List of practice Questions

Who is regarded as father of 'Plant Tissue Culture' (P. T. C.)?
The first androgenic haploid plant product by anther culture was from -
Plants having half the somatic chromosome number than found in normal individual are called -
The production of haploids by anther and pollen culture was first demonstrated by -
Plants cannot absorb molecular nitrogen from the atmosphere because
Inducing the formation of various vegetative organs from cells or tissues in plant tissue culture is called -

Match the LIST-I with LIST-II 

LIST-I BreedLIST-II Place of origin
A. DeoniI. Gujarat
B. KankrejII. Andhra Pradesh
C. OngoleIII. Rajasthan
D. RathiIV. Maharashtra


Choose the correct answer from the options given below:

On the basis of the given data, estimate the value of National Income (NNPFC):

S.No.ItemsAmount (in ₹ Crore)
(i)Household Consumption Expenditure1,800
(ii)Gross Business Fixed Capital Formation1,150
(iii)Gross Residential Construction Expenditure1,020
(iv)Government Final Consumption Expenditure2,170
(v)Excess of Imports over Exports720
(vi)Inventory Investments540
(vii)Gross Public Investments1,300
(viii)Net Indirect Taxes240
(ix)Net Factor Income from Abroad(-) 250
(x)Consumption of Fixed Capital440
The minimum number of identical bulbs of rating 4V, 6W, that can work safely with desired brightness, when connected in series with a 240V mains supply is:
If \( \sqrt{1 - x^2} + \sqrt{1 - y^2} = a(x - y) \), then prove that \( \frac{dy}{dx} = \frac{\sqrt{1 - y^2}}{\sqrt{1 - x^2}} \).
Why was the Silk Route considered a good example of vibrant pre-modern trade?
Atomic Force Microscopy monitors:
As the particle size reduces, the optical absorption spectra shifts towards:
Carbon nanotube shows magneto-resistive effects:
Lithography is:
Scanning Tunneling Microscopy is based on:
Which statement is true for Scanning Tunneling Microscopy:
Atomic Force Microscopy is a modified version of:
In which type of metals, there is overlapping of valence band with the conduction band?
The electronic contribution of specific heat of copper at 300K is:
(Given that the fermi energy of copper is 7.05eV, and it is assumed to be temperature independent)
The characteristic length of nano-materials is:
Surface area to volume ratio of materials:
Electronic magic numbers of atoms are:
A. 2
B. 15
C. 10
D. 18
Choose the correct answer from the options given below:
Which current does not contribute to a uniformly doped semiconductor:
For temperature greater than 0 K, the fermi level is the level where the probability of occupation of electrons is: