PHYSICAL SCIENCES  QUESTIONS & ANSWERS 

 PHYSICS 1  MARK QUESTIONS 
1.	What is the principle of screw gauge?
2.	What is least count?
3.	What is pitch of the screw?
4.	State hook's law?
5.	Define: A) time of ascent b) Time of descent C) Time of flight 
6.	A ball is thrown up and attains a maximum height of 80 m Find a its initial velocity.
7.	Define a) angular displacement b) angular velocity
8.	What is banking angle?
9.	What is principle of launching satellite into an orbit?
10.	Define a) periodic motion b) Oscillatory motion
11.	What is a spectrum?
12.	Define a) Natural vibration b) Forced vibration C) damped vibration
13.	What is resonating air column?
14.	What are nodes and antinodes?
15.	Define a) Visual photometry b) lumen
16.	Expand LASER
17.	What is interference?
18.	What is the principle of super position?
19.	What is wave front? What are wave lets?
20.	Define a) pole strength b) Magnetic permeability c) Magnetic flux
21.	What are neutral points?
22.	Define a) Relative Permeability b) absolute Permeability
23.	Define a) Electric current b) ampere c) volt d) emf of a cell e) simple circuit.
24.	State ohm's law
25.	Define electric resistance of a conductor what are it units?
26.	Define specific resistance of a conductor what are its units?
27.	State Joule's law?
28.	Define a) watt hour b) kilowatt hour 
29.	State Ampere's right hand rule.
30.	What is an electric motor?
31.	What is electromagnetic induction?
32.	State Lenz's law
33.	What is a Dynamo?
34.	What is a transformer?
35.	What is self inductance and mutual inductance?
36.	Define a) atomic number b) mass number c) amu
37.	What is an atomic model?
38.	What are isotopes give examples?
39.	What are isobars give examples?
40.	What are isotones give examples?
41.	What is function of moderator in nuclear reactor?
42.	What is energy band?
43.	What is doping?
44.	What is hole current?
45.	What are software and hardware of a computer?
46.	Define a) I.C b) BINARY SYSTEM c) BCD CODE 
47.	Define a) BIT b) BYTE c) WORD

PHYSICS 2  MARKS QUESTIONS

1.	What is zero error? How are positive and negative zero errors determined?
2.	What is Acceleration due to gravity? What are the factors influencing it?
3.	Differentiate between mass and weight?
4.	Distinguish between heliocentric and geocentric theories
5.	Show that time of ascent = time of descent.
6.	what is a centrifuge. Explain its working.
7.	 Distinguish between inertial and non-inertial frames of reference.
8.	Distinguish between rotatory and circular motion.
9. 	What is necessity of banking of roads?
10.	What is SHM? what are its Characteristics?
11.	What is electro magnetic radiation? What are the common features among all em radiations?
12.	When do we get constructive and destructive super position of waves/
13.	State and explain HUYGENE'S principle 
14.	What are applications of laser in medicine and industries?
15.	 What are Special properties of laser?
16.	 What are the Basic principles involved in working of laser?
17.	What is population inversion and pumping/
18.	Define magnetic moment?
19.	Define intensity of magnetic field and magnetic susceptibility.
20.	 State and explain inverse square law of magnetism
21.	What are magnetic and non-magnetic substances?
22.        Compare the values of magnetic susceptibility and relative permeability of para, dia and ferro magnetic                                                                  substances

23.	What are the failures of EWING'S molecular theory?
24.	What is magnetic saturation?
25.	What are ohmic and non-ohmic conductors?
26.	State law's of resistance?
27.	State FARADAY'S first and second laws of electrolysis?
28.	State FLEMING'S left and right hand rules?
29.	Distinguish between step up and step down transformers?
30.	Define a) mass defect b) Binding energy c) Electron volt
31.	Define radio activity and radio active transformation.
32.	State law of radio active disintegration.
33. 	Define half life period?
34. 	What is chain reaction and how it is controlled.
35.	Define artificial transmutation.
36.	Define artificial radio activity
37.	What are the uses of radio isotopes?
38.	Define nuclear fusion and nuclear fission.
39.	What is radio active dating explains?
40.	Explain how substances are divided depending on electrical conductivity.
41.	What is a semi conductor? What are types of semi conductors explain?
42.	What is P - N junction? How it is formed?
43.	What is P - N junction Diode?
44.	What are forward and reverse bias conditions of diode?
45.	 What is junction transistor? What are its types?
46.	What is scanning explain?
47.	What is modulation and demodulation?
48.	Distinguish between machine language and high-level language?

PHYSICS 4 MARKS QUESTIONS.

