List of top Questions asked in NEET (UG)- 2001

In which of the following plant sunken stomata are found?

What is the best pH of the soil for cultivation of plants

Enzyme first used for nitrogen fixation

When water moves through a semi permeable membrane then which of the following pressure develops?

Roots of which plant contains a red pigment which have affinity for oxygen

Which pair is wrong

What is true for cyanobacteria

Proteinaceous pigment which control the activities concerned with light

Triticale is obtained by crossing wheat with

In grasses what happens in micro spore mother cell for the formation of mature pollen grains

The dimensions of Planck constant equals to that of

A black body has wavelength $\lambda_m$ corresponding to maximum energy at 2000 K. Its wavelength corresponding to maximum energy at 3000 K will be:

Frequency of an allele in an isolated population may change due to

An electron having mass m and kinetic energy E enter in uniform magnetic field B perpendicularly, then its frequency will be

In preparation of alkene from alcohol using $ Al_2 O_3$, which is effective factor?

Interferons are synthesized in response to

Darwin's theory of pangenesis shows similarity with theory of inheritance of acquired characters then what shall be correct according to it

At the time of organogenesis genes regulate the process at different levels and at different time due to

An organic compound $A(C_4 H_9 C1)$ on reaction with Na/diethyl ether gives a hydrocarbon which on monochlorination gives only one chloro derivative, then A is

Maximum number of bases in plasmids discovered so far

A compound of molecular formula $C_7H_{16}$ shows optical isomerism, compound will be

Characteristics character of human cornea

If the energy of a hydrogen atom in nth orbit is $E_n$, then energy in the nth orbit of a singly ionized helium atom will be

A cylindrical rod having temperature T1 and T2 at its end. The rate of flow of heat Q1 cal/sec. If all the linear dimension are doubled keeping temperature remain const. then rate of flow of heat Q2 will be

For the reaction, $2N_{2}O_{5} \to 4NO_{2} + O_{2}$ rate and rate constant are $1.02 \times 10^{-4}\,mol\, L^{-1} s^{-1}$ and $3.4 \times 10^{-5} s^{-1}$ respectively. The concentration of $N_{2}O_{5}$ in mol $L^{-1}$ will be