Blooming Science-9-2077 final final for press

A sample of work sheet for practical classes

AIM: TO IDENTIFY THE GIVEN SOLUTIONS AS ELECTROLYTE AND
NON-ELECTROLYTE.

Materials Required:
Graphite rods, conductor wires, galvanometer, power pack and beaker etc.

Chemical Required:

CuSO4 solution, NaCl solution, H2SO4 kerosene, carbon tetrachloride, spirit
etc.

NaCl Na+ + Cl−

CuSO4 Cu++ + SO4−−
H2SO4 2H+ + SO4−−

Theory:
Electrolyte:
_____________________________________________________________
_____________________________________________________________
_____________________________________________________________
_____________________________________________________________
_____________________________________________________________
Non-electrolyte:
_____________________________________________________________
_____________________________________________________________
_____________________________________________________________
_____________________________________________________________

Method:
1. Take the given chemicals in different beakers.
2. Connect the graphite rods with galvanometer and power supply
3. Dip the rods in solution and switch on the electricity.
4. Observe the deflection of galvanometer.

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Observation:

S.N. Name of Substance Effect in galvanometer Result

1 Copper sulphate Solution

2 Sodium chloride Solution

3 Sulphur acid

4 Kerosene

5 Carbon tetrachloride

6 Spirit

Conclusion:
_____________________________________________________________
_____________________________________________________________
_____________________________________________________________
Questions:
1. Can pure water conduct electricity? Why?
_____________________________________________________________
_____________________________________________________________
_____________________________________________________________
2. What does electro refining mean?
_____________________________________________________________
_____________________________________________________________
_____________________________________________________________
3. Dissociate the following chemicals in ionic form.
a. NaCl
_____________________________________________________________
b. H2SO4
_____________________________________________________________
c. H3PO4
____________________________________________________________
d. H2CO3
_____________________________________________________________
e. NH4Cl
_____________________________________________________________

352 Blooming Science Book 9

SPECIFICATION GRID - 2073

Compulsory Science (Theory)

Time: 2.15 hrs.

Full Marks: 75

Pass Marks: 24

Area Chapter K U A HA Remarks
Physics 5×1=5 4×2=8 2×3=6 1×4=4 23 mark
1. Measurement
Chemistry 2. Force 4×1=4 4×2=8 2×3=6 1×4=4 22 mark
3. Machine
Biology 4. Work, energy and power 5×1=5 4×2=8 2×3=6 1×4=4 23 mark
Astronomy 5. Light 1×1=1 1×2=2 × 1×4=4 7
6. Sound 6 38
and 7. Electricity and magnetism 15 13 18 4 75
Geology 15 26 16
1. Classification of elements
2. Chemical reaction
3. Solubility
4. Some gases
5. Metal
6. Carbon and its compounds
7. Water
8. Chemical fertilizers in agriculture

1. Classification of plants and animals
2. Adaptation of organisms
3. Cell, tissue and organs
4. Sense organs
5. Body system
6. Evolution
7. Nature and environment

1. Natural disaster
2. Greenhouse
3. The earth in universe

Total questions

Total marks

Note: K=Knowledge type questions U=Understanding type question

A= Application type questions HA= Higher ability type questions

Specification Grid (Practical)

Time: 45 min.

Full Marks: 25

Pass Marks: 8

Area Sketching/labeling Reporting Material Mini project Viva/ Record Total
characteristics construction work
5 5 25
5 5 5

The students will be evaluated in theory and practical.

Blooming Science Book 9 353

Model Questions

Set I

Grade: IX Full Marks :75

Subject: Science Pass Marks :30

Time: 2:15 hrs

Group A 15×1=15

1 a. What is pendulum?

b. Define balance force .

c. What is wave?

d. Define refractive index.

e. What is 2n2 rule?

f. What is molecular formula of compound?

g. Define Nascent oxygen.

h. What is caramel?

i. State allotrophy of element.

j. Why is water called universal solvent?

k. What is Taxonomy?

l. What kind of permanent tissue is xylem and phloem?

m. What is phono receptor?

n. What is nephron?

o. Write the full form of GLOF.

Group B 13×2=26

2. Write any two differences between uniform and non-uniform velocity.

3. VR of single movable pulley is 2 but fixed single pulley is 1. Why?

4. A person standing for a long time gets tired when he does not appear to do any work.
Why?

5. Write any two differences between Intensity and pitch.

6. Differentiate s-block and p-block element.

7. Write any two differences between endothermic and exothermic reaction.

8. How can we make super saturated solution?

9. Write any four advantages of chemical fertilizer.

10. In a village a campaign against snakes was lunched in which about all the snake were
killed. The farms of that region were troubled by rats that year. Why?

