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Human circulatory system consists of blood, arteries, veins, capillaries, lymph etc which help in the transportation and circulation of minerals, oxygen, nutrients etc from on organ to another.

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Kirti Ranjan 2 years, 8 months ago

A system which helps an organism in transportation or food and nutrients is known as circulatory system. Human circulatory system consists of blood plasma capillaries and heart.

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Omya Aryan 2 years, 8 months ago

Acids are sour in taste which turns blue litmus red.

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Zoher Kalynpura 2 years, 8 months ago

What is the acid

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Omya Aryan 2 years, 8 months ago

Human circulatory system consists of blood, arteries, veins, capillaries, lymph etc which help in the transportation and circulation of minerals, oxygen, nutrients etc from on organ to another.

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ANSWER

What is the photosynthesis

Posted by Shilpi Kumari 2 years, 8 months ago

CBSE > Class 10 > Science

5 answers

Keerti Mishra 2 years, 8 months ago

The process by green plants carbon dioxide and water to convert their food in the present of sunlight are called photosynthetic

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Shazid Raza 2 years, 8 months ago

Photosynthesis is the process by which autotrops make their own food in the presence of sunlight and carbon dioxide with the help of chlorophyll and water

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Shivam Choudhary 2 years, 8 months ago

The process by which green plant turn carban dioxide and water into food using energy from sunlight

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Puja Rani 2 years, 8 months ago

Photosynthesis is a process by which autotrophs take in substances from the outside and convert them into stored forms of energy.

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Omya Aryan 2 years, 8 months ago

Photosynthesis is a process by which autotrophs take in substances from the outside and convert them into stored forms of energy.

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ANSWER

What is the substance by which match box brown substance is made?

Posted by Madhu Patil 2 years, 8 months ago

CBSE > Class 10 > Science

2 answers

Puja Rani 2 years, 8 months ago

Phosphorus

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Omya Aryan 2 years, 8 months ago

The brown strip on match box is made by red phosphorus and powder glass

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ANSWER

Important term in the chapter our environment

Posted by Shruti Singh 2 years, 8 months ago

CBSE > Class 10 > Science

3 answers

Shruti Singh 2 years, 8 months ago

Thankyou for telling me the important topic of this chapter

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Hitesh Singh 2 years, 8 months ago

Ecosystem... Tropic level ... Food chain .... Food web .... Biological magnification.... Ozone layer .... 10%law of energy... Ozone layer .... Depletion of ozone layer...

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Soham Singh 2 years, 8 months ago

Ecosystem, Food Chain and Food Web, Ozone layer depletion and about garbage

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ANSWER

What is bud chewing ?

Posted by Vanshika Agrawal 2 years, 8 months ago

CBSE > Class 10 > Science

0 answers

ANSWER

What is the mendels experiment

Posted by Kartik Sahu 2 years, 8 months ago

CBSE > Class 10 > Science

1 answers

Supriya Kaluvala 2 years, 8 months ago

Mendel experiment is about cross pollination and self pollination of pea plant . Mendel chose pea plant as it has different contrasting traits and it asexual and sexual flower so we can do dihybrid or monohybrid cross. From Mendels experiment two laws have been found . First is law of segregation and law of dominance

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ANSWER

In Mendel's law of inheritance, there's genotype 1:2:1 & phenotype 3:1 after result of monohybrid cross. How it is possible explain with suitable cross. Which law states this ratio?

Posted by Account Deleted 2 years, 8 months ago

CBSE > Class 10 > Science

1 answers

Jasmine . 2 years, 8 months ago

Law of segregation

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ANSWER

Which character of angiosperm is unique & explain with the help of diagram?

Posted by Account Deleted 2 years, 8 months ago

CBSE > Class 10 > Science

0 answers

ANSWER

Define pottential difference

Posted by Ashutosh Sharma 2 years, 8 months ago

CBSE > Class 10 > Science

1 answers

Omya Aryan 2 years, 8 months ago

Potential difference is the amount of work done in moving 1 coulomb of charge in a unit time.

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ANSWER

Taj Mahal, the great wonder of the world, is made of white marble which is composed of calcium carbonate. About 60 years ago it was discovered that this monument is being eaten away by acid rain. The Archeological survey of India, that looks after this building of historical importance is of the opinion that the atmospheric pollution due to vehicular traffic and industries, mainly Mathura Refinery may be a major cause of acid rain in and around the monument. Normal rain is slightly acidic because it absorbs some CO, from the atmospheric air. Acid rain is more acidic than normal rain because it also has absorbed oxides of nitrogen and sulphur. (a) What happens when marble is heated? Write the chemical reaction. What type of reaction is it. Name the product formed in this reaction which is used in the manufacture of cement. How will you test the gas evolved in this reaction. (b) Write down observations which help us to determine whether a chemical reaction has taken place or not. Or (b) A solution of a substance "X" is used for white washing. () Name the substance X and write its formula. (i) Write the reaction of substance X with water.

Posted by Sonali Negi 2 years, 8 months ago

CBSE > Class 10 > Science

1 answers

Omya Aryan 2 years, 8 months ago

(a) When marble(CaCO3) is heated, it decomposes into Quick lime(CaO) and Carbon dioxide(CO2). (b) •Change in temperature •Change in colour • Change in state •Evolution of gas. OR (b) Calcium Oxide (CaO) is used for white washing. (i) CaO+H2O -------› Ca(OH)2

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ANSWER

Can anyone post chennai sahodaya science pre board question paper?

