AIPMT 2015

The oxygen evolved during photosynthesis, comes from water molecules. Which one of the following pairs of elements is involved in this reaction?

During biological nitrogen fixation, inactivation of nitrogenase by oxygen poisoning is prevented by

Which one of the following is not
applicable to RNA?

Satellite DNA is important because it :

Identify the correct order of organisation of
genetic material from largest to smallest :

Balbiani rings are sites of :

Roots play insignificant role in absorption of water in

Axile placentation is present in

Among China rose, mustard, brinjal, potato, guava, cucumber, onion and tulip, how many plants have superior ovary?

The wheat grain has an embryo with one large, shield shaped cotyledon known as

In mammalian eye, the 'fovea' is the center of the visual field, where

Destruction of the anterior horn cells of the spinal cord would result in loss of

In which of the following interactions both
partners are adversely affected?

An association of individuals of different
species living in the same habitat and
having functional interactions is -

Chromatophores take part in

In photosynthesis, the light-independent reactions take place at

Auxin can be bioassayed by

Which one is a wrong statement?

Which of the following pairs is not correctly matched?

A childless couple can be assisted to have a
child through a technique called GIFT. The
full form of this technique is :

Coconut water from a tender coconut is

Which one of the following fruits is parthenocarpic?

Male gametophyte in angiosperms produces

In angiosperms, microsporogenesis and mega-sporogenesis

Filiform apparatus is characteristic feature of

Flowers are unisexual in

A protoplast is a cell -

Outbreeding is an important strategy of
animal husbandry because it :

The body cell in cockroach discharge their
nitrogenous waste in the haemolymph
mainly in the form of -

The function of the gap junction is to -

Root pressure develops due to

A column of water within xylem vessels of tall trees does not break under its weight because of

Which of the following reaction(s) can be used for the preparation of alkyl halides?

Reaction of phenol with chloroform in presence of dilute sodium hydroxide finally introduces which one of the following functional group?

Which one of the following esters gets hydrolysed most easily under alkaline conditions?

The oxidation of benzene by V2O5 in the presence of air produces

Reaction of a carbonyl compound with one of the following reagents involves nucleophilic addition followed by elimination of water. The reagent is

In which of the following pairs, both the species are not isostructural ?

Decreasing order of stability of O2, O2\(-\), O2+ and O22\(-\) is

If the equilibrium constant for
N2(g) + O2(g) \(\rightleftharpoons\) 2NO(g) is K, the equilibrium
constant for \({1 \over 2}\) N2(g) + \({1 \over 2}\)O2(g) \(\rightleftharpoons\) NO(g) will be

The rate constant of the reaction A \(\to\) B is 0.6 \(\times\) 10\(-\)3 mol L\(-\)1 s\(-\)1. If the concentration of A is 5 M, then concentration of B after 20 minutes is

Number of possible isomers for the complex [Co(en)2Cl2]Cl will be (en = ethylenediamine)

The name of complex ion, [Fe(CN)6]3\(-\) is

The hybridization involved in complex [Ni(CN)4]\(2-\) is (At. No. Ni = 28)

The sum of coordination number and oxidation number of the metal M in the complex [M(en)2(C2O4)]Cl (where en is ethylenediamine) is

Gadolinium belongs to 4f series. Its atomic number is 64. Which of the following is the correct electronic configuration of gadolinium?

Assuming complete ionisation, same moles of which of the following compounds will require the least amount of acidified KMnO4 for complete oxidation?

Aqueous solution of which of the following compounds is the best conductor of electric current ?

A gas such as carbon monoxide would be most likely to obey the ideal gas law at

In an SN1 reaction on chiral centers, there is