(Turning potential into
performance)
H.NO:17-1-81/C, Santosh nagar colony,
Saidabad, Hyderabad, Telangana, India
50005
Contact No.
9700413618,9032584808,9700220493
PHYSICS SECOND YEAR IMPORTANT QUESTIONS AND ANSWERS
SECTION-C
QUESTION
NUMBER 19
WAVES AND RAY OPTICS AND OPTICAL INSTRUMENT (8
MARKS)
1. Explain the formation of stationary wave in
stretched strings and hence deduce the law of transverse wave in stretched string?
2. Explain the formation of stationary wave in an
air column enclosed in open pipe. Drive the equations for the frequencies of
the harmonics produced?
3.Explain the formation of stationary wave in an air
column enclosed in closed pipe. Drive
the equations for the frequencies of the harmonics produced?
4. What is Doppler Effect? Obtain an expression for
the apparent frequency of sound heard when the source is in motion with respect
to an observer at rest?
5. What is Doppler’s shift? Obtain an expression of
the apparent frequency of sound heard when the observer is in motion with
respect to a source at rest?
6. a)Define Snell’s law, using a neat labelling
diagram derive an expression for the refractive index of the material of the
equilateral prism ?
b) A ray of light, after passing through the medium,
meets the surface separating the medium from air at an angle of 450
and is not just refracted. What is the refractive index of the medium?
7. Draw a neat labeled diagram of a compound
microscope and explain its working . Derive an expression for its
magnification.
8. Obtain an expression for the combination focal
length for two thin convex lenses kept in contact and hence obtain the
expression for the combined power of the combination of the lenses?
QUESTION
NUMBER 20
CURRENT
ELECTRICITY AND MOVING CHARGES AND MAGNETISM (8 MARKS)
9. Obtain the expression for the torque on a current
carrying loop placed in a uniform magnetic field, Describe the construction
working of a moving coil galvanometer?
10. Deduce an expression for the force on a current
carrying conductor placed on the magnetic field.Derive an expression for the
force per unit length between two parallel current carrying conductors.
11. Derive an
expression for the force per unit length between two parallel current carrying
conductor and hence define Ampere.
12. State Kirchhoff’s laws for electrical network.
Using these laws deduce the condition for balancing in a Wheatstone
bridge?
13. State the working principle of potentiometer
explain with the help of circuit diagram. How the emf of two primary cells are
compared by using the potentiometer?
14. State the working principle of potentiometer
explain with the of circuit diagram how the potentiometer is used to determine
the internal resistance of the given primary cell?
QUESTION
NUMBER 21
ATOMS
AND NUCLEI (8 MARKS)
15. Describe the Davisson and germen experiment what
did this experiment conclusively prove?
16. Discuss Bohr’s theory of spectrum of hydrogen
atom?
17. State postulates of Bohr’s theory of atomic
spectra. Hence obtain the expression for the radius of orbit and energy of
orbital energy electron in hydrogen atom?
18. Explain
the principal and working of a nuclear reactor with the help of a labelled
diagram?
19. What is
radioactivity? State the law of radioactive decay. Show that radioactive decay
is exponential in nature?
20. Define mass defect and binding energy. How does
binding energy per nucleon vary with mass number? What is its significance
21. Explain the source of stellar energy.Explain
carbon nitrogen cycle,Proton-proton cycle occurring in stars
22. What is rectifier? Explain the working of half
wave and full wave rectifiers with diagram?
SECTION-B
QUESTION NUMBER 11
RAY OPTICS AND OPTICAL
INSTRUMENTS (4M)
1. Define critical angle. Explain total internal
reflection using a neat diagram?
2.With a neat labelled diagram explain the formation
of image in a simple microscope?
3. Explain the formation of a rainbow 4. Explain the formation of
mirage
5. Why does the setting sun appears red
QUESTION NUMBER 12
WAVE OPTICS (4M)
1. Explain Doppler Effect in light. Distinguish
between red shift and blue shift?
2. Does the principle of conservation energy holds
for interference and diffraction phenomenon
3. Derive the expression for the intensity at a
point where interference of light occurs. Arrive at conditions for maximum and
zero intensity?
