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What should we write about double circulation in weightage of 5 marks

Posted by Riya Jha 6 years, 3 months ago

CBSE > Class 10 > Science

3 answers

Riya Jha 6 years, 1 month ago

Thank you so much for answering ☺️

Riya Jha 6 years, 2 months ago

Thank you so much dearie... From where do you belong..

Yogita Ingle 6 years, 3 months ago

Double Circulation: In the human heart, blood passes through the heart twice in one cardiac cycle.This type of circulation is called double circulation

Double circulation ensures complete segregation of oxygenated and deoxygenated blood which is necessary for optimum energy production in warm-blooded animals.

Circulation of Blood through the heart:

Systemic Vein ⇨ Sinus Venosus ⇨ Right Auricle ⇨ Right Ventricle ⇨ Pulmonary Artery ⇨ Lungs ⇨ Pulmonary Vein ⇨ Left Auricle ⇨ Left Ventricle ⇨ Trunchus Arteriosus ⇨ Systemic Circulation

ANSWER

Which is more acetic: CH3COOH or H2O

Posted by Ravi Natesan 6 years, 3 months ago

CBSE > Class 10 > Science

2 answers

Abhi Sharma 6 years, 3 months ago

Ch3cooh is more acidic

Aadya Singh ? 6 years, 3 months ago

HCl is more acidic.

ANSWER

What do you mean by synaptic cleft?

Posted by Lucifer ? Morningstar? 6 years, 3 months ago

CBSE > Class 10 > Science

1 answers

Aadya Singh ? 6 years, 3 months ago

The gap between 2 neurons. It is also called synaptic gap.

ANSWER

What is apical dominance?

Posted by Lucifer ? Morningstar? 6 years, 3 months ago

CBSE > Class 10 > Science

1 answers

Yogita Ingle 6 years, 3 months ago

Apical dominance : It is the phenomenon in which apical bud of shoot suppresses the development of lateral buds into branches. It is induced by the plant hormone auxin.

ANSWER

Why do the ``touch me not plant``get droops when we touch it?

Posted by Lucifer ? Morningstar? 6 years, 3 months ago

CBSE > Class 10 > Science

2 answers

Ravi Natesan 6 years, 3 months ago

When we touch it, it shrinks as some chemicals released from it make the water from the leaves to evaporate

Aadya Singh ? 6 years, 3 months ago

Some Chemicals are released from the stem when we touch the plant. This Chemicals force the water to move out of the cell leading to the loss of turgor pressure. As a result, leaves droop.

ANSWER

Why acid and base not react with metals

Posted by Bisheshwar Mahto 6 years, 3 months ago

CBSE > Class 10 > Science

3 answers

Yogita Ingle 6 years, 3 months ago

Metals react with acids and displaces hydrogen from the acids to produce hydrogen gas and metal salt. If a matchstick is brought near the mouth of the tube containing the product of the reaction then we hear a pop sound. It is this hydrogen gas that burns with a pop sound.
Copper does not react with hydrochloric acid because it is below hydrogen in the electrochemical series due to which it does not react liberate hydrogen but reacts with sulphuric acid.

Raunak Chauhan 6 years, 3 months ago

Normally acid react with metal and metal are in basic nature so metal doesnot react with metal or bse

Lucifer ? Morningstar? 6 years, 3 months ago

Both react with metals

ANSWER

Process of removing the gangue from ores

Posted by Iffat Syed 6 years, 3 months ago

CBSE > Class 10 > Science

1 answers

Aadya Singh ? 6 years, 3 months ago

The process of removal of ore gangue from ores is known as concentration.

ANSWER

Which sample is best for science and social

Posted by Mohd Arbaz 6 years, 3 months ago

CBSE > Class 10 > Science

2 answers

Golu Kumar 6 years, 3 months ago

U prefer both of mtg

Honey... ??#Girl 6 years, 3 months ago

U prefer Oswal book

ANSWER

What is grotto sm

Posted by Vinod Kumar Pandey 6 years, 3 months ago

CBSE > Class 10 > Science

1 answers

Honey... ??#Girl 6 years, 3 months ago

Grotto means Hut

ANSWER

3 isomer of petane

Posted by Bhanu Chaudhary 6 years, 3 months ago

CBSE > Class 10 > Science

1 answers

Aashish Gaurav 6 years, 3 months ago

n-pentane , 2- methylbutane and 2,2 dimethylpropane

ANSWER

What is th function of galvanometer?¿

Posted by Fathima Shaniya 6 years, 3 months ago

CBSE > Class 10 > Science

3 answers

Yogita Ingle 6 years, 3 months ago

The function of the galvanometer is to detect the presence of electric current in a circuit. Galvanometer works on the principle of magnetic effects of electric current. If there is a current in the circuit, the needle in the galvanometer will show deflection. This indicates the presence of current in the circuit.

Bhanu Chaudhary 6 years, 3 months ago

It is used to measure induced current

Aadya Singh ? 6 years, 3 months ago

It is used to detect the current...

