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

Which one of the following is not a part of a renal pyramid?

The half life of a radioactive isotope $X$ is $50$ years. It decays to another element $Y$ which is stable. The two elements $X$ and $Y$ were found to be in the ratio of $1 : 15$ in a sample of a given rock. The age of the rock was estimated to be

A thermocouple of negligible resistance produces an e.m.f. of $ 40\, \mu V/^{\circ}C$ in the linear range of temperature. A galvanometer of resistance $10$ ohm whose sensitivity is $1 \, \mu A/division$, is employed with the thermocouple. The smallest value of temperature difference that can be detected by the system will be

If power dissipated in the $9\, \Omega$ resistor in the circuit shown is $36$ watt, the potential difference across the $2\, \Omega$ resistor is

Ethanol is commercially produced through a particular species of

Mutations can be induced with

What happens during fertilization in humans after many sperms reach close to the ovum

The correct order of increasing bond length of $ C - H, C - O, C - C$ and $ C = C $ is

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

The pairs of species of oxygen and their magnetic behaviours are noted below. Which of the following presents the correct description ?

Which one of the following is employed as Antihistamine?

Acidified $K_2Cr_2O_7 $ solution turns green when $Na_2SO_3 $ is added to it. This is due to the formation of

A boy standing at the top of a tower of $20\,m$ height drops a stone. Assuming $g = 10\, ms^{-2},$ the velocity with which it hits the ground is

Select the correct statement with respect to disease and immunization :

Which one of the following acts as a physiological barrier to the entry of microorganisms in human body ?

A current of $2\,A$ flows through a $2\, \Omega$ resistor when connected across a battery. The same battery supplies a current of $0.5\, A$ when connected across a $9\, \Omega$ resistor. The internal resistance of the battery is

Which one of the following statements is not true regarding $(+)$ lactose?

Which of the following is not a fat soluble vitamin ?

Which of the following carbonyls will have the strongest C-O bond ?

The rate of the reaction $ {2 N_2 O_5 -> 4 NO_2 + O_2}$ can be written in three ways: $\frac{-d [N_2 O_5]}{dt} = k [N_2 O_5]$ $\frac{d[NO_2]}{dt} = k' [N_2 O_5]$ $\frac{d[O_2]}{dt} = k" [N_2 O_5]$ The relationship between k and k' and between k and k'' are-

The freezing point depression constant for water is $-1.86^{\circ} Cm^{-1}$. If $5.00 \,g$ $Na_2SO_4$ is dissolved in $45.0\,g$ $H_2O$, the freezing point is changed by $- 3.82^{\circ} C$. Calculate the Van't Hoff factor for $Na_2SO_4$.

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-

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?

The total number of atomic orbitals in fourth energy level of an atom is :