Sunday, August 8, 2021

8th सेतु चाचणी क्रमांक एक सा.शास्त्र


इतिहास



 प्रश्न एक) खालील रिकाम्या जागी योग्य शब्द भरा रा

 1) शिलालेख हा इतिहास लेखनाचा फार महत्त्वाचा आणि विश्वसनीय पुरावा मानला जातो,


2)उदयसिंह यांच्या मृत्यूनंतर महाराणा प्रताप हा मेवाडच्या गादीवर आला


3)  नायनार हे शिवभक्त होते


4) पुरंदरच्या तहानंतर जयसिंगाने आदिलशाही विरुद्ध मोहिम हाती घेतली


 प्रश्न दोन) गटात न बसणारा शब्द शोधा

1)  पुणे, सुपे, चाकण, बंगळूर

 उत्तर: बंगळूर


2) शहाजी, संभाजी , तानाजी, व्यंकोजी

 उत्तर:  तानाजी


3)ओव्या,  तवारीख, कहाण्या, मिथके

 उत्तर: तवारीख



 प्रश्न तीन) खालील प्रश्नांची एका वाक्यात उत्तरे लिहा

1) शिवाजी महाराजांच्या आरमाराचे प्रमुख अधिकारी कोण होते?

  उत्तर: शिवाजी महाराजांच्या आरमाराचे प्रमुख अधिकारी मायनाक भंडारी व दौलत खान होते


2)  पुरंदरचा त ह कोण कोणाचा झाला?

 उत्तर: पुरंदरचा तह शिवाजी महाराज व जयसिंग यांच्या झाला.


3)  कोणतेही चार स्त्री संतांची नावे लिहा

1) संत मीराबाई

2) संत मुक्ताबाई

3) संत जनाबाई

4) संत कान्होपात्रा


 प्रश्न 4 कारणे लिहा

1)शिवाजी महाराजांनी मोगलांविरुद्ध आक्रमक पवित्रा घेतला

 उत्तर: मुगल सैन्याने स्वराज्यातील भूप्रदेशाची मोठी  हानी केली होती तसेच पुरंदरच्या तहात मोगलांना दिलेले किल्ले आणि  प्रदेश परत मिळवण्यासाठी शिवाजी महाराजांनी मुघलांविरुद्ध आक्रमक पवित्रा घेतली

2)  महाराणा  प्रताप इतिहासात अजरामर झाले

 उत्तर:  मेवाडच्या अस्तित्वासाठी महाराणा प्रताप  मुघलांनबरोबर संघर्ष चालू ठेवला आणि त्यांनी स्वातंत्र्य टिकवण्यासाठी अकबरा बरोबर संघर्ष केला  पराक्रम,, शौर्य, त्याग इतिहासातील गुणांमुळे ते इतिहास आज रामर झाले



भूगोल


 प्रश्न एक) पृथ्वी गोलाची निरीक्षण करू पुढील विधाने योग्य विधाने दुरुस्त करा आणि पुन्हा लिहा.


1) रेखावृत्त एकमेकांना समांतर असतात 

 उत्तर :अयोग्य विधान

 रेखावृत्त एकमेकांना समांतर नसतात


2 )मुळ रेखावृत्त हे अक्षवृत्त ला समांतर असते

 उत्तर: अयोग्य विधान

 मुळ रेखावृत्त हे अक्षवृत्त ला समांतर नसते


 प्रश्न 2) योग्य पर्याय निवडून वाक्य पूर्ण करा


1)  हवा प्रसरण पावली ________

 उत्तर  हवा प्रसरण पावली की विरळ  होते


2 )पृथ्वीवर हवेचा  दाब---------

 उत्तर  पृथ्वीवर हवेचा दाब असमान असतो


 प्रश्न 3) भौगोलिक कारण लिहा

1) सह्याद्री या पश्चिम भागात बेसाल्ट खडकापासून जांभा मृदा तयार होतो

 उत्तर  सह्याद्रीच्या पश्चिम भागात हवामान दमट असते तसेच तेथे अतिवृष्टी होते पैसा खडकाची विदारण मोठ्या प्रमाणात होते अति पावसाच्या प्रदेशात खडकाचे झालेले विदारण मोठ्या प्रमाणात वाहून जातो मूळ खडक उघडा पडतो खडकातील लोहाचे वातावरण प्राणवायूशी संयोग  होऊन रासायनिक क्रिया घडते जांभी मृदा तयार होते व त्यामुळे तिला जांभळा रंग प्राप्त होतो 


Bridge course 8th science test 3

 Q1) 

A)Complete the statement by choosing the right option

I) the frequency of of Audible Sound  is is  20Hz To 2000Hz 


ii) To avoid  sprouting ,Potatoes are exposed to Radiation .


iii) The chemical symbol of calcium is CA

B)Write the answer to the following questions.

i) identify the constellations Shows in the accompanying figure.



Answer:  Scorpio or are vrishchik



i)Solve the puzzle.

