English 2013
English 2013
English 2013
+
: + L - O^ O + + . +
GOVERNMENT BOYS SECONDARY SCHOOL NO-1
NAZIMABAD NO-2 KARACHI
ANNUAL EXAMINATION 2013
Class: 10th
Time: 3 hours Subject: Physics (Science Group) Total Marks: 85
Section A (MCQs) (17)
Q.No.1 Chose the correct answer for each from the given options.
1. The tendency of an object to resist a change in its state is known as______.
a. Momentum b. Inertia c. Rest d. Friction
2. Door is an example of__________.
a. Pulley b. Inclined plane c. Lever d. Wedge
3. The mass of an electron is______.
a. 11.9 x 10
-31
kg b. 9.11 x 10
-31
kg c. 91.1 x 10
-31
kg d. 9 x 10
-31
kg
4. One Pico farad is equal to _______.
a. 10
-6
F b. 10
12
F c. 10
6
F d. 10
-12
F
5. The refractive index of diamond is ________.
a. 1 b. 1.33 c. 2.42 d. 1.54
6. Work done is proportional to heat displaced in an electric circuit. This is called ___ law.
a. Ohms b. Boyles c. Joules d. Charless
7. One horse power is equal to _________.
a. 726 Watt b. 736 Watt c. 746 Watt d. 786 Watt
8. Two forces of 3 N and 4 N are at right angle, their resultant force is _________.
a. 1 N b. 5 N c. 7 N d. 12 N
9. The emission of invisible radiation from a nucleus is called______.
a. Moderation b. Radioactivity c. Atomic Dissipation d. Friction
10. The least count of venire caliper is _______.
a. 1 cm b. 0.001 cm c. 0.01 cm d. 0.1 cm
11. The mechanical advantage of screw Jack is _______.
a. h / 2d b. 2d / h c. L / h d. R / t
12. The product of force and moment arm is called ________.
a. Torque b. Momentum c. Work d. Velocity
13. The specific heat of water at normal temperature is _______.
a. 42000 JKg
-1
K
-1
b. 4200 JKg
-1
K
-1
c. 4100 JKg
-1
K
-1
d. 5200 JKg
-1
K
-1
14. Sound whose frequency is below the audible range is called ______.
a. Super sonic b. Audible sound c. Ultra sonic d. Infra sonic
15. The unit of power of lens is called ______.
a. Diopetr b. Meter c. Watt d. Candela
16. The speed of light in air in m/s is _____.
a. 3 x 10
9
b. 1.86 x 10
9
c. 3 x 10
4
d. 3 x 10
12
17. The half life of Krypton is _____.
a. 1.8 x 10-1 sec b. 8.64 days c. 3.16 minutes d. 3.83 days
Section B (Short answer questions) (42)
Note:- Attempt any 14 questions from this section. All questions carry equal marks.
Q.No.2 Write down three contributions of Ibne-Al-Haithm or Al-Beruni.
Q.No.3 Describe Newtons corpuscular theory of light.
Q.No.4 State any three of the following.
a. Ohms law b. Law of inertia c. Hooks law d. Snells law e. Right hand Rule
Q.No.5 Define the following
a. Systematic error b. Resultant Vector c. Moderation d. Linear Magnification
Q.No.6 A stone is dropped from the top of a tower takes 5 seconds to reach the ground. Calculate the
height of the tower.
Q.No.7 A force of 120 N acts on a stationary body for 4 seconds and the body acquires a velocity of
36 m/s. Calculate the mass of the body.
Q.No.8 Find the two rectangular components of a force of 100 N which is acting at an angle of 60
o
with X-axis. (Cos60
o
= 0.5 , Sin60
o
= 0.866)
Q.No.9 At what speed must an object travel in a circle of radius 2 m to experience centripetal
acceleration of 9.8 m/s
2
.
Q.No.10 The focal length of a concave mirror is 10 cm. Where should be an object placed so as to get a
real image magnified twice.
Q.No.11 1 Kg of water at 100
0
C is added to 5 Kg water at 30
0
C. What is the final temperature of
water?
Q.No.12 Radon has a half life of 382 days. How much of 80 g Radon would be after 764 days?
Q.No.13 Differentiate between g and G.
Q.No.14 Write down three precautions to minimize radiation danger?
Q.No.15 Write Newtons 2
nd
law with the help of F = ma
Q.No.16 Define Youngs Modulus and derive its formula.
Q.No.17 Define critical angle? Write down necessary condition for total internal reflection of light.
Q.No.18 Write down three advantages of friction.
Q.No.19 Define loudness and name the factors it depends.
Q.No.20 Define any three physical quantities which have no unit.
Q.No.21 Define equilibrium and state its two conditions.
Q.No.22 Define elastic potential energy and power.
Section C (Long answer questions) (26)
Note:- Attempt any 02 questions from this section. All questions carry equal marks.
Q.No.23(a) Define chain reaction in
92
U
256
and also define chain reaction.
(b) Differentiate between
i. Real image and vertical image. ii. Forward Bias and Reverse Bias.
iii. Define inclined plane with its mechanical advantage with the help of diagram
Q.No.24(a) Derive the equation S = vit +
at
2
(b) Calculate the length of second pendulum.
