NEET-UG 2015 Question Paper — Set 2

Pick up the wrong statement

Which of the following structures is not found in a prokaryotic cell?

The structures that help some bacteria to attach to rocks and / or host tissues are:

In which group of organisms the cell walls form two thin overlapping shells which fit together?

Which one one of the following matches is correct ?

True nucleus is absent in :

The imperfect fungi which are decomposers of litter and help in mineral cycling belong to:

Choose the wrong statements:

Which of the following are most suitable indicators of SO₂ pollution in the environment?

Male gametes are flagellated in:

Which one of the following statements is wrong?

Which one is wrong statement ?

In which of the following gametophyte is not independent free living ?

Read the following five statements (A to E) and select the option with all correct statements:

(A) Mosses and Lichens are the first organisms to colonise a bare rock.

(B) Selaginella is a homosporous pteridophyte.

(C) Coralloid roots in Cycas have VAM.

(D) Main plant body in bryophytes is gametophytic, whereas in pteridophytes it is sporophytic.

(E) In gymnosperms, male and female gametophytes are present within sporangia located on sporophyte.

Male gametophyte in angiosperms produces:

In angiosperms, microsporogenesis and megasporogenesis:

Which of the following characteristics is mainly responsible for diversification of insects on land?

Metagenesis refers to:

Body having meshwork of cell, internal cavities lined with food filtering flagellated cells and indirect develpment are the characteristics of phylum.

A jawless fish, which lays eggs in fresh water and whose ammocoetes larvae after metamorphosis return to the ocean is:

Which of the following animals is not viviparous?

Which of the following represents the correct combination without any exception?

Leaves become modified into spines in:

Perigynous flowers are found in:

Axile placentation is present in:

Coconut water from a tender coconut is:

Which one of the following fruits is parthenocarpic ?

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

is the floral formula of:

Keel is the characteristic feature of flower of:

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

Flowers are unisexual in:

Transmission tissue is characteristic feature of:

In a ring girdled plant:

A major characteristic of the monocot root is the presence of:

Vascular bundles in monocotyledons are considered closed because:

Read the different components from (a) to (d) in the list given below and tell the correct order of the components with reference to their arrangement from outer side to inner side in a woody dicot stem.

(A) Secondary cortex
(B) Wood
(C) Secondary phloem
(D) Phellem

The correct order is:

The body cells in cockroach discharge their nitrogenous waste in the haemolymph mainly in the form of:

The terga, sterna and pleura of cockroach body are joined by:

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

A protoplast is a cell:

Which one of the following is not an inclusion body found in prokaryotes?

Cell wall is absent in:

DNA is not present in:

Nuclear envelope is a derivative of:

Select the correct matching in the following pairs:

Which of the following are not membrane-bound?

The function of the gap junction is to:

Balbiani rings are sites of:

Match the columns and identify the correct option.

Cellular organelles with membranes are:

Which one of the following statements is incorrect?

Which of the following biomolecules does have phosphodiester bond?

The introduction of t-DNA into plants involves:

A somatic cell that has just completed the S phase of its cell cycle, as compared to a gamete of the same species, has:

Select the correct option

Choose the correct option for the following events of meiosis in correct sequence:

(A) Crossing over
(B) Synapsis
(C) Terminalisation of chiasmata
(D) Disappearance of nucleolus

Which one gives the most valid and recent explanation for stomatal movements?

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

Root pressure develops due to:

Roots play insignificant role in absorption of water in :

Transpiration and root pressure cause water to rise in plants by :

Minerals known to be required in large amounts for plant growth include :

The structures that are formed by stacking of organized flattened membranous sacs in the chloroplasts are :

Chromatophores take part in:

Cytochromes are found in :

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

In photosynthesis the light-independent reactions take place at :

Typical growth curve in plants is :

What causes a green plant exposed to the light on only one side, to bend toward the source of light as it grows ?

Auxin can be bioassayed by

Which of the following statements is not correct?

The primary dentition in human differs from permanent dentition in not having one of the following type of teeth:

Gastric juice of infants contains:

When you hold your breath, which of the following gas changes in blood would first lead to the urge to breathe?

Name the pulmonary disease in which alveolar surface area involved in gas exchange is drastically reduced due to damage in the alveolar walls.

Which one of the following is correct?

