List of top Questions asked in NEET (UG)

Which of the following is cationic detergent?

Which of the following is a basic amino acid ?

Identify the correct statements from the following: 
(a) \(CO_2(g)\) is used as refrigerant for ice-cream and frozen food. 
(b) The structure of \(C_{60}\) contains twelve six carbon rings and twenty-five carbon rings. 
(c) \(ZSM-5\), a type of zeolite, is used to convert alcohols into gasoline. 
(d) \(CO\) is colorless and odourless gas.

An element has a body centered cubic (bcc) structure with a cell edge of 288 pm. The atomic radiusis:

A tertiary butyl carbocation is more stable than a secondary butyl carbocation because of which of the following ?

Which of the following is a natural polymer?

Anisole on cleavage with HI gives :

HCl was passed through a solution of $CaCl_2$,$MgCl_2$ and $NaCl$. Which of the following compound(s) crystallise(s)?

The half-life for a zero order reaction having $0.02\, M$ initial concentration of reactant is $100\, s$. The rate constant (in $mol \,L^{-1} s^{-1})$ for the reaction is

The rate constant for a first order reaction is $4.606 \times 10^{-3} s^{-1}$. The time required to reduce $2.0\,g$ of the reactant to $0.2\,g$ is :

A long solenoid of $50\,cm$ length having $100\,turns$ carries a current of $2.5\,A$. The magnetic field at the centre of the solenoid is : $(\mu_o = 4\pi \times 10^{-7} T\,m\,A^{-1})$

A series LCR circuit is connected to an ac voltage source. When L is removed from the circuit, the phase difference between current and voltage is $\frac {\pi}{3}$ . If instead C is removed from the circuit, the phase difference is again $\frac {\pi}{3}$ between current and voltage. The power factor of the circuit is :

Identify the function which represents a periodic motion

The color code of a resistance is given below : The values of resistance and tolerance, respectively, are :

The correct option for free expansion of an ideal gas under adiabatic condition is :

The number of protons, neutrons and electrons in $^{175}_{71} Lu,$ respectively , are :

The ratio of contributions made by the electric field and magnetic field components to the intensity of an electromagnetic wave is : (c = speed of electromagnetic waves)

Two particles of mass $5\,kg$ and $10\,kg$ respectively are attached to the two ends of a rigid rod of length 1m with negligible mass. The centre of mass of the system from the $5\,kg$ particle is nearly at a distance of :

When a uranium isotope $^{235}_92 U$ is bombarded with a neutron, it generates $^{89}_{36} Kr$, three neutrons and :

The solids which have negative temperature coefficient of resistance are :

A screw gauge has least count of 0.01 mm and there are 50 divisions in its circular scale. The pitch of the screw gauge is:

A spherical conductor of radius 10 cm has a charge of \(3.2 \times 10^{-7} C\) distributed uniformly. What is the magnitude of electric field at a point \(15\,cm\) from the centre of the sphere?
\((\frac {1}{4\pi \epsilon_o} = 9 \times 10^9 Nm^2/C^2)\)

The increase in the width of the depletion region in a p-n junction diode is due to :

An electron is accelerated from rest through a potential difference of V volt. If the de Broglie wavelength of the electron is $1.227 \times 10^{-2}nm$, the potential difference is :