( c) Draw neat and clean diagram of electric bell and write down its characteristics.
Q.No.25(a) Draw the ray diagram compound microscope and write down its working..
(b) Draw the circuit diagram of parallel and series combination of resistances and write down the
characteristic of parallel combination.
(c) Define Simple Harmonic Motion and explain it with the help of an example.
GOVERNMENT BOYS SECONDARY SCHOOL NO-1
NAZIMABAD NO-2 KARACHI
ANNUAL EXAMINATION 2013
Class: 9th
Time: 3 hours Subject: Chemistry (Science Group) Total Marks: 85
Section A (MCQs) (17)
Q.No.1 Chose the correct answer for each from the given options.
1. Who discovered Oxygen?
a. J. Black b. Priestly c. Scheele d. Cavendish
2. The branch of chemistry which deals with the study of living things is _____ chemistry.
a. Inorganic b. Industrial c. Bio d. Physical
3. The atomic mass of chlorine is 35.5 . Calculate 2 moles of chlorine mass in gram.
a. 142 g b. 71 g c. 35.5 g d. 2 g
4. Which one of the following is a liquid metal.
a. Gold b. Silver c. Mercury d. Bromine
5. A co-ordinate covalent bond is always formed between two ____.
a. Like atoms b. Unlike atoms c. Similar atoms d.
Like and unlike atoms
6. The process in which a solid directly change into vapors is known as _____.
a. Sublimation b. Evaporation c. Boiling d. Melting
7. The sum of the mole fraction of a solute and solvent is equal to _____.
a. 3 b. 2 c. 1 d. 0
8. The electrolyte used in lead storage battery is dilute ______
a. HCl b. HNO
3
c. H
2
SO
4
d. H
2
CO
3
9. The chemical formula of Epsom salt is _______
a. Na
2
CO
3
b. CuSo
4
. 5H
2
O c. MgSO
4
. 7H
2
O d. NaHCO
3
10. What is the PH of egg white/
a. 7.8 b. 8 c. 7 d. 6.8
11. The non-crystalline form of sulphur is ____
a. Plastic sulphur b. Rhombic sulphur c.
Mono clinic Sulphur
d. Ordinary Sulphur
12. The main part of natural gas is ____
a. Methane b. Ethane c. Propane d. Butane
13. The medal given to third position holder in any event is made up of ____
a. Gold b. Silver c. Bronze d. Brass
14. Base is a substance that can donate _____
a. Proton b. Electron c. Neutron d. Molecule
15. The elements of VIIA group are known as ____
a. Lanthanides b. Actinides c. Halogens d. Radioactive metal
16. Sodium Chloride (NaCl) is an ____ compound.
a. Covalent b. Ionic c. Non-ionic d. Organic
17. The first ember of alkenes series is ____
a. Methane b. Ethene c. Ethane d. Ethyne
Section B (Short answer questions) (42)
Note:- Attempt any 14 questions from this section. All questions carry equal marks.
Q.No.2 Define chemistry. Write the names of branches of chemistry.
Q.No.3 Name there Muslim scientists and write one contribution for each one of them.
Q.No.4 Write and explain the law of multiple proportions with example.
Q.No.5 Define Mole, Avogadros number, Empirical formula and atomic number.
Q.No.6 Write name of types of chemical reactions and explain any one with example.
Q.No.7 Balance the following chemical equations.
i. NH
3
+ O
2
--- NO
2
+ H
2
O
ii. Na + H
2
O -- NaOH + H
2
iii. H
2
O
2
+ -- H
2
O + O
2
Q.No.8 Write three postulates of Daltons atomic theory.
Q.No.9 Write the three properties of cathode rays.
Q.No.10 Write three properties of transition elements.
Q.No.11 Write the three differences between ionic bond and covalent bond.
Q.No.12 Write three differences between metal and non metals.
Q.No.13 State and explain Faradays first and second law of electrolysis.
Q.No.14 State the Grahams law of diffusion of gases.
Q.No.15 Define exothermic or endothermic reaction with one example.
Q.No.16 Define double salts with example.
Q.No.17 Write three uses of Hydrogen.
Q.No.18 Write three differences between diamond and graphite.
Q.No.19 What is Silica jell? Write its formula and three uses of silica jell.
Q.No.20 What is soap/ Write names of four types of soap?
Q.No.21 Define plastics. Write names of two groups of plastics.
Q.No.22 What is Aqua Regia? How does it dissolve gold?
Section C (Long answer questions) (26)
Note:- Attempt any 02 questions from this section. All questions carry equal marks.
Q.No.23(a) Explain giving balanced chemical equations, the ammonia Solvay process for the
manufacture of Sodium Carbonate.
(b) Define radio activity. Name three types of radioactive rays and write three characteristics of
each.
Q.No.24(a) Describe Ruther Fords experiment which led him to the discovery of nucleus of an atom.
(b) State Arrhenius theory or Lewis concept of acids and bases.
Q.No.25(a) What is the difference between a primary and a secondary cell? Write construction and
working of a lead storage battery.
(b) What is electroplating? Discuss the process of Nickels electroplating.