List of top Questions asked in NEET (UG)- 2011

Archegoniophore is present in
Arteries are best defined as vessels which
As per chemiosmotic coupling hypothesis, in mitochondria, protons accumulate in the
Biodiversity of geographical region represents
Both hydrarch and xerarch successions lead to
By what factor does the average velocity of a gaseous molecule increase when the temperature (in kelvin) is doubled?
Charge $q$ is uniformly spread on a thin ring of radius $R$. The ring rotates about its axis with a uniform frequency $f\,Hz$ . The magnitude of magnetic induction at the center of the ring is
Common cold is not cured by antibiotics because it is
Consider the following four conditions $(a-d)$ and select the correct pair of them as adaptation to environment in desert lizards. The conditions: 1. Burrowing in soil to escape high temperature. 2. Losing heat rapidly from the body during high temperature. 3. Bask in sun when temperature is low. 4. Insulating body due to thick fatty dermis.
Consider the following processes : $\Delta H (kJ / mol)$ ½ A → B + 150 3B → 2C + D -125 E + A → 2D +350 For B + D → E + 2C, ΔH will be-
Continuous addition of sugars in 'fed batch' fermentation is done to
Enthalpy change for the reaction, $4 H _{( g )} \rightarrow 2 H _{2( g )}$ is $-869.6\, kJ$ The dissociation energy of $H - H$ bond is
Ethanol is commercially produced through a particular species of
Flowers are Zygomorphic in
Force $F$ on a particle moving in a straight line varies with distance $d$ as shown in figure. The work done on the particle during its displacement of $12\, m$ is
Fusion reaction takes place at high temperature because
If power dissipated in the $9\, \Omega$ resistor in the circuit shown is $36$ watt, the potential difference across the $2\, \Omega$ resistor is
In eubacteria, a cellular component that resembles eukaryotic cell is
"Jaya" and "Ratna" developed for green revolution in India are varieties of
Large woody vines are more commonly found in
Pure $Si$ at $500\, K$ has equal number of electron $(n_e)$ and hole $(n_h)$ concentrations of $1.5 \times 10^{16}\, m^{-3}$ Doping by indium increases $n_h$ to 4.5 $\times 10^{22}\, m^{-3}$ The doped semiconductor is of
Some vascular bundles are described as open because these
The cells lining the blood vessels belong to the category of
The ciliated columnar epithelial cells in humans are known to occur in
The density of a material in $CGS$ system of units is $4\,g\,cm^3$. In a system of units in which unit of length is $10\,cm$ and unit of mass is $100\,g$. the value of density of material will be