ANSWER

In amodern periodic table calcium is surrounded by elements with atomic number 12,19,21,and 38 which of them has physical and chemical properties resembling calcium

Posted by Adarsh Singh 6 years, 3 months ago

CBSE > Class 10 > Science

1 answers

Aashish Gaurav 6 years, 3 months ago

Atomic no. 38 strontium

ANSWER

Which of the following reactions is an endothermic reaction

Posted by Sajal Sharma 6 years, 3 months ago

CBSE > Class 10 > Science

1 answers

Aashish Gaurav 6 years, 3 months ago

Where are the reaction ? Those reaction in which energy is absorbed are known as endothermic reaction

ANSWER

Name the raction in which one of the reacting species loses while the other gains hydrogen .

Posted by Vaishali Chand 6 years, 3 months ago

CBSE > Class 10 > Science

2 answers

Aadya Singh ? 6 years, 3 months ago

Sorry...Reduction reaction gains hydrogen.

Aadya Singh ? 6 years, 3 months ago

Oxidation reaction loses hydrogen while the reduction reaction gains oxygen.

ANSWER

How to know the dot structure of all the elements

Posted by Aanvii Dora 6 years, 3 months ago

CBSE > Class 10 > Science

2 answers

Aiyaz Khan 6 years, 3 months ago

In any bond structure put the dot instead bond

Aashish Gaurav 6 years, 3 months ago

Put the pair of dots where sharing of electrons takes place.

ANSWER

Filariasis is caused by?

Posted by Lucifer ? Morningstar? 6 years, 3 months ago

CBSE > Class 10 > Science

1 answers

Aashish Gaurav 6 years, 3 months ago

Roundworms of filorioidea type

ANSWER

1. why respiration is known as a decomposition reaction? 2. what is exothermic and endothermic reaction with example? 3. ‘A’ brown shiny metal react with oxygen change in to black colour compound B’. Identify A& B. 4.A blue colour solution of CuSO4 is changed into light green by mixing element ‘B’ . identify B, write reaction and also write types of reactions? 5. What happens when FeSO4 heated. write complete reaction? 6. What is precipitation with example? 7. How can you say a chemical reaction occurs? 8. Define corrosion and rusting. 9. What is the formulae of rust. 10.Explain the types of chemicals reaction with example. 11. What type of chemical reaction is used to extract several metals from their naturally occurring compounds like oxides or chlorides.

Posted by Jayesh King 6 years, 3 months ago

CBSE > Class 10 > Science

11 answers

Aadya Singh ? 6 years, 3 months ago

11) Reduction.

Aadya Singh ? 6 years, 3 months ago

8) Different types of chemical reaction are - Decomposition, Combination, Displacement, Double displacement, Reduction and Oxidation.

Aadya Singh ? 6 years, 3 months ago

9) 2Fe2O3.xH2O.

Aadya Singh ? 6 years, 3 months ago

8) Corrosion- The process by which the surface of metal are slowly eaten away by air, moisture, etc.
Rusting - Corrosion of iron is known as rusting.

Aadya Singh ? 6 years, 3 months ago

7) When gas is evolved, precipitate is formed, colour is changed, temperature is changed and state is changed, then chemical reaction occurs.

Aadya Singh ? 6 years, 3 months ago

6) The reaction in which an insoluble solid called precipitate is formed is called precipitation reaction. Example -
AgNO3 + NaCl --------> AgCl (white precipitate) + NaNO3.

Aadya Singh ? 6 years, 3 months ago

5) 2FeSO4 ---------> Fe2O3 + SO2 + SO3

Aadya Singh ? 6 years, 3 months ago

4) B is iron. It is displacement reaction.
Fe + CuSO4 ------> FeSO4 + Cu.

Aadya Singh ? 6 years, 3 months ago

3) A is copper and B is copper oxide.

Aadya Singh ? 6 years, 3 months ago

2) Exothermic reaction- The reaction in which heat is evolved. Example- CaO + H2O ---------> Ca(OH)2 + Heat.
Endothermic reaction-
The reaction in which heat is absorbed. Example- N2+ O2 + Heat -------> 2NO.

Aadya Singh ? 6 years, 3 months ago

1) Respiration is known as decomposition reaction because in respiration, glucose molecules are decomposed into simpler form of CO2 and water molecules.

ANSWER

Mg+H2O------>_________ ||. Mgo+H2O --------> ________

Posted by Lucifer ? Morningstar? 6 years, 3 months ago

CBSE > Class 10 > Science

2 answers

Aadya Singh ? 6 years, 3 months ago

Mg + H2O -------> MgO + H2.
MgO + H2O ------> Mg(OH)2.

? Roman ? ( Be Happy,Never Give Up ) 6 years, 3 months ago

Mgo+H2^. Mg(oh)2

ANSWER

What is the anaerobic degredation

Posted by Anika Verma 6 years, 3 months ago

CBSE > Class 10 > Science

1 answers

Aadya Singh ? 6 years, 3 months ago

The respiration which takes place in the absence of oxygen is called anaerobic respiration.

ANSWER

Individuals animals that can change ***?

Posted by Royal Stars 6 years, 3 months ago

CBSE > Class 10 > Science

1 answers

Bhanu Chaudhary 6 years, 3 months ago

Snail

ANSWER

What is tetravelancy?

Posted by Bulsara Mitesh 6 years, 3 months ago

CBSE > Class 10 > Science

4 answers

Harshit Srivastava 6 years, 3 months ago

It is the property of an atom have four valance electron

Shamnas Adhur 6 years, 3 months ago

Because they are four stable bonds around it

Khushi