List of top Questions asked in NEET (UG)- 1991

Oleum is
On hydrolysis of starch, we finally get
Resolution power is the ability to
RR (Red) Antirrhinum is crossed with white (WW) one. Offspring RW are pink. This is an example of
The hormone responsible for apical dominance is
If the number of turns per unit length of a coil of solenoid is doubled, the self-inductance of the solenoid will
The velocity of charge carriers of current (about 1 ampere) in a metal under normal conditions is of the order of
Faraday's laws are consequence of conservation of
A car moves a distance of 200 m. It covers the first half of the distance at speed 40 km/h and the second half of distance at speed v. The average speed is 48 km/h. The value of v is
Pick up the correct food chain
Correct order is
In a given atom no two electrons can have the same values of all the four quantum numbers. This is called
A body is executing simple harmonic motion. When the displacements from the mean position is $4 \,cm$ and $5 \,cm$, the corresponding velocities of the body is $10 \,cm/sec$ and $8\, cm/sec$. Then the time period of the body is
A heavy uniform chain lies on horizontal table top. If the coefficient of friction between the chain and the table surface is 0.25 s, then the maximum fraction of the length of the chain that can hang over one edge of the table is
A $5$ molar solution of $H_2SO_4$ is diluted from 1 litre to a volume of 10 litres, the normality of the solution will be
A closed organ pipe (closed at one end) is excited to support the third overtone. It is found that air in the pipe has
The order of filling of electrons in the orbitals of an atom will be
$P_2O_5$ is heated with water to give
The electronic configuration of Cu (at.no. = 29) is
Pure nitrogen is prepared in the laboratory by heating a mixture of
$PH_4I + NaOH$ forms
The transition elements have a general electronic configuration.
The relative lowering of the vapour pressure is equal to the ratio between the number of