Class & section: VIII _____ Summative Assessment I 2015 Time: 2 ½ hours
Roll No : ______Marks Obtained :
Name of the Student : ______Total Marks : 80
Signature of the invigilator : ______Science Signature of the evaluator : ______
Physics:
I. Fill in the blanks: [1x2=2]
1. If an object starts from ‘A’ and comes back to ‘A’ then its displacement is ______
2. The distance between two successive crest of a wave is ______
II. Choose the correct answer and fill in the blanks: [1x3=3]
1. Inertia of an object is directly proportional to ______
a. Mass b. Velocity c. Acceleration d. Force
2. When a candle is burnt ______energy is converted into ______energy.
a. Light to heat b. Mechanical to chemical c. Mechanical to light d. Potential to heat
3. The S I unit of density is ______a. Kg/m b. Kg/m3 c. Kg3/m d Kg2/m2
III. Give reason: [1x2=2]
1. Oil floats on water.
2. Sound are longitudinal wave.
IV. Answer as directed: [2x5=10]
1. What is an Echo? List any two applications of reflection of sound.
2. Distinguish between Potential energy and Kinetic energy.
3. What are balanced and imbalanced force?
4. Calculate the force required to change the velocity of an object of mass 8kg from 4ms-1 to 6ms-1 in 2sec.
5. If two bodies of equal masses move with uniform velocity of ‘V’ and ‘3V’ , What will be the ratio of
their Kinetic energies?
V. 1. Illustrate with an experiment to show that, a material is required for the propogation of [3x2=6]
Sound.
2. a. With a neat diagram show the arrangement of particles in solids, liquids and gases.
b. Why solids have definite shape?
c. “Gases can be easily compressed” Why?
VI. 1. a. State Newton’s laws of motion. [1x4=4]
b. Give an example for Newton’s 3rd law of motion.
Chemistry:
I. Fill in the blanks: [1x2=2]
1. Natural gas is the least pollutive fuel because of low ______
2. Indian sage Kanada called the indivisible matter as ______
II. Choose the correct answer and fill in the blanks: [1x2=2]
1. Gram molecular mass of oxygen is ______
a. 16 b. 2 c. 44 d.32
2. The process of receiving electrons is called ______
a. Oxidation b. Reduction c. Neutralization d. Condensation
III. Answer in a sentence: [1x2=2]
1. State the law of conservation of mass.
2. Define the Valency of an element.
IV. Answer as directed: [2x5=10]
1. Why is an atom neutral inspite of the presence of charge particles in it?
2. Explain the uses of gene bank and seed bank
3. Balance the following equation
a. CaCl2+NaCO3 CaCO3+NaCl
b. Fe+H2O Fe3O4+H2
4. Name the following
a. Triatomic oxygen.
b. Modern standared for measuring atomic mass.
5. State any two properties of cathode rays.
V. Answer briefly: [3x2=6]
1. Draw the structure of an atom and explain the fundamental particles
2. From the following equation calculate the amount of Zinc [Zn] require to prepare 11g of hydrogen.
Zn=65g , H=1g. Zn+H2SO4 ZnSO4+H2
VI. Draw and explain the characteristics of Anode rays.[Production of anode rays diagram]: [1x4=4]
Biology:
I. Fill in the blanks : [1x3=3]
1. In amoeba ______helps in excreting water and waste.
2. Mango belongs to the family ______.
3. Kingdom plantae and animalia was introduced by ______
II. Match the following: [1x4=4]
Organism scientific name No. of Chromosomes
1. Onion Homo Sapeins 78 ______
2. Cat Canis familians 46 ______
3. Dog Alium Cepa 38 ______
4. Man Felis domestica 16 ______
III. Answer in a sentence: [1x3=3]
1. Define detritivorous food chain.
2. Which are the organelles found more in number in the following cells:
a. pancreatic cells b. WBC
3. Why are animals included under eukaryote?
IV. Answer as directed: [2x5=10]
1. Place the following organisms in their respective kingdoms: a. Chlamydomonas b. Grass
c. yeast d. Blue green algae.
