List of top Questions asked in NEET (UG)- 2010

What is $ [H^+] $ in mol/L of a solution that is $0.20 \,M$ in $ CH_3COONa $ and $0.10 \,M$ in $ CH_3COOH $ ? $ (K_a\, \, for\, \, CH_3COOH = 1.8 \times 10^{-5}) $

Which one of the following is employed as a tranquilizer drug ?

When domestic sewage mixes with river water

Which of the following does not exihibit the phenomena of mutarotation?

Which one of the following statements about all the four of Spongilla, leech, dolphin and penguin is correct?

Which one of the following species does not exist under normal conditions?

Which one of the following is not used in organic farming ?

Which one of the following is the correct description of a certain part of a normal human skeleton?

Which one of following is used as vector for cloning genes into higher organisms ?

Which one is most reactive towards $S_N 1$ reaction?

Which of the following statements about primary amines is false ?

Which of the following statement is false for the properties of electromagnetic waves?

Among the following which one has the highest cation to anion size ratio?

The compound A on heating gives a colourless gas and a residue that is dissolved in water to obtain B. Excess of ${CO_2}$ is bubbled through aqueous solution of B, C is formed which is recovered in the solid form. Solid C on gentle heating gives back A. The compound A is -

Among the elements $Ca, Mg, P$ and $Cl$, the order of increasing atomic radii is -

The magnetic moment of a diamagnetic atom is

A beam of cathode rays is subjected to crossed electric $(E)$ and magnetic fields $(B)$. The fields are adjusted such that the beam is not deflected. The specific charge of the cathode rays is given by (Where $V$ is the potential difference between cathode and anode)

Select the correct statement regarding an improved variety of transgenic basmati rice i.e., golden rice.

A common emitter amplifier has a voltage gain of $50$ , an input impedance of $100 \Omega$ and an output impedance of $200 \Omega$ The power gain of the amplifier is

A square surface of side $L$ meter in the plane of the paper is placed in a uniform electric field $E(volt/m)$ acting along the same plane at an angle $q$ with the horizontal side of the square as shown in figure. The electric flux linked to the surface, in units of volt $m$ is

A student measures the distance traversed in free fall of a body, initially at rest, in a given time. He uses this data to estimate $g$, the acceleration due to gravity. If the maximum percentage errors in measurement of the distance and the time are $e_1 $ and $e_2$ respectively, the percentage error in the estimation of $g$ is

A vibration magnetometer placed in magnetic meridian has a small bar magnet. The magnet executes oscillations with a time period of $2$ sec in earth's horizontal magnetic field of $24$ microtesla. When a horizontal field of $18$ microtesla is produced opposite to the earth's field by placing a current carrying wire, the new time period of magnet will be

$AB$ crystallizes in a body centred cubic lattice with edge length 'a' equal to $387 \,pm$. The distance between two oppositely charged ions in the lattices is

Electromagnets are made of soft iron because soft iron has