GATE -2018 Test-First (Chemistry) - IIT JAM MCQ

1 mole of gas expanded isothermal and reversibly from 5L to 10 L. What is the enthalpy change.............

The distance between 3^rd and 2^nd orbit of hydrogen atom is:

The equilibrium   is attained at 25°C in a closed container and an inert gas He is introduced. Which of the following statements are correct:

The number of framework electron pairs present in the borane cluster [B₁₂H₁₂]^2–

Which of the following halides is least stable and has doubtful existence?

The rotational partition function of a diatomic molecule with energy levels corresponding to

J = 0 and 1 (where ε is a constant).

Yellow colour of Ce⁴⁺ and blood red colour of Sm²⁺ due to respectively:

Fraction of total volume occupied by atoms in a simple cubic cell is:

The shape of  molecule become:

A plot of   against log P for the adsorption of a gas on a solid gives a straight line with slope equal to:

The lowest energy state of the (1s)²(2s)¹(3s)¹ configuration of Be is:

Which element have more observed magnetic moment than calculated:

Predict the inverse spinal structures, are among given below:

(I) NiFe₂O₄      (II) ZnFe₂O­₄    (III) Mn₃O₄     (IV) CoFe₂O₄

Amongst the following, the group that is bound to the metal ion in coenzyme B₁₂ is:

Addition of NaBH₄ to   will give:

If Δ₀ is the octahedral splitting energy and P is the electron pairing energy, then the crystal-field stabilization energy [CFSE) of [Co(NH₃)₆]²⁺ is:

How many ¹³C signal will observe in below given compound:

Arrange the following compounds in decreasing order of stretching frequency of C=O

Choose the correct statements regarding given below compounds:

The major product formed in the following reaction is:

Arrange the following compound in decreasing order of reactivity of alkene for expoxidation reaction by peoxy acids:

According to Wade's theory the anion [B₁₂H₁₂]^2– adopts:

The degeneracy of an excited state of a particle in 3-dimensinal cubic box with energy three times its ground state energy is:

A buffer solution can be prepared from a mixture of:

(I) Sodium acetate and acetic acid in water

(II) Sodium acetate and HCl in water

(III) Ammonia and ammonium chloride in water.

(IV) Ammonia and sodium hydroxide in water

The resonance Raman stretching frequencies (in cm^–1) of the bound O₂ species in oxy-hemerythrin and oxy-hemoglobin, respectively, are:

M₁ and M₂ are the slopes   of the solid-liquid equilibrium lines in the p-T phase diagrams of H₂O and CO₂ respectively for P < 10 atm the value of M₁ and M₂ are:

Match the amino acids with their structures: