List of top Questions asked in NEET (UG)- 1990

The alveolar epithelium in the lungs
The magnetic induction at a point P which is at the distance of 4 cm from a long current carrying wire is $ 10^{-3}$ T. The field of induction at a distance 12 cm from the current will be
The main difference in Gram (+)ve and Gram (-)ve bacteria resides in their
The molecular weight of $O_2$ and $SO_2$ are 32 and 64 respectively. At $15^{\circ}C$ and 150 mmHg pressure, 1L of $O_2$ contains -N - molecules. The number of molecules in 2L of $SO_2$ under the same conditions of temperature and pressure will be
The momentum of a photon of an electromagnetic radiation is $3.3 \times 10^{-29}\, kg\, ms^{-1}.$ What is the frequency of the associated waves ? $[h=6.6 \times 10^{-34}\, Js\, ;\, c = 3 \times 10^8\, ms^{-1}]$
The number of gram molecules of oxygen in $6.02 \times 10^{24}$ CO molecules is
Two identical batteries each of e.m.f 2 V and internal resistance $1\, \Omega$ are available to produce heat in an external resitance by passing a current through it. The maximum power that can be developed across R using these batteries is

Vivipary is characteristic of

Which is true about Trypanosoma?
You are given several identical resistances each of value $R=10\, \Omega$ and each capable of carrying a maximum current of one ampere. It is required to make a suitable combination of these resistances of $5\, \Omega$ which can carry a current of 4 ampere. The minimum number of resistances of the type R that will be required for this job is
Which ones produce androgenic haploids in anther cultures?
Which one is a hereditary disease?
Which one belongs to monera?
Where do the casparian bands occur?
What is true about a monocot leaf?
Electron microscope has a high resolution power. This is due to
A radio transmitter operates at a frequency 880 kHz and a power of 10 kW. The number of photons emitted per second is
A taxon is
The ability of a substance to assume in two or more crystalline structures is called
Compared with the alkaline earth metals, the alkali metals exhibit
Collenchyma occurs in the stem and petioles of
Cork cambium and vascular cambium are
For union between stock and scion in grafting which one is the first to occur
NADP is reduced to NADPH in
Segregation of Mendelian factor (Aa) occurs during