New Concepts/Shortcuts 11

Question 1

bandwidth formula for AC

Answer 1

Question 1

what would be the smallest circle passing through the intersection of two circles?

Answer 1

the circle passing thought PQ is the smallest circle

and it will also bisect the circle

Question 2

standard electrode potential formula

Answer 2

Question 3

what act anode ? the one above H or below H?

Answer 3

the one below H in an order of decreasing redution potential

Question 4

delta G formula for electrochemistry

Answer 4

Question 5

nernst equation

Answer 5

0.059 (298K)

Question 6

equivalent moles of metal depostied formula

Answer 6

Q is the charge passed

Question 7

cell constant formula

Answer 7

l/A

Question 8

whats conductivity and conductance

Answer 8

Question 9

conductivity and conductance and cell constant relation

Answer 9

Question 10

molar conductance formula if the given conductivity is given Scm^-1

Answer 10

Question 11

molar conductance formula if the given conductivity is given Sm^-1

Answer 11

Question 12

Debye Huckle Onsagar equation

Answer 12

Question 13

kohlrausch’s law

Answer 13

Question 14

alpha relation with limiting molar conductivity and molar conductivity

Answer 14

Question 15

hydrogen orbits energy in eV

Answer 15

Question 16

Dumas method shortcut for finding the %age of N

Answer 16

the middle line is the standard line representing the standard values

the final %age of N will have the x/y depending on its position with respect to the line

Question 17

Dumas method shortcut for finding the formula of the compound

Answer 17

Question 18

flame test colors of metals 
Sr
Li
Ca
Ba
K
Cu
Na
Ni

Answer 18

Question 19

shortcut for finding optical isomerism in CC(if CN=4)

Answer 19

Mabcd will show optical isomerism

Question 20

shortcut for finding optical isomerism in CC(if CN=6)

Answer 20

only these kind of compounds can show optical isomerism

its 
1 1 1 1 1 1 
2 1 1 1 1
3 1 1 1
2 2 1 1 
2 2 2

Question 21

can bi dentate ligand show optical isomerism in CC if CN=6

Answer 21

yes if 1/2 bidentate is there, it shows optical isomerism

and it should be cis

Question 22

magnification in mirror formula

Answer 22

Question 23

apparent depth formula

Answer 23

Question 24

lateral displacement formula for slab of a thickness t

Answer 24

Question 25

lens maker’s formula

Answer 25

Question 26

magnification formula in lens

Answer 26

Question 27

combination of lens and mirror

Answer 27

Question 28

critical angle formula

Answer 28

Question 29

angle of deviation
minimum deviation
refractive index formula

For prism

Answer 29

Question 29

condition for deviation from 2 prism without dispersion

Answer 29

Question 30

dispersive power and dispersion angle formula

Answer 30

Question 31

shortcut for MOT

Answer 31

fill the orbitals from top left
then top right
then bottom left
then bottom right

Question 32

shortcut for writing electronic configuration of any element

Answer 32

write the noble gas numbers

see the difference of the electrons from the noble gas number and then that difference will be the number of electrons to fill in and we will also find the period number

then the number of orbitals to be filled in a nth period is given by:- ns np (n-1)p (n-2)p

firstly write the ns then write the numbers in ascending order from the lowest to the highest and then fill in that order only

Question 33

NaBH4 is the reagent

Answer 33

Question 34

Answer 34

Question 34

Answer 34

Question 34

Answer 34

Question 35

phenol with HNO3 gives what major compound?

Answer 35

becuase of H bonding

Question 36

comparision of these sugars with OG sugar

aspartame
saccharin
sucralose
alitame

Answer 36

aspartame: 100 times
saccharin: 550 times
sucralose: 600 times
alitame: 2000 times