List of top Questions asked in NEET (UG)- 2013

What external changes are visible after the last moult of a cockroach nymph ?

Menstrual flow occurs due to lack of

Global warming can be controlled by

Which one of the following is not a correct statement ?

Isogamous condition with non-flagellated gametes is found in

Among bitter gourd, mustard, brinjal, pumpkin, china rose, lupin, cucumber, sunnhemp, gram, guava, bean, chilli, plum, petunia, tomato, rose, withania, potato, onion, aloe and tulip how many plants have hypogynous flower ?

The tendency of population to remain in genetic equilibrium may be disturbed by

Secondary productivity is rate of formation of new organic matter by

Which one of the following is not used for ex situ plant conservation ?

A stage in cell division is shown in the figure. Select the answer which gives correct identification of the stage with its characteristics.

(1)	Telephase	Nuclear envelop reforms, golgi complex reforms.
(2)	Late Anaphase	Chromosomes move away from equatorial plate, golgi complex not present.
(3)	Cytokinesis	Cell plate formed, mitochondria distributed between two daughter cells.
(4)	Telophase	Endoplasmic reticulum and nucleolus not reformed yet.

Figure shows schematic plan of blood circulation in humans with labels A to D. Identify the label and give its function/s.

According to Darwin, the organic evolution is due to

The three boxes in this diagram represent the three major biosynthetic pathways in aerobic respiration. Arrows represent net reactants or products

Arrows numbered 4, 8, and 12 can all be

Perisperm differs from endosperm in

Which of the following is not correctly matched for the organism and its cell wall degrading enzyme ?

In plant breeding programmes, the entire collection (of plants/seeds) having all the diverse alleles for all genes in a given crop is called

A small object of uniform density rolls up a curved surface with an initial velocity . It reaches up to a maximum height of $\frac{3v^2}{4g}$with respect to the initial position. The object is

During an adiabatic process, the pressure of a gas is found to be proportional to the cube of its temperature. The ratio of Cp/Cv for the gas is

A source of unknown frequency gives 4 beats/s, when sounded with a source of known frequency 250 Hz. The second harmonic of the source of unknown frequency gives five beats per second, when sounded with a source of frequency 513 Hz. The unknown frequency is

Two pith balls carrying equal charges are suspended from a common point by strings of equal length, the equilibrium separation between them is 7. Now the strings are rigidly clamped at half the height. The equilibrium separation between the balls now become

The wavelength $λ_e$ of an electron and $λ_p$ of a photon of same energy E are related by

What is the activation energy for a reaction if its rate doubles when the temperature is raised from 20°C to 35°C ? (R = 8.314 J mol^-1 K^-1)

A hydrogen gas electrode is made by dipping platinum wire in a solution of HCl of pH = 10 and by passing hydrogen gas around the platinum wire at one atm pressure. The oxidation potential of electrode would be

Which of the following lanthanoid ions is diamagnetic ?
(At. nos. Ce = 58, Sm = 62, Eu = 63, Yb = 70)

KMnO₄ can be prepared from K₂MnO₄ as per the reaction:
\(3MnO^{2-}_4+2H_2O⇌2MnO^-_4+MnO_2+4OH^-\)
The reaction can go to completion by removing OH^- ions by adding