List of top Questions asked in NEET (UG)

A block of mass $m$ is placed on a smooth wedge of inclination $\theta$. The whole system is accelerated horizontally so that the block does not slip on the wedge. The force exerted by the wedge on the block will be ($g$ is acceleration due to gravity)

In a plant, red fruit (R) is dominant over yellow fruit (r) and tallness (T) is dominant over shortness (t). If a plant with RRTt genotype is crossed with a plant that is rrtt,

Two springs of spring constants $ k_1 $ and $ k_2$ are joined in series. The effective spring constant of the combination is given by

Which of the following forms cationic micelles above certain concentration?

A galvanometer of $50$ ohm resistance has $25$ divisions. $A$ current of $ 4\times 10^{-4}$ ampere gives a deflection of one division. To convert this galvanometer into a voltmeter having a range of $25$ volts, it should be connected with a resistance of

Which of the following is least reactive in a nucleophilic substitution reaction?

$CN^-$ is strong field ligand. This is due to the fact that

The rate of first order reaction is $1.5 \times 10^{-2}$ mol $L^{-1} \, min^{-1}$ at 0.5 M concentration of the reactant. The half-life of the reaction is

The rapid change of $pH$ near the stoichiometric point of an acid base titration is the basis of indicator detection. $pH$ of the solution is related to ratio of the concentrations of the conjugate acid ($HIn$) and base $ (In^-) $ forms of the indicator given by the expression

In $BrF_3$ molecule, the lone pairs occupy equatorial positions to minimise

An electric dipole has the magnitude of its charge as $q$ and its dipole moment is $p$. It is placed in a uniform electric field $E$. If its dipole moment is along the direction of the field, the force on it and its potential energy are respectively

The richest sources of vitamin B are

Consider a system of two particles having masses $m_1$ and $m_2$. If the particle of mass $m_1$ is pushed towards the mass centre of particles through a distance '$d$', by what distance would be particle of mass $m_2$ move so as to keep the mass centre of particles at the original position ?

A mass of $0.5 \,kg$ moving with a speed of $1.5 \,m/s$ on a horizontal smooth surface, collides with a nearly weightless spring of force constant $k = 50 \,N/m$. The maximum compression of the spring would be

$A n-p-n$ transistor conducts when

According to Curie's law, the magnetic susceptibility of a substance at an absolute temperature $T$ is proportional to

Which one of the following orders of acidic strength is correct ?

The ions $O ^{2-}, F ^{-}, Na ^{+}, Mg ^{2+}$ and $Al ^{3+}$ are isoelecronic. Their ionic radii show :

Diffuse porous wood is characteristics of those Plants which are growing in

During translation initiation in prokaryotes, a GTP molecule is needed in

Cellular totipotency is demonstrated by

Chlorenchyma found in

Degeneration of a genetic code is attributed to the

The molarity of pure water is:

Maximum application of animal cell culture technology today is in the production of