2. Name any four industrial use of bacteria.
3. Write the symptoms and mode of tramission of the diseases Aspergillus
4. Pyramid of energy for all food chain will be always upright. Why?
5. Write the functions of endoplasmic recticulum and cytoplasm.
V. Answer briefly: [3x1=3]
1. What is biomagnifications? Explain with a diagram.
VI. Draw a plant cell and animal cell and list the major difference between them.
Class & section: IX _____ Summative Assessment I 2015 Time: 2 ½ hours
Roll No : ______Marks Obtained :
Name of the Student : ______Total Marks : 80
Signature of the invigilator : ______Science Signature of the evaluator :______
Physics:
I. Choose the correct answer and fill in the blanks: [1x2=2]
1. In the equation E= hcl , the constant is ______[ E, c. h, l ]
2. With reference to the adjoining diagram, the nature of image formed is ______
[ real & diminished, real & enlarged, virtual & diminished, virtual & enlarged ]
II. 1. Define stress, mention its dimensional formula. [1]
III. Answer the following: [any 5] [2x5=10]
1. Which principle is used to fix an iron ring to a wooden cart wheel ? How ?
2. Large number of buildings in an area increases the temperature. How ?
3. Differentiate between concave lens and convex lens.
4. State Hooke’s law. Write the mathematical equation.
5. What is magnification of lens? Write the formula to find it?
6. The wavelength of a blue light is 436 nm. What is frequency?
IV. 1. What is meant by anomalous expansion of water? Write an advantage [3x2=6]
and a disadvantage of it.
2. What is a compound microscope? Draw neat ray diagram to show its working.
V. 1. Name the different theories of light and describe any two. [4x2=8]
2. a. Define Principle focus of a concave lens with neat ray diagram.
b. A concave lens of 20cm focal length form an image 15cm from the lens.
Calculate the object distance.
Chemistry:
I. Fill in the blanks: [1x2=2]
1. The chemical formula of ammophos is ______
2. The chemical used in the preparation of baking powder is ______
II. Choose the correct answer and fill in the blanks: [1x2=2]
1. The following is a biodegradable material ______
[polythene, cellulose, melamine, Bakelite]
2. Bauxite is the main source of ______
[ Chromium, Iron, Silver, Aluminium]
III. Answer in a sentence: [1x2=2]
1. Name the most important elements required for plant growth.
2. Complete the equation: i] 2NaHCO3 ∆ ______+ ______
ii] CaSO4 + 24H2O ∆ ______+ ______
IV. Answer as directed: [2x5=10]
1. What happens: i] Continuous use of fossil fuels. ii] Top soil is not protected.
2. List any two disadvantages of fertilizers.
3. Mention the special properties of organic manures.
4. Distinguish between thermoplastic and thermosetting plastic. [any two]
5. a. Rain water harvesting is the need of the hour. Give reason.
b. What message does “Saalu marada Thimmakka” convey? How does it help us?
V. Answer briefly: [3x2=6]
1. Give example for N P K fertilizers and explain its importance.
2. Mention the uses of plaster of Paris. [any three]
VI. i] How is Super phosphate manufactured? Explain with an equation. [4]
ii] Draw & explain the manufacture of cement.
Biology:
I. Fill in the blanks: [1x2=2]
1. The body cavity of Arthropods is filled with blood known as ______
2. Smoke contain a major byproduct of carbon called ______
II. Choose the correct answer and fill in the blanks: [1x2=2]
1. Argemone oil mixed with mustard oil causes ______
[ Phrynoderma, Dropsy, Kwashiorkor, Anemia]
2. Biological Nitrogen fixation is brought about by ______
[ pencillin , amoeba, nostoe, fungi ]
III. Answer the following: [1x3=3]
1. What is food adulteration?
2. List the components of the Reservoir Pool.
3. Microbes play an important role in food industry. Illustrate with an example.
4. Explain briefly the structure of thallus in multicellular fungi? [2x5=10]
5. What is nitrification? How does it help plants?
6. Genetic Engineering can be a boon. Enumerate it with an example.
7. List four symptoms of nutritional Marasnus.
8. Give scientific reason: a. Mummy prefers to buy raw tomatoes than the ripe ones.
b. A farmer doesn’t waste the agricultural wastes. He dumps all of it along with cow dung in a
huge pit.
9. a. What are perishable foods? [3x2=6]
b. How can we preserve the following foods. Explain briefly. i] packed fruits and vegetables.
ii] Green peas, jam and ready to eat food items.