4. What is
total internal reflection? Explain the phenomenon using Huygens principle?
5.
QUESTION NUMBER 13
ELECTRICAL
CHARGES AND FIELDS [4M]
1. Derive an expression for the intensity of
electric field at a point on the axial line of a dipole?
2. Derive an
equation for the electric potential couple acting on an electric dipole in a
uniform
electric field?
3. Derive an
expression for the intensity of the electric field at a point on the equatorial
plane of an electric dipole?
4. State and
explain Coulomb’s inverse square law in electricity?
5. Derive an
expression for the electric potential due to point charge?
QUESTION
NUMBER 14
ELECTRIC
POTENTIAL AND CAPACITANCE.
1. Derive an expression for the capacitance of a
parallel plate capacitor?
2. Derive an expression for the electric potential
due to point charge.
3. Explain the behaviour of dielectric in an external
field.
CURRENT
ELECTRICITY
1 . State Kirchhoff’s laws for electrical network.
Using these laws deduce the condition for balancing in a Wheatstone
bridge?
2. State the
working principle of potentiometer explain with the help of circuit diagram.
How the emf of two primary cells are compared by using the potentiometer?
3. State the
working principle of potentiometer explain with the of circuit diagram how the
potentiometer is used to determine the internal resistance of the given primary
cell?
4. Three resistors each of resistance 10
are
connected in turn to obtain (i) Minimum resistance (ii) Maximum resistance
QUESTION
NUMBER 15
MOVING
CHARGES AND MAGNETISM
1. State and
explain Biot-Savart law?
2. Derive an
expression for the magnetic induction at the centre of a current carrying
circular coil using Biot-Savart law?
3. What are the basic component of cyclotron?
Mention it uses?
QUESTION
NUMBER 16
MAGNETISM
AND MATTER
1. Derive an expression for the axial field of a
solenoid of radius “r”, containing “n” turns per unit length and carrying
current “i”?
2. How do you distinguish between dia,para
ferromagnetism in matter.
ELECTROMAGNETIC
INDUCTION
1.Obtain an expression for the mutual inductance of
two long co-axial solenoids?
2. Obtain an expression for the emf induced across a
conductor which is moved in a uniform magnetic field which is perpendicular to
plane of motion.
3. Describe the ways in which eddy currents used to
advantages.
QUESTION
NUMBER 17
NUCLEI
1. Write a short note on the discovery of
neutron?
2. What are the properties of a neutron?
3. Define half-life period and decay constant for a
radioactive substance?
4. Define average life of a radioactive substance.
Obtain the relation between decay constant and average life.
5. Distinguish between nuclear fission and nuclear
fusion?
QUESTION
NUMBER 18
SEMI
CONDUCTOR
1. Describe how a semiconductor diode is used as a
half wave rectifier?
2. What is rectification? Explain the working of a
full wave rectifier?
3. Distinguish between zener break down and
avalanche breakdown?
4. Distinguish between half wave and full wave
rectifiers?
5. What are the limitations of Bohr’s theory of
hydrogen atom?
VSAQ
Chapter No: 2, 8, 9, 10, 11, 12, 15, 16 (All Answers)
ACADEMY
(Turning potential into performance)
H.NO:17-1-81/C, Santosh nagar colony,
Saidabad, Hyderabad, Telangana, India
500059
Contact No.
9700413618,9032584808,9700220493
CHEMISTRY SECOND YEAR IMPORTANT QUESTIONS AND ANSWERS
Chapters
name in question paper pattern.
Section- A
1)
Solutions.
6) d and f block elements.
2)
Electrochemistry.
7) Polymers
3)
General principles of metallurgy. 8) Bio molecules.
4) Group
– 15.
9) Chemistry in everyday life.
5) Group
– 16.
10) Organic chemistry.
Section – B
11)
Solid State.
12)
Solutions.
13)
Surface chemistry.
14)
General principles of metallurgy.
15) d
and f block elements.
16)
Polymers.
17) Bio
molecules.
18)
Organic chemistry.
Section – C
19)
Electrochemistry.
20) P-
block elements.
21) Organic chemistry.