11. Write any four evidences of Evolution.

12. Mention any four functions of skeleton system.

13. The height of plant does not increase when its tip cut, why?

14. How does the northern hemisphere experiences the shortest day and the longest night on
22nd December?

354 Blooming Science Book 9

Group C 6×3=18
15. Convert 2.56×107 mm3 into cm3. Prove that unit of pressure is Derived.
16. Define one Newton force with interpretation of 2nd Law of motion.
17. Draw a labelled diagram of permutit and explain how it removes both hardness of water.
18. Define catalyst and show its effect on rate of reaction.
19. Write about any three sub-phylum of chordata.
20. Write any three criticism of Lamarkism.

Group D 4×4=16
21. Draw a well labeled diagram to prepare oxygen gas in Laboratory. Write any two

precaution during the preparation of gas.
22. Draw a labeled diagram of nephron with its 2 importances.
23. What is Eclipse? Draw well labelled diagram of Lunar eclipse.
24. What climate change? Mention its any 4 causes, effects and preventive measures.

Set II

Grade: IX Full Marks :75

Subject: Science Pass Marks :30
15×1=15
Time: 2:15 hrs

Group A

1. a. What is MKS system?

b. Define average velocity.

c. State Law of moment.

d. What do you mean by Chemical energy?

e. What is wave length?
f. Write the name of any two electro-positive radicals.
g. Define metal.

h. Define catenation.
i. Write two physical properties of water.
j. What is vascular tissue?
k. Write any two types of bacteria.
l. What are the major functions of Nervous system?
m. What is a cerebellum?
n. Define mutation.

o. What is Corona?



Blooming Science Book 9 355

Group B 13×2=26

2. A cricketer moves his hand backward when holding a catch, why?

3. Echo is experienced more in newly constructed room than in a furnished room. Why?

4. Write any two differences between rarer and denser medium.

5. Ammeters is always connected in series combination in an electric circuit. Why?

6. What is an electrovalent bond? Write with an example.

7. Change he following word equations into balanced equations.

i. Lime water + Carbondoxide Calcium carbonate + water

ii. Phosphorous + Oxygen Phosphorous Pentoxide

8. What is single fertilizer? Write two examples.

9. Write the harmful effect of mercury.

10. Distinguish between Larva of Culex and anopheles mosquitoes.

11. Why do ducks have flat beak and webbed leg?

12. Salty taste can be felt faster than bitter taste. Give reason.

13. Roofs of a greenhouse are made slanted. Why?

14. Write differences between biotic component and abiotic component.

Group C 6×3=18

15. What is velocity-time graph? Write any two importance of velocity-time graph.

16. Justify the bond which are present on following compound with molecular Structure.

i) MgC12 ii) NH3
17. Why carbon is called a tetravalent element? How can we say that carbon has the property

of allotrophy?

18. How is climate change is related with biodiversity and ecosystem of community? Explain
it.

19. Classify lycopodium and fish. How does the spray of oil over stagnant water control the
mosquito?

20. How does climate change impact the biodiversity? Sketch a neat diagram of artificial
green house.

Group D 4×4=16

21. A stone is thrown upward with a velocity of 72km/hr. If resistance is neglected, calculate:

a) the time taken for it to return the initial position.

b) max. height travelled by it.

22. What is polar and non-polar co-valent bond? Explain with example.

23. Write any two importance of skeleton system and present the name and number of facial
bone.

24. Sketch a labelled diagram of human eye? How does iris control the size of pupil?

356 Blooming Science Book 9

List of Video Experiments QR Code

URL Chapters

csp.codes/c09e01 Measurement

csp.codes/c09e02 Force

csp.codes/c09e03 Force

csp.codes/c09e04 Machine

csp.codes/c09e05 Machine

csp.codes/c09e06 Machine

Blooming Science Book 9 357

csp.codes/c09e07 Light

csp.codes/c09e08 Classification of Elements

csp.codes/c09e09 Chemical Reaction

csp.codes/c09e10 Solubility

csp.codes/c09e11 Solubility

csp.codes/c09e12 Some Gases

358 Blooming Science Book 9

csp.codes/c09e13 Some Gases

csp.codes/c09e14 Water

csp.codes/c09e15 Classification of Plants
and Animals

csp.codes/c09e16 Classification of Plants
and Animals

csp.codes/c09e17 Classification of Plants
and Animals

csp.codes/c09e18 Classification of Plants
and Animals

Blooming Science Book 9 359

csp.codes/c09e19 Classification of Plants
and Animals

csp.codes/c09e20 Classification of Plants
and Animals

csp.codes/c09e21 System

csp.codes/c09e22 System

csp.codes/c09e23 Sense Organs

csp.codes/c09e24 The Earth in the Universe

360 Blooming Science Book 9