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questions
List of practice Questions
What is the order of forbidden energy gap for semiconductors ?
Physics
Semiconductor electronics: materials, devices and simple circuits
What is the order of stability of
$N_2$
and its ions?
Chemistry
Chemical bonding and molecular structure
What is the name of the complex
$[Al(OH)_2(H_2O)_4]SO_4$
?
Chemistry
coordination compounds
What is the net charge on ferrous ion?
Chemistry
Redox reactions
What is the number of ways of choosing
$4$
cards from a pack of
$52$
playing cards? In how many of these, four cards are of the same suit?
Mathematics
permutations and combinations
What is the name and symbol of the element with atomic number
$112$
?
Chemistry
Classification of elements and periodicity in properties
What is the most likely configuration of the cobalt d-electrons for the species,
$[CoCl_6]^{3-}$
and
$[Co(NO_2)_6]^{3-}$
?
Chemistry
coordination compounds
What is the IUPAC name of
$Na_2[Fe(CN)_5NO]$
?
Chemistry
coordination compounds
What is the length of the perpendicular from the origin to the plane
$ax + by + \sqrt{2ab} z = 1$
?
Mathematics
Three Dimensional Geometry
What is the full form of IUDs?
Biology
Reproductive Health – Problems And Strategies
What is the heat of solution of sodium chloride from following data? Hydration energy of
$Na^+ = - 389.4\, kJ\, mol^{-1}$
Hydration energy of
$Cl^- = - 382.3\, kJ\, mol^{-1}$
Lattice energy of
$NaCl = - 776 \,kJ \,mol^{-1}$
Chemistry
GROUP 1 ELEMENTS
What is the formal charge on carbon atom in the following two structure:
Chemistry
Chemical bonding and molecular structure
What is the fractional error in
$g$
calculated from
$T=2\pi\sqrt{\frac{l}{g}}$
if it is given that fractional errors in
$T$
and
$l$
are
$\pm x$
and
$\pm y$
, respectively?
Physics
Units and measurement
What is the fate of primary xylem in a dicot root showing extensive secondary growth?
Biology
Anatomy of Flowering Plants
What is the electrode potential of
$Fe^{3+}/ Fe$
electrode in which concentration of
$Fe^{3+}$
ions is 0.1 M. Given
$E^\circ Fe^{3+}/Fe = + 0.771 V$
Chemistry
Electrochemistry
What is the equivalent definition of the function given by $f(X) = \begin{cases} 2x , & x \ge 0 \\ 0,& x < 0 \end{cases} $ ?
Mathematics
Relations and functions
What is the effect of Frenkel defect on the density of ionic solids?
Chemistry
The solid state
What is the correct order of decreasing bond angle?
Chemistry
Chemical bonding and molecular structure
What is the correct value of Bohr magneton?
Physics
Moving charges and magnetism
What is the decreasing order of strength of the bases?
$OH^{-},NH_2^-,H-C \equiv C^- \, and \, CH_3-CH_2^- $
Chemistry
reaction mechanism
What is the discovery of CV, Raman
Physics
Units and measurement
What is the basic formula for starch?
Chemistry
Biomolecules
What is the co-ordination number of
$Cl^-$
in
$NaCl$
crystal ?
Chemistry
The solid state
What is the coordination number of sodium in
$Na_2O$
?
Chemistry
The solid state
What is the area of the triangle whose vertices are (0,0,0) (3, 4, 0) and (3, 4, 6) ?
Mathematics
Straight lines
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