SECTION-C
QUESTION NUMBER 19
ELECTRO CHEMISTRY(2
4M
= 8M)
1. State
and explain Kohlrausch’s law of independent migration of ions
2. What
are galvanic cells? Explain the working of a galvanic cell with a neat sketch
taking Daniel cell as example
3. What
is Electrolysis? Give faraday’s first law of electrolysis?
4. What
are primary and secondary batteries? Give one example for each
5. What
is metallic corrosion? Explain it with respect to iron corrosion
6.
Define and explain order of a reaction. How is it determined experimentally?
7.What
is molecularity of a reaction? How is it different from the order of a
reaction? Name one bimolecular and one trimolecular gaseous reaction
8. Describe
the salient features of the collision theory of a reaction rates of bimolecular reactions.
9. A
solution of Cu
is electrolyse for 10 minutes and the current
required is 1.5 amperes. Determine the mass of the copper.
10.
Explain the following terms with suitable examples
(a)
Average kinetic energy (b) Slow and
fast reaction (c) Order of a reaction
(d)
Molecularity of a reaction (e)
Activation energy of a reaction
QUESTION NUMBER 20
P- BLOCK ELEMENTS (8 MARKS)
Group 15 Elements
1. How
is ammonia manufactured by Haber’s process? Explain the reactions of ammonia
with (a) Zn
(b) Cu
(c) Ag
2.
How is nitric acid manufactured by Ostwald’s process? Explain the reactions of nitric
with
Group 17 Elements
1.
How is Chlorine prepared in the lab? How does it reacts (a)Iron (b)Hot Con.
(c)Acidified Fe
(d)Iodine (e)
(f)N
2.
How is Chlorine prepared by electrolytic method? Explain the reaction with NaoH
and N
under different conditions.
3.
How is
prepared? How does it reacts with water?
Explain it’s structure.
QUESTION NUMBER 21
ORGANIC CHEMISTRY(8 MARKS)
1.
With a suitable example write equations for the following
(i)
Kolbe’s reaction (ii) Reimer- Teimann
reaction (iii) Williamsons ether
synthesis.
2.
Write the equation for the preparation of phenol using benzene , Conc.
and NaOH.
3.
Describe the following (a) Acetylation
(b) Cannizaro reaction (c)
Crossed aldol condensation
(d)
Decarboxylation
4.
Explain the following named reaction (a) Sandmeyer reaction (b) Gatterman
reaction.
5.
Explain the acidic nature of phenol and compare with that of alcohol.
SECTION-B
QUESTION NUMBER 11
SOLID STATE(4M)
1. Derive
Bragg’s equation?
2. Write
a short notes on (a) Schottky defect
(b) Frenkel defect
3.
Describe the two main types of semiconductors and contrast their conduction
mechanism.
4.
Explain why ionic solids are hard and brittle.
5.
Calculate the efficiency of packing in case of (i) FCC (ii) BCC
6. Write
a short notes on (a) Interstitial sites (b) f- centers
QUESTION NUMBER 12
SOLUTIONS(4M)
1. State Raoults law? Calculate the vapour
pressure of a solution containing 9g of glucose in 162g of water at 293k the
vapour pressure of water at 293k is 17.535mm Hg?
2.
Define mole fraction. A solution of sucrose in water is labeled as 20% w/w.
What would be the mole fraction of each component in a solution.
3. State
and explain Raoult’s law.
4. What
is an ideal solution give an example.
5. A
solution of glucose in water is labeled as 10% w/w. What would be the molarity
of the solution.
6. What
is colligative property. Give three examples.
QUESTION NUMBER 13
SURFACE CHEMISTRY(4M)
1.
What is catalysis?
How is catalysis classified? Give two examples for each type of catalysis?
2. What
are the different types of adsorption? Give any four difference between
characteristics of different types.
3. What
is an emulsion? Explain the classification of emulsion with an example.
4. Name
the dispersed phase and dispersion medium in the following colloid systems (i)
fog (ii) smoke (iii) milk (iv) cloud (v) blood (vi) gold solution.
5. What
are colloidal solutions? How are they classified? Give example.