Posted by Mourya Selvaraj 2 years, 8 months ago

CBSE > Class 10 > Science

0 answers

ANSWER

In an experiment with a rectangular glass slab a student observed that a ray of light incident at an angle of 55° with the normal on one face of the slab , after refraction strikes the opposite face of the slab before emerging out into air making an angle 40° with normal.Draw a labelled diagram to the angle of refraction and angle of emergence

Posted by Muskan Dhiman 2 years, 8 months ago

CBSE > Class 10 > Science

0 answers

ANSWER

Explain with the help of a ray diagram why a pencil partially emerged in water appears to be bent at water surface

Posted by Muskan Dhiman 2 years, 8 months ago

CBSE > Class 10 > Science

1 answers

Omya Aryan 2 years, 8 months ago

It is due to a phenomenon called refraction. Light rays are unable to travel faster in water as compared to the air.

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ANSWER

The near point of a hypermetropic eye is 50 can what is the nature and power of the lens required to enable him to read a book placed at 25cm from the eye

Posted by Tilak Gautam Gautam 2 years, 8 months ago

CBSE > Class 10 > Science

1 answers

Aastha Vats 2 years, 8 months ago

Convex lens , 2 dipometre

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ANSWER

What is blood pressure ?

Posted by Aryan Khan 2 years, 8 months ago

CBSE > Class 10 > Science

2 answers

Kriti Mallah 2 years, 8 months ago

A condition in which the force of the blood against the artery walls is too high.

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Aastha Vats 2 years, 8 months ago

The force that blood exerts against the wall of a vessel is called blood pressure.

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ANSWER

"As the blood sugar level in our body falls insulin secretion is reduced. " Justify this statement in the reference of feedback mechanism that regulates the timing and amount of hormone released.

Posted by Sharma Sharma 2 years, 8 months ago

CBSE > Class 10 > Science

1 answers

Kriti Mallah 2 years, 8 months ago

Insulin balance the sugar label in our body

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ANSWER

What are the advantages of solenoid

Posted by Mriganko Biswas 2 years, 8 months ago

CBSE > Class 10 > Science

3 answers

Devraj Sharma 2 years, 8 months ago

A solenoid behave like a bar magnet

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Soham Singh 2 years, 8 months ago

Solenoid is a magnet that can be switched off and on. We can also change the strength of magnetic field by the increasing or decreasing of current

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Diva Sand 2 years, 8 months ago

Solenoid act as as a bar magnet It can even form an electromagnetic material

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ANSWER

How to learn Ray diagram of physics

Posted by Naveen Yadav 2 years, 8 months ago

CBSE > Class 10 > Science

4 answers

Dev Sharma 2 years, 8 months ago

It's easy to understand not learn . You can try ourself ray diagram and row wise understand it.

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Shruti Singh 2 years, 8 months ago

Do practice diagram will help you

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Rohit Kumar 2 years, 8 months ago

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Arsh Mia 2 years, 8 months ago

It's easy just do some partice

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ANSWER

What is the chemical formula for baking soda

Posted by Mohammad Farhan 2 years, 9 months ago

CBSE > Class 10 > Science

5 answers

Khwaish Bansal 2 years, 8 months ago

Na2CO3

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Ashish Jadhav 2 years, 8 months ago

NaHCO3

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Vaishnavi Gundage 2 years, 9 months ago

Ishwar kiske hriday mein vas karta hai Hindi

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Omya Aryan 2 years, 9 months ago

Sodium Bi Carbonate

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Omya Aryan 2 years, 9 months ago

NaHCO3

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ANSWER

White washing

Posted by Sumbul Kaur 2 years, 9 months ago

CBSE > Class 10 > Science

4 answers

Dev Sharma 2 years, 8 months ago

Calcium oxide

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Jessika Chauhan 2 years, 8 months ago

cao

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Naveen Yadav 2 years, 8 months ago

CaO

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Omya Aryan 2 years, 9 months ago

CaO i.e. Calcium Oxide

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ANSWER

1.In the following practical set which of the following gas is emitted? (a)Hydrogen (b)Carbon monoxide (c)Carbon dioxide (d)Nitrogen

Posted by Abiya Afrin 2 years, 9 months ago

CBSE > Class 10 > Science

1 answers

Omya Aryan 2 years, 9 months ago

Hydrogen and Carbon dioxide

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ANSWER

How did mendel experiment shows that different traits are inherited independently explain

Posted by Riya Panu 2 years, 9 months ago

CBSE > Class 10 > Science

2 answers

Aastha Vats 2 years, 9 months ago

During dihybrid cross by Mendel, it was observed that when two pairs of traits were considered; each trait expressed independently of the other.

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Zoyaa Qamar 2 years, 9 months ago

Mendel dihybridation experiment shows that that different traits are inherited independently In his experiment he took YELLOW AND ROUND SEED × GREEN AND WRINKLE SEED and get the ratio 9:3:3:1 Yellow and round: yellow and wrinkled: green and round: green and wrinkleed After these results the proposed his third law LAW OF INDEPENDENT ASSORTM ENT

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ANSWER

Why do aquatic can't breath outside the water?

Posted by Tanvi Sree Sivapooja 2 years, 9 months ago

CBSE > Class 10 > Science

2 answers

Divisha Sahani 2 years, 9 months ago

In English While humans and terrestrial animals breathe oxygen from the air, aquatic animals use oxygen that is dissolved in water. An aquatic animal breathes by absorbing free oxygen into its blood through its gills or directly through its body surface.

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Tanvi Sree Sivapooja 2 years, 9 months ago

Because they can't breath directly from the atmosphere

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ANSWER

What are monochromatic light rays

Posted by Amit Rana 2 years, 9 months ago

CBSE > Class 10 > Science