1)An ingredients derived  from Petroleum

2) the main compound of natural gas












E







R







O







S







E


M

E

T

H

A

N

E






E





iii) Write examples of natural disinfectants.

 answer: soap nut( Ritha )And Sop pod(ShikaKai) 


Q2)Write the answer to the following questions.


I) draw a vertical intersection of the Hibiscus flower and  label its part


2)Write the scientific name of the animal shows in the picture using Binomial  nomenclature

genus: Bos        Species:taurus


3) What are the important compounds of toothpaste? What are their functions?

 answer: the important Ingredients of the The toothpaste are calcium carbonate and Calcium hydrogen phosphate. These substances remove the dirt from the teeth. They also helped To polish the teeth. Fluoride is also added to toothpaste. This prevents tooth decay fluoride makes the teeth strong. 




4)Under which different types can the following changes be classified ?

i) dissolving

physical , useful, fast, irreversible, non-periodic changes



ii)  a meteor streaking across the Sky

 chemical harmful, fast, irreversible,Non-periodic changes



5) Which molecules contract and relax, while lifting a heavy object from the ground?

 answer: lifting heavy objects from the ground, when molecules contract  there is  movement At the jointAnd the Bones  the move Ether mirror aur away from each other.


Q3) write the answer to the following questions.

1) complete  the Following table. 

Compound

molecules formula

the name of the constituent elements

Sulphuric acid

H2 s o4 

hydrogen, sulphur, oxygen

washing soda( sodium Carbonate)

n a0 h

sodium, oxygen, hydrogen

sugar

  c C12 h22 o 11

  carbon,Oxygen, hydrogen




2)Write the medicinal uses of basil, Amla , neem

Basil: skin ,Debits, digestion, head  cold

 Amla: immunity, health  heart, digestion

 neem: fever and cold


3) complete the following table





4)What is fermentation ? What changes occur in the substance during  this action? Name the substance produced by fermentation in our daily life?

 Answer

  fomentation: fermentation if the chemical process of  conversion Of a  carbonCompound into its another type  by action of microorganism

 The flour Is  fermentedTo produce bread. in batter of Idli and dosa  etc.

 microbial processes used 




Bridge course 8th science

 Test number 2


Q1) write the answer of the following questions

1) observe the given picture carefully. How would  you avoid this ?





Answer:  picture shows leather shoes get affected by fungi due to moisture. we would avoid this by applying polish or oil on the leather shoes.

Sunday, August 1, 2021

Bridge course 8th science


Test number 1


Q1  write the answer to the following questions.

1)Complete the following chemical equations.

Answer:6co2+ 6H2o Sunlight  C6H12o6 +6o2

                                 Chlorophyll


2)Write the the two examples of chemical Preservatives

Answer: 1) acetic acid

              2) citric acid


3)Identify who I am? And what kind  of

Nutrition would you include me in?

 I live in the hair on my head and get my foot by

observing blood.

 answer: ecto parasite , lice.


Q2)Write the answer to the following questions.

1) what precautions should you take while buying

food in airtight containers/ bags? Why?

 Answer :check the packing of containers.

check the expiry date off containers
 check the time span to use the product
within the time.

 because sometimes  microbes  grow in it 

they cause Ham to use .



2)Divide the amount given in parentheses Into scalar and

Vectors quantity 

(Area, velocity,  weight ,Move, displacement, distance,

mass)

   Scalar  quantity :Distance,  mass, area.

Vectors quantity :Displacement, velocity, weight,

move


3)Why does this happen? If the cold water bottle is

taken Out of the fridge and kept outside, water

drops on the outer surface of the Bottle appear 

to  have accumulated.

Answer: the cold water bottle temperature is

  lower  than Room temperature when vapou

r in air come contact with the bottle surface

it gets  condense. due to Tu tu condensatron

of vapour water Drop accumulated On the

bottle surface. 



4)What is the property of water shown in the picture

called? How does it benefit aquatic animals?

 answer: the property is anomalous Behaviour

of water due to this property when temperature

of water fall down To  zero degree celsius it

become  ice, but water below the layer of ice

semaine  4 degree Celsius this 4 degree celsius

temperature help aquatic animals to

survive in cold segron.


Q3)Write the answer to the following questions.


1) identify the name of the plant in the picture.

explain what adaptations have been made

to the trunk, roots And leaves in order to

survive in a desert or low- water region.

Answer: The name of the plant in the picture  is cactus .

It is a desert plant.

 adaptation:  trunk is fleshy To  Store water

and food.

Roots penetrate Dip in soil in search of water.

 leave either  absent or needle like to

reduce evaporation.



2) write the answer to the question by

  observing the accompanying  picture.



i)Write the name of part A and part B

 Answer:  A- a leaf Apex

 B-  stipule


ii) what is the type of  leaf?

 Answer:  the type of leaf is a simple  leaf.


iii)What is the structure of leaf veins ?

Answer: the structure of leaf seticulate venation