6. How
are colloids classified on the basis of interaction between dispersed phase and
dispersion medium
QUESTION NUMBER 14
GENERAL PRINCIPLES OF METALLURGY(4M)
1.
Explain the purification of forth floatation process.
2. Write
down the chemical reaction taking place in the extraction of zinc and zinc blende?
3.
Giving examples to
differentiate roasting and calcination?
4.
Outline the principles of refining of metals by the following methods (a)
Poling (b) Zone refining
(c) Electrolytic refining (d) Vapour phase refining ?
5. Write
down the chemical reactions taking place in different zones in the blast
furnace during the extraction of iron.
QUESTION
NUMBER (Save side )
P- BLOCK ELEMENTS (4 MARKS)
Group 16 Elements
1. Explain in details the manufacture of
sulphuric acid by contact process.
2. How is ozone prepared? How does it react
with the following PbS, KI, Hg ,Ag,
,
?
3.
Describe the structure of
and
.
4.
How does
reacts with the following
(a)
(b)
(c)
ions (d)
Group 17 Elements
1. Write
balance equation for the following
(a)
NaCl is heated with conc.
in the presence of Mn
.
(b)
Chlorine is passed into a solution of NaI in water.
2.
What are inter halogen compounds? Give some example to illustrate the definition
how are they classified?
Group 18 Elements
1.
How are Xe
and XeO
prepared?
2.
How are Xe
and Xe
prepared? Give their structure
3.
Explain the structures of (a) Xe
(b) Xeo
?
QUESTION NUMBER 15
d and f block elements and co-ordination
compound
1.
Explain Werner’s theory of coordination compounds with suitable example?
2.
Write the characteristic properties of transition elements.
3.
What is lanthanoid contraction? What are the consequences of lanthanoid
contraction
4.
Using IUPAC names write the systematic names of the following
5.
Give the geometrical shapes of the following complex entities?
6. Give
the oxidation numbers of the central atom metal in the following complex
entities?
[Ni(C
)],
,]
7.
Using IUPAC write the formula for the following
(i)
Tetra hydroxozincate(II) (ii) Hexa ammine cobalt(III) sulphate
(iii)
Potassium tetra choloropalladate(II) (iv) Potassium tri (oxalate) chromate
QUESTION NUMBER 16
POLYMERS (4 MARKS)
1.
What is polymerization? Give an example of polymerization reaction.
2.What
are synthetic rubbers? Explain the preparation and uses of (i) Neoprene (ii)
Buna-N (iii)
Buna-s
3. Write
the names and structures of the monomers used for getting the following
polymers (a)polyvinyl chloride (b)Teflon (c)Bakelite (d)polystyrene?
4. Write the names and structures of
the monomers of the following polymers
(a)Buna-s (b)Buna-N (c) Dacron
(d)Neoprene?
5. Write the names and structures of
polymers used for getting the following polymers (i) Teflon (ii) Bakelite
6. Explain the structures difference
between natural rubber and synthetic rubber?
7. Write a short note on sucrose?
8. Write short notes on (a) Analgesics
and (b) Food preservatives.
QUESTION NUMBER 17
BIO-MOLECULES (4 MARKS)
1.
Give the sources of the following vitamins and name the diseases
caused by their deficiency
(a)A
(b)D (c) E and (d)K?
2. What are enzymes? Give examples?
3. Write short notes on the functions of
different harmones in the body.
4. Write short notes on vitamins.
5. What are harmones? Give one example
for each.
(i) Steroid harmones (ii)Poly peptide harmones and (iii) Amino
acid derivatives.
QUESTION
NUMBER 18
ORGANIC CHEMISTRY(4 MARKS)
1.
Explain
and
reactions.
2.
Explain the following named reaction (a) Sandmeyer reaction (b) Gatterman
reaction.
3.
Explain the acidic nature of phenol and compare with that of alcohol.
4.
How do you prepare ethyl cyanide and ethyl iso cyanide from common alkylhalide.
5.Write
notes on the following (i)Artificial sweetening agents (ii) Food preservatives
(iii)Antioxidants in food.