1.	Give the description of screw gauge?
2.	How do you determine the diameter of a wire using screw gauge?
3. 	Give relation between G & g 
4.	Obtain the formula for maximum height reached by a body when it is projected with some initial velocity.
5.	Derive the formula for the velocity of a body on reaching the ground when it is dropped from a height 'h'?
6.	What is difference between centripetal and centrifugal forces?
7.	Explain the working of laundry drier?
8.	What is banking angle? Derive tan θ = v2/rg
9.	Explain the phenomenon of resonance
10.	Give examples of resonance phenomenon observed in day - today life?
11.	Distinguish between progressive and stationary waves
12.	Describe a method to find velocity of sound in air/
13.	Give the comparison between NEWTON'S corpuscular theory and HUYGEN'S wave theory?
14.	Write the applications of lasers in science and technology?
15.	Describe ripple tank. How do you demonstrate reflection and refraction of water waves?
16.       What is diffraction? Explain the diffraction of water waves in a ripple tank a) straight edge b) at an aperture
17.	What are the main parts of laser?
18.	Distinguish between para, ferro and diamagnetic substances?
19.	Describe an experiment to verify ohm's law?
20.	When do we say that resistances are connected in series and in parallel?
21.	Derive R= R1 +R2+R3 
22.	Derive 1/R = 1/R1+1/R2+1/R3 
23.	Derive the expression for the heat developed Q=I2 Rt/j
24.	Describe an experiment to verify FARADAY'S first law of electrolysis
25.	Describe an experiment to verify FARADAY'S second law of electrolysis
26.	Explain the construction and working of electric motor with neat sketch?
27.	Explain the construction and working of A.C dynamo with neat sketch?
28.	Explain the construction and working of transformer with neat sketch?
29.	Write the properties of    α, β, γ radiations?
30.	Explain the process of α-decay and β-decay with examples?
31.	What is the principle of nuclear reactor? How is a chain reaction controlled in it explain its working?
32.	Explain the formation of P- type and N-type semi conductors?
33.	State the properties and uses of P-N diode              
34.	Explain the formation of transistor?
35.	State the properties and uses of P-N transistor?

PHYSICS 5 MARKS QUESTIONS (Diagrams)

1.	Draw the neat sketch of screw gauge.
2.	Draw the neat sketch showing various regions of em - spectrum and their wave lengths
3.	Draw the shape of electromagnetic wave.
4.	Draw the neat sketch of stationary wave
5.	Draw the neat sketch of first and second modes of resonating air columns.
6.	Draw the neat sketch of ripple tank.
7.	Draw the neat sketch of magnetic lines of force around a bar magnet when north pole of a bar magnet facing North Pole of the earth
8.	Draw the neat sketch of magnetic lines of force around a bar magnet when south pole of a bar magnet facing North Pole of the earth 
9.	Draw the neat sketch of electric motor 
10 	Draw the neat sketch of A.C. Dynamo
11.	Draw the neat sketch of transformer
12.	Draw the neat sketch of nuclear reactor
13.	Draw the neat sketch of P-N-P and N-P-N transistors
14.	Draw the neat sketch of P-N Diode

PHYSICS PROBLEMS

1.	A Ball is thrown up and Attains a maximum height of 80m find its initial Velocity 
2.	Find the Velocity of a body before it reaching the earth when it is dropped from a height of 40m 
3.	Find the Velocity of sound in air when the length of air column is 20cm and the frequency is 512Hz
4.	An Electron installation consists of 100 lamps each drawing 0.2A at 220V supply find the cost of working of 
	the installation for a month of 30 days at 5 hours a day, if energy is charged at a right of Rs:2per unit.
5.	Calculate the equivalent resistance of two resistors of 100 Ώ.and 1Ώ connected in parallel
6.	The resistance of manganin wire of 1sq.mm cross sectional area is 15Ώ.Find the resistance of manganin wire 
	of same length but of cross section of 3sq.mm.
7.	Calculate the mass defect and binding energy of 42He whose nuclear mass is 15.995amu.

CHEMISTRY
1  MARK QUESTIONS
1.	What is stationary orbit?
2.	What are degenerate orbital?
3.	Define a) atomic orbital  b) nodal plane
4.	What is Electronic Configuration?
5.	Define octet configuration?
6.	Name the molecules having pyramidal shape?
7.	What is the shape of CO2?
8.	Give two examples of Doberiener Triads?
9.	State Mendeleef's Periodic Law?
10.	What are Inert Gases write their general electronic configuration?
11.	Define atomic radius write its units?
12.	Which group of elements has highest electro positive character?
13.	Which group of element can be used as oxidizing and reducing agents?
14.	Name two ores of Mg?
15.	How many water molecules are present in Epsom salt?
16.	Write the formulae for alkaline earth metals?
17.	Write the general Electronic Configuration of alkaline earth metals?
18.	Define solute, Solvent and solution?
19.	Define Solubility and Concentration?
20.	Define pH?
21.	What is Ionic Product of Water? Give its value at 25oc.
22.	What is allotropy? Name three important allotropes of carbon?
23.	What is Dry Ice?
24.	What is Catenation and Polymerization?
25.	What is Alkyl group and Functional group?
26.	Define a) Carbohydrates b) Califoric Value
27.	What are monosaccharide, polysaccharides and oligosaccharides?
28.	What is defecation?
29.	What is sulphitation?
30.	What is Carbonation?
31.	What is Press mud? Mention its use.
32.	What is Molasses?
33.	What is Baggase? How it is useful?
34.	What is Clarified Juice?
35.	What is Wash?
36.	What is Soap?
37.	What is Detergent?
38.	What is Saponification?
39.	Differentiate between oil and fat?
40.	What is plastic?
41.	What is Dye?
42.	What is cracking?
43.	What are Primary Nutrients?
44.	Define Adhesive?
45.	What are Pharmaceuticals?