Erythropoiesis starts in:

Blood pressure in the mammalian aorta is maximum during:

Doctors use stethoscope to hear the sounds produced during each cardiac cycle. The second sound is heard when:

‘Which one of the following animals has two separate circulatory pathways?

Which of the following does not favour the formation of large quantities of dilute urine?

Removal of proximal convoluted tubule from the nephron will result in:

Human urine is usually acidic because :

Sliding filament theory can be best explained as:

Glenoid cavity articulates:

Which of the following joints would allow no movement?

Which of the following is not a function of the skeletal system?

Which of the following regions of the brain is incorrectly paired with its function?

Destruction of the anterior horn cell of the spinal cord would result in loss of:

The number of water molecules is maximum in:

20.0 g of a magnesium carbonate sample decomposes on heating to give carbon dioxide and 8.0 g magnesium oxide. What will be the percentage purity of magnesium carbonate in the sample?

If Avogadro number N_A​ is changed from 6.022 × 10²³  mol⁻¹ to 6.022 × 10²⁰ mol⁻¹, this would change:

What is the mass of precipitate formed when 50 mL of 16.9% solution of AgNO₃ is mixed with 50 mL of 5.8% NaCl solution?

(Ag = 107.8, N = 14, O = 16, Na = 23, Cl = 35.5)

The formation of the oxide ion O²⁻(g), from oxygen atom requires first an exothermic and then an endothermic step as shown below:

O(g) + e⁻→ O⁻(g); Δ_f H° = −141kJ mol⁻¹

O⁻(g) + e⁻ → O²⁻(g); Δ_f H° = +780 kJ mol⁻¹

Thus, the process of formation of O²⁻ ion in the gas phase is unfavourable even though O²⁻ is isoelectronic with neon. It is due to the fact that

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

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

The heat of combustion of carbon to CO₂ is −393.5 kJ/mol. The heat released upon formation of 35.2 g of CO₂ from carbon and oxygen gas is

If the equilibrium constant for

N₂​(g) + O₂​(g) ⇌ 2NO(g) is K, the equilibrium constant for

1/2N₂(g) + 1/2O₂(g) ⇌ NO(g) will be:

What is the pH of the resulting solution when equal volumes of 0.1 M NaOH and 0.01 M HCl are mixed?

Which one of the following pairs of solution is not an acidic buffer?

On heating, which of the following releases CO₂ most easily?

The stability of +1 oxidation state among Al, Ga, In and Tl increases in the sequence:

Which of the following statements is not correct for a nucleophile?

2,3-Dimethyl-2-butene can be prepared by heating which of the following compounds with a strong acid?

In the reaction with HCl, an alkene reacts in accordance with the Markovnikov's rule, to give a product 1-chloro-1-methylcyclohexane. The possible alkene is:

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

The rate constant of the reaction A → B is 0.6 × 10⁻³ mol s⁻¹. If the concentration of A is 5 M, then the concentration of B after 20 minutes is:

In the extraction of copper from its sulphide ore, the metal is finally obtained by the reduction of cuprous oxide with:

Strong reducing behaviour of H₃PO₂ is due to:

Which of the statements given below is incorrect?

The variation of the boiling point of the hydrogen halides is in the order HF > HI > HBr > HCl. What explains the higher boiling point of hydrogen fluoride?

Which is the correct order of increasing energy of the listed orbitals in the atom of titanium?

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

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

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:

The name of complex ion, [Fe(CN)₆]³⁻ is:

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

In an S_N1 reaction on chiral centres there is:

Two possible stereo-structures of CH₃CHOHCOOH, which are optically active, are called:

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

(I) CH₃CH₂OH+HCl —anh. ZnCl₂→

(II) CH₃CH₂OH+HCl →

(III) (CH₃)₃COH+HCl →

(IV) (CH₃)₂CHOH+HCl —anh. ZnCl₂ →

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

Which of the following is not the product of dehydration of ?

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

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

The number of structural isomers possible from the molecular formula C₃H₉N is:

Method by which aniline cannot be prepared is:

The following reaction is known by the name

Caprolactum is used for the manufacture of:

What is the mole fraction of the solute in a 1.00 m aqueous solution ?

Decreasing order of stability of O₂, O₂⁻​​, O₂⁺​ and O₂​²⁻​ is:

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

The vacant space in bcc lattice cell is:

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

The correct statement regarding defects in crystalline solid is: