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

Which one of the following correctly represents the normal adult human dental formula?
Which one of the following animals may occupy more than one trophic levels in the same ecosystem at the same time?
Which one of the following acts as a physiological barrier to the entry of microorganisms in human body ?
Which of the following is not due to total internal reflection?
Which of the following is not a fat soluble vitamin ?
Which of the following is correct option for free expansion of an ideal gas under adiabatic condition ?
Which of the following has the minimum bond length?
Which one of the following is present as an active ingredient in bleaching powder for bleaching action?
A charge $Q$ is enclosed by a Gaussian spherical surface of radius $R$. If the radius is doubled, then the outward electric flux will
The cork cambium, cork and secondary cortex are collectively called :
Consider the following four statements $(A-D)$ related to the common frog Rana tigrina, and select the correct option stating which ones are true $(T)$ and which ones are false $(F)$ . Statements : (A) On dry land it would die due to lack of $O _{2}$ if its mouth is forcibly kept closed for a few days (B) it has four-chambered heart (C) On dry land it turns uricotelic from ureotelic (D) Its life-history is carried out in pond water
A solid compound $XY$ has $NaCl$ structure. If the radius of the cation is $100\, pm$, the radius of the anion $(Y^-)$ will be -
A Zener diode, having breakdown voltage equal to $15\,V$, is used in a voltage regulator circuit shown in figure. The current through the diode is
Acidified $K_2Cr_2O_7 $ solution turns green when $Na_2SO_3 $ is added to it. This is due to the formation of
Agarose extracted from sea weeds finds used in
Bacillus thuringiensis forms protein crystals which contain insectidical protein. This protein
Clemmensen reduction of a ketone is carried out in the presence of which of the following?
Electrons used in an electron microscope are accelerated by a voltage of $25\, kV$. If the voltage is increased to $100\, kV$ then the de-Broglie wavelength associated with the electrons would
For the four successive transition elements $(Cr, Mn, Fe$ and $Co)$ , the stability of $+ 2$ oxidation state will be there in which of the following order? (At. no. $Cr = 24, Mn = 25, Fe = 26,Co = 27$ )
In photoelectric emission process from a metal of work function $1.8\, eV$, the kinetic energy of most energetic electrons is $0.5\, eV$. The corresponding stopping potential is
What is the value of electron gain enthalpy of $Na^+$ if $IE_1$ of $Na = 5.1 \, eV$?
Peptide synthesis inside a cell takes place in
Mutations can be induced with
Of the following which one is classified as polyester polymer?
Select the correct statement with respect to disease and immunization :