Chemistry Mock ...

The unit cell of a certain type of crystal is defined by three vectors a, b and c and the angle between a and b is α, b and c is β and a and c is γ. Now if α = β = γ = 90° and a = b ≠ c. The crystal structure is

Zn and Mg have the following crystal structure

Which of the following statements is not true

Iron at 20°C is BCC with atoms of atomic radius 0.124 nm. What is the lattice constant ‘a’ for the cube edge of the iron unit cell ?

A saturated solution of sugar is prepared by dissolving 62.5 g of it in 250 g of water at 298 K. What is the solubility of sugar in water at this temperature?

For a non-volatile solute

Which has minimum osmotic pressure

A plot of log x/m, against log P is straight line inclines at an angle 45°, when the pressure is 0.4 atm, and Freundlich parameter, k is 100, the amount of solute adsorbed per gram of the adsorbent will be: 

The catalyst used for the reaction SO₂ + O₂ → SO₃ in Contact's Process is:

Which of the following empirical equations represents the Freundlich adsorption curve?

Zn²⁺ → Zn_(s) ; E^o = -0.76 V

Cu²⁺ → Cu_(s); E^o = -0.34 V

Electrode potential of Zn²⁺ / Zn is -0.76 V and that of Cu²⁺ / Cu is + 0.34V. The EMF of the cell constructed between these two electrodes is

The potential of standard hydrogen electrode is zero. This implies that

Limiting molar conductivity of NH₄OH (i.e. λ_m^o (NH₄OH) is equal to 

If doubling the concentration of a reactant 'A' increases the rate 4 times and tripling the concentration of 'A' increases the rate 9 times, the rate is proportional to

T₅₀ of first-order reaction is 10 min. Starting with 10 mol L^-1 rate after 20 min is 

The given plots represent the variation of the concentration of a reactant R with time for two different reactions (i) and (ii) The respective orders of the reactions are 

Which of the following characteristics is not correct for physical adoption

Choose the correct statement

Which of the following facts about complex [Cr(NH₃)₆]CI₃ is wrong

The complex ion which has no 'd' electrons in the central metal atom is

Amongst H₂O, H₂S, H₂Se and H₂Te the one with the highest boiling point is:

In the following reaction the catalyst used is

The acid having O - O bond is

The incorrect statement among the following is

Which of the following statement is wrong

Chlorine acts as bleaching agent only in presence of

The incorrect statement(s) about actinides is/are:

In qualitative analysis when H₂S is passed through an aqueous solution of salt acidified with dil. HCI, a black precipitate is obtained. On boiling the precipitate with dil. HNO_3, it forms a solution of blue colour. Addition of excess of aqueous solution of ammonia to this solution gives ______

Addition of methanol to 2 - methylpropene in the presence of conc. H₂SO₄ gives

Select the incorrect statement(s).

From which of the following tertiary butyl alcohol is obtained by the action of methyl magnesium bromide?

Among the following acids least pK_a value is of

When acetic acid reacts with P₂O₅, product formed

Grignard reagent is a source of

Which of the following is not formed by sandmeyer reaction 

Which one is the Swartz reaction from the following 

ortho and para - nitrophenols are separated by which of the follwoing method?

Phenol reacts with excess of bromine water to produce

Phenolic compound is formed in

Which of the following is Hofmann mustard oil reaction?

Maximum basic in gas phase is

Which of the following compounds have the lowest Boiling rate?

Among the following which one does not act as an intermediate in Hofmann rearrangement?

Greatest amount of hydration is in 

Each polypeptide in a protein has amino acids linked with each other in a specific sequence. This sequence of amino acids is said to be ______

Sucrose molecule is made up of

RNA and DNA are chiral molecules, their chirality is due to

Which of the following statements is not correct?

The drug is used as