2 MARKS QUESTIONS
1.	Define a) Atomic radius b) Electron Affinity  c) Ionization Energy
2.	Explain why electrons enter into 4s orbital but not 3d orbital after filling 3p?
3.	Explain How Sigma and Pi Bonds are formed?
4.	What is the shape of PCl5 Draw it?
5.	Define a) Electro negativity b) Electropositive Character with units
6.	What is NEWLAND'S Concept of octaves?
7.	Why NaCl and KCl are added to anhydrous MgCl2?
8.	What is the Electrode Reaction during Extraction of Mg?
9.	Define Weight Percentage and Volume Percentage?
10.	What are Strong Electrolytes, Weak Electrolytes and non - electrolytes?
11.	Define Heat of Neutralization?
12.	What are the limitations of Arrhenius theory of acids and bases?
13.	Write the chemical properties of acids with equations?
14.	Write the Chemical properties of bases with equations?
15.	Compare the structures of diamond and Graphite?
16.	Write the structure of benzene?
17.	Differentiate between alkanes, alkenes and alkynes?
18.	What is ment by fermentation?
19.	What is rectified spirit?
20.	What is absolute alcohol?
21.	What is denatured spirit?
22.	What are the uses and evil effects of alcohol?
23.	How is cane juice purified?
24.	Write the uses of hydrogenation of oils?
25.	What is the use of adding cullet to the raw materials of glass?
26.	Name two auxochromes and chomophores?
27.	What are cosmetics? Give Examples?
28.	What is annealing?
29.	What are Fertilizers?
30.	Write a short notes on a) Synthetic Adhesives - uses b) Pottery and earthenware 
31.	What are the uses of cold cream?

4  MARKS QUESTIONS

1.	Write the important postulates and defects of BOHR'S theory?
2.	Write the important postulates and defects of RUTHER FORD'S theory?
3.	State and Explain the AUFBAU principle with an example?
4.	State and Explain the HUND'S rule with one example?
5.	Explain quantum numbers?
6.	Explain the formation of Double Bond with Example?
7.	Explain the formation of Triple Bond with Example?
8.	Explain the formation of Co-Ordinate Covalent Bond?
9.	How does the following properties vary in a period and in a group A) Ionization energy  B) Electro negativity  C) Oxidizing Property  D) Reducing Property
10.	Write the reactions of group IIA Elements with a) Oxygen B) Hydrogen C) Chlorine D) Water.
11.	Describe the method of Extracting Mg from its ore?
12.	Define Molarity and Mole fraction and give their equations?
13.	How do you prepare 0.1M Na2 CO3 Solution?
14.	Write ARRHENIUS theory of acids and bases what are its limitations?
15.	Define Strong acid, Strong base, Weak Acid and Weak base with examples?
16.	Write the addition reactions of alkenes?
17.	How do you prepare TOLLEN'S reagent and BENDICT'S reagent?
18.	How is sugar prepared from sugar cane?
19.	How is alcohol prepared industrially?
20.	How soap is industrially prepared?
21.	How is Detergent industrially prepared?
22.	How do you test the quality of soap?
23.	What is a drug? What is the Characteristics of Ideal drug?
24.	What are the Characteristics of good quality face powder?
25.	Explain the refining of petroleum?

5  MARKS QUESTIONS - Diagrams

1.	Draw the shapes of  S,P and D orbital 
2.	Draw moeller diagram.
3.	Draw the neat sketch of triple bond.
4.	Draw the neat sketch of extracting Mg from its ore.
5.	Draw the neat sketch of diamond and graphite.
6.	Draw the neat sketch of preparation of sugar.
7.	Draw the neat sketch of preparation of alcohol.
8.	Draw the neat sketch of peptide bond ,PCl5 , PCl3, NH3, H2O,CO2
9.	Draw the neat sketch of asprin and paracetmol.
10.	Draw the neat sketch of extraction of petroleum and aniline yellow dye.

PROBLEMS

1.	Calculate number of moles of oxalic acid present in 400ml of its 0.025M solution.
2.	20ml of alcohol is mixed with 160ml of water. Find out the V. % and W% of the solution.
3.	6grams of urea is present in 200ml of its aqueous solution calculate the Molarity of the solution (GMW=60)
4.	A gaseous mixture contains 4gm of H2 (GMW=2) and 168 gm of N2 (GMW=28) Calculate the mole fractions of H2 & N2 
5.	Calculate the pH of 0.001M HCl.