6.Write
notes on the following(i) Soap (ii) Synthetic detergents
7.Define
the following reaction (i) Racemic mixture (ii) Retention of configuration
(iii) Enantiomers
8.What
happens when (i)n-butyl chloride is treated with alc. KOH (ii) Bromo benzene is
treated with Mg in presence of dry ether (iii) Methyl bromide is treated with
sodium in presence of dry ether.
VERY SHORT ANSWER QUESTIONS (2 MARKS)
1.What
makes a glass different from quartz.
2.What
is Schottky defect. 3.What is Frenkel defect. 4.State Raoult’s law.
5.State
Henry’s law. 6.Define osmotic pressure.
7.What
are Isotonic solutions. 8.What is
galvanic cell or a voltaic cell give one example.
9.What
is gibbs energy(G) related to the cell emf (E) mathematically/
10.Define
the speed or rate of a reaction.
11.Write
the equation useful to calculate half life (t1/2) value for zero and first
order reaction.
12.What
is the difference between physisorption and chemisorptions.
13.Name
the dispersed phase and dispersion medium in the following colloidal system
(i)fog (ii)Smoke (iii)Milk
14.What
are Miscelles? Give one example 15.What
is dialysis? How is dialysis can be made fast.
16.What
is Tyndall effect. 17.What is
Brownian effect or moment. 18.What
is coagulation.
19.What
is an emulsion? Give two examples.
20.How
emulsion are classified? Give one example for each type of emulsion.
21.Explain
poling. 22.Give the composition
of the following alloys Brass,Bronze and german silver.
23.Explain
the term Gangue and slang.
24.Write
any two ores with formulae of the following metals Aluminium,Zinc,Iron,Copper.
25.What
is matte? Give its composition? 26.What is blister
copper? Why is it so called?
27.What
is flux? Give an example?
28.Give
two uses of each of the following metals Zinc, Copper, Iron and Aluminium?
29.Nitrogen
molecule is highly stable why?
30.What is inert pair effect?
31.N
forms hydrogen bonds but P
does not Why?
32.What
is tailing of mercury? How is it removed?
33.Between
and
ozone is a better oxidizing agent why
34.Write
any two uses each for
&
35.How is Xe
prepared.
36.
How is XeO
prepared?
Describe its molecular shape.
37.
Scandium is a transition element? But Zinc is not why?
38.
Though Sc is a transition element it does not exhibit variable oxidation state
why?
39.
Why Zn2+ is diamagnetic where as mn2+ is paramagnetic?
40.
Aqueous Cu2+ ions are blue in color where as aqueous zn2+
ions are colorless? Why?
41.
Why is an alloys? Give example?
42.
What is lanthanoid contraction?
43.
What is mischmetall? Give its compoistin and uses?
44.
What is actinoid contraction?
45.
What is addition polymer? Give example?
46.
What is condensation polymer? Give example?
47.
What is copolymer? Give example?
48.
How can you differentiate between addition and condensation polymerization?
49.
What is Ziegler Natta catalyst?
50.
What is vulcanization of rubber?
51.
What is PHBV? How is it useful to man?
52.
What is a protein? Give an example?
53.
What are fibrous proteins? Give example?
54.
Why is glycogen? How is it different from starch?
55.
What is essential and non-essential amino acids? Give example for each?
56.Differentiate
between globular and fibrous proteins.
57.What
are antacids? Give example. 58.What are
antihistamines? Give example.
59.What
are tranquilizers? Give example. 60.What are analgesics? How
are they classified.
61.What
are antimicrobials? 62.What are antibiotic? Give example.
63.What
are artificial sweetening agents? Give example.
64.Why
do we require artificial sweetening agents?
65.What are food preservatives? Give example?
66.Writs
the structure of the following (i) 2 choloro-3-methylpentane.
(ii) 1-Bromo-4-sec-butyl-2-methylbenzene
67.Which
of the following has highest dipole moment CHC
, CHC
and CC
68.What
are ambident nucleophiles
69.What
type of isomerism is exhibited
by o, m and p-cholobenzes.
70.What
are enantiomers?
71.Explain
why ethylamine is soluble in water where as aniline is not soluble.
72.Give structures of ABC in the
reactions
----------A-----------B---------
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