺; __________

Consider the following gaseious equilibria with equilibrium constants K₁ and K₂

SO_2(g) + ½ O_2(g) ⇌ SO_2(g)
2SO_3(g) ⇌ 2SO_2(g) + O_2(g)

The equilibrium constants are related as _____

The maximum number of possible optical isomers in 1-bromo-2-methyl cyclobutane is ______

Which one of the following DOES NOT correctly match with each other?

Generally, the first ionization energy increases along a period. But there are some exceptions. The one which is NOT an exception is _____

The enthalpy of vaporization of benzene is +35.3 kJ/mol at its boiling point of 80 ^o The entropy change in the transition of vapour to liquid at its boiling point is ______ (in J mol^-1 K^-1)

Which one of the following is the most energetic conformation of cyclohexane?

In Ramsay and Rayleigh’s isolation of noble gases from air, the nitrogen of the air is finally converted into ______

Which one of the following sets of quantum numbers represents the highest energy level in an atom?

Which one of these is NOT TRUE for benzene?

α-maltose consists of _______

For the reversible reaction, A_(s) + B_(g) ⇌ C_(g) + D_(g) ∆G^o = -350 kJ, which one of the following statements is true?

The IUPAC name of the complex [Co(NH₃)₄ Cl₂]Cl is ________

The compound which gives turbidity immediately with Lucas reagent at room temperature is ______

A mixture of CaCl₂ and NaCl weighing 4.44 g is treated with sodium carbonate solution to precipitate all the calcium ions as calcium carbonate. The calcium carbonate so obtained is heated strongly to get 0.56 g of CaO. The percentage of NaCl in the mixture is ______ (Atomic mass of Ca = 40)

The activation energy of a reaction at a given temperature is found to be 2.303 RT J mol^-1. The ratio of rate constant to the Arrhenius factor is _______

2 g of organic compound on Kjeldahlization liberates ammonia which consumes 30 cm³ of 1 N HCl. The percentage of nitrogen in the organic compound is _____

The following data were obtained during the first order decomposition of 2A_(g) → B_(g) + C_(s) at a constant volume and at a particular temperature.

The rate constant in min^-1 is _________

During the adsorption of Krypton on activated charcoal at low temperature; _________

A buffer solution contains 0.1 mole of sodium acetate dissolved in 1000 cm³ of 0.1 M acetic acid. To the above buffer solution, 0.1 mole of sodium acetate is further added and dissolved. The pH of the resulting buffer is ________

The amount of heat evolved when 500 cm³ of 0.1 M HCl is mixed with 200 cm³ of 0.2 M NaOH is _____

The rms velocity of hydrogen is √7 times the rms velocity of nitrogen. If T is the temperature of the gas, which of the following is true?

Which one of the following is a covalent crystal?

Carbon cannot reduce Fe₂O₃ to Fe at a temperature below 983 K because _____

A solution of two liquids boils at a temperature more than the boiling point of either of them. Hence, the binary solution shows ______

The spin only magnetic moment of Fe⁺² ion (in BM) is approximately ______

The yellow precipitate formed during the chromyl chloride test is chemically _______

The conversion of m-nitrophenol to resorcinol involves respectively ________

Which one of the following DOES NOT involve coagulation?

0.023 g of sodium metal is reacted with 100 cm³ of water. The pH of the resulting solution is ______

Excess of silver nitrate solution is added to 100 ml of 0.01 M Pentaaqua chloro chromium (III) chloride solution. The mass of silver chloride obtained in grams is _______ (Atomic mass of silver is 108).