10. Schematically represent the Carbon cycle.
11. List four major characteristics of Phylum Arthropoda. Draw any two Arthropods neatly. [4x1=4]
……………………………………………………………………………………
SUMMATIVE ASSESSMENT – I/II 2015-16
Class & section: X ___ Time: hours
Roll No: ______Marks Obtained:______
Name of the Student: ______Total Marks: 100
Signature of the invigilator: ______Signature of the evaluator: ______
SUBJECT: SCIENCE
1 x 10=10
I. Choose the correct option from the given choices and answer in the space provided:
1. Solar cell uses the principle of ______
a. Bio-gasification, b. Wind energy c) Photovoltaic effect d) Bio-fuel
2. In the following diagram, point B has …….. ______
a. minimum K.E, maximum P.E, zero acceleration
b. maximum K.E, minimum P.E, zero acceleration
c. maximum K.E, maximum P.E, maximum acceleration
d. minimum K.E, minimum P.E, maximum acceleration
Note: K.E: Kinetic Energy P.E: Potential energy
3. The wave length of a longitudinal wave is 1 cm and its velocity in air is 330 ms-1. Then
the frequency of this wave is ______
a. 330 x 0.01 Hz b. 33 x 102Hz c. 3.3 x 102Hz d. 33 x 103Hz
4. Petrol and air mixture is compressed in a petrol engine to ______
a. get more mechanical energy b. increase the temperature
c. mix fuel and air properly d. ignite the fuel
5. Biogenic Silica is the structural material in ______
a. Fungi b. Diatoms c. Bryophytes d. Ferns
6. Which glass is used in the manufacture of lenses and electrical insulators. ______
a. Borosilicate glass b. Potash lime glass c. flint glass d. soda lime glass
7. The rays that penetrate through the skin and destroy cells are ______
a. alpha rays b. beta rays c. gamma rays d. radio waves
8. Which among the following is not a characteristic of dicot plants______
a. taproot system b. vascular bundles in a ring c. parallel venation d. double cotyledon
9. “Pentadactyl forelimbs, four chambered heart, lungs as respiratory
organs and oviparous” are the characteristics of ______
a. Class Aves b. Class Mammalian c. Class Reptilia d. Class Pisces
10. After observing a blood sample under a microscope a student identifies RBC and WBC
based on the following observations. ______
a. RBC less in number WBC non nucleated
b. RBC non nucleated and small, WBC nucleated and large
c. RBC non nucleated, WBC non nucleated
d. RBC nucleated, WBC non nucleated
II. Match the following: [1 x 5=5]
A B C
Pollutant Sources Effects on Health
1. Carbon monoxide a. diesel exhaust, cigarette i) asthma, running nose
and stove smoke
2. Oxides of nitrogen b. pollen, animal dander, ii) asphyxia, leading to heart
house dust and system nervous
damage
3. Polycyclic aromatic c. Coal and oil power plants iii) Lung cancer
hydrocarbons oil refineries, kerosene stove
4. allergen d. motor vehicle emissions, iv) bronchial diseases
fossil fuel burning
5. Sulphur oxides e. automobile emission, v) respiratory disorders
fossil fuel burning, power
plants and oil refiners
1.
2.
3.
4.
5.
III. Answer in a word or a sentence:[1x9=9]
1. What is the effect of use and throw culture.
2. Define Nuclear Fission.
3. Expand E = mc2
4. Give one use of Silicon.
5. What are aromatic hydrocarbons?
6. What is meant by ‘pentadactyl’ condition?
7. Identify the given figure.
8. Why are the sclerenchyma fibers used to make gunny bags and ropes?
9. What are electromagnetic waves?
IV. Answer as directed (any 15 questions) [2 x 15=30]
1. Give the difference between – Solar collectors and Solar Cells.
- Transesterification and Bio-gasification
2. A heat engine has an efficiency of 20%. How high it can lift an object of mass 2 kg if
200 KJ is supplied?
3. Atomic number of Aluminum is 13. Find its position in the Modern Periodic table with
the help of electronic configuration.
4. What are Lanthanides and Actinides? Why are they placed in separate groups?
5. How is Silicon Carbide obtained? Support with the chemical equation.
6. Give the differences between Transverse and Longitudinal waves.
7. How can industrial wastes be treated?
8. Give the difference between Bryophytes and Pteridophytes with reference to their
Sporophytes and gametophytes.
9. What are unstriped muscles? What are they responsible for?
10. Write the structure and function of Sclerenchyma.
11. A student observes the floating of lotus leaf on water and wonders how it happens.
How do you help him to get rid of his confusion?
12. Give reason: a) The symptoms of AIDS take many years to appear.
b) A fish dies when it is taken out of water.
13. Observe the equations given below and distinguish them:
a)
b)
14. What are the symptoms of Avian Flu?
15. Name the diseases spread by mosquitoes and mention their name along with the
diseases.
16. Explain.
17. Write four important applications of Silicon compounds.
V. 1) Draw a neat labeled diagram of the exhaust stroke of a steam Engine.[2]
2) Draw a neat labeled diagram of the vertical section of a typical flower.[2]
3) Draw a neat labeled diagram of a neuron.[2]
4) Draw a neat labeled diagram of the preparation of Methane gas and write the chemical
equation.[3]
5) Schematically represent a Nuclear Power Reactor.[3]
6) Write the Molecular formula and structural formulae of – Isobutene, Propane, Toluene [3]
7) Write three important differences between Xylem and Phloem. [3]
8) What are the features or characteristics of a bird that enables it to fly? [4]
9) Draw and label the structure of HIV and expand the following: [1+3=4]
HPV, HSV-I, HBV, HBIG, HIV, AIDS