Chemistry - 2014 Past Year Paper - Chemistry MCQ

The homolytic breaking of the C_a – C_b bond is easiest in:

Tollen’s test will be negative for:

Which one among the following is a sesquiterpene?

The predicted geometry of TeF₄ by VSEPR theory is:

Among the following, the isoelectric pair is:

The metal ion of an enzyme involved in hydration of CO₂ is:

Among the following, the element having maximum inert pair effect is: [Given : Atomic number of Ge = 30, Pb = 82, Si = 14 and Sn = 50]

The reactivity of compounds I- IV with maleic anhydride (V) follows the order:

Which one among the following molecules is chiral? 

Identify the starting material I in the given reaction:

The major product for the following reaction is:

The structure of the major product in the following reaction is:

The correct orientation of dipoles in pyrrole and pyridine is:

Specific rotations of freshly prepared aqueous solutions of I and II are +112 and +18.7, respectively. On standing, the optical rotation of aqueous solution of I slowly decreases to give a final value of +52.7 due to equilibration with II. Under this state of equilibrium, what is the ratio II : I?

The major product formed in the following reaction is :

In boron neutron capture therapy, the initial boron isotope used and the particle generated after neutron capture respectively are:

The number of a and b particle(s), generated in the following radioactive decay process, are:

In the measurement of hardness of water by complexometric titration, identify P and Q in the following equation.

An aqueous solution of hemoglobin has a molar absorptivity value of 18,600 L mol^–1 cm^–1 for an absorbance value of 0.1 at 540 nm (Given : cell thickness = 1 cm). The concentration (in μM) of the hemoglobin solution is

The electronic transitions responsible for the colour of K₂Cr₂O₇ and porphine in their solid state respectively are:

The correct order of M – C (M = Ti, V, Cr and Mn) bond stretching frequency is: (Given : Atomic number of Ti = 22, V = 23, Cr = 24 and Mn = 25)

For the following reactions, the metal complexes X and Y are:

The correct order of crystal field strength is:
(Given: en = ethylenediamine)

The carbon-oxygen bond in an organic compound absorbs electromagnetic radiation of frequency 6 × 10¹³ Hz. This frequency corresponds to the region:

According to the equipartition principle of energy, the molar heat capacity at constant volume for CO₂(g), SO₂(g) and H₂O(g) follows the trend:

 where h, π, m and α are constants. Then C is:

Among Ar. NH₄Cl, HF and HCI, the strength of interatomic/intermolecular forces follows the order: