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

What is common between vegetative reproduction and apomixis?
A drupe develops in
Whorled, simple leaves with reticulate venation are present in
Archegoniophore is present in
The correct floral formula of chilli is :
The Van't Hoff factor $I$ for a compound which undergoes dissociation in one solvent and association in other solvent is respectively :
Which of the following is not due to total internal reflection?
Two radioactive nuclei $P$ and $Q$, in a given sample decay into a stable nucleus $R$. At time $t = 0$, number of $P$ species are $4\, N_0$ and that of $Q$ are $N_0$. Half-life of $P$ (for conversion to $R$) is $1$ minute where as that of $Q$ is $2$ minutes. Initially there are no nuclei of $R$ present in the sample. When number of nuclei of $P$ and $Q$ are equal, the number of nuclei of $R$ present in the sample would be
The testes in humans are situated outside the abdominal cavity inside a pouch called scrotum. The purpose served is for
Standard electrode potential of three metals $X, Y $ and $Z$ are $-1.2\,V, + 0.5\,V$ and $-3.0\,V $respectively. The reducing power of these metals will be
By what factor does the average velocity of a gaseous molecule increase when the temperature (in kelvin) is doubled?
Which of the following conditions correctly describes the manner of determining the sex in the given example ?
Bacillus thuringiensis forms protein crystals which contain insectidical protein. This protein
The potential energy of a system increases if work is done
A coil has resistance $30$ ohm and inductive reactance $20$ ohm at $50 \,Hz$ frequency. If an ac source, of $200$ volt, $100\, Hz$, is connected across the coil, the current in the coil will be
A current carrying closed loop in the form of a right angle isosceles triangle $ABC$ is placed in a uniform magnetic field acting along $AB$. If the magnetic force on the arm $BC$ is $\vec{F}$, the force on the arm $AC$ is
Which of the following elements is present as the impurity to the maximum extent in the pig iron?
An organism used as a biofertilizer for raising soyabean crop is
An electron in the hydrogen atom jumps from excited state n to the ground state. The wavelength so emitted illuminates a photosensitive material having work function $2.75 \,eV$. If the stopping potential of the photoelectron is $10 \,V$ , then the value of $n$ is
Fusion reaction takes place at high temperature because
A body is moving with velocity $30\, ms$ towards east After 10 s its velocity becomes $40 \,ms$ towards north. The average acceleration of the body is
According to the Bohr Theory, which of the following transitions in the hydrogen atom will give rise to the least energetic photon?
A solid compound $XY$ has $NaCl$ structure. If the radius of the cation is $100\, pm$, the radius of the anion $(Y^-)$ will be -
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.
The complex, $[Pt(Py)(NH_3)Br\,Cl]$ will have how many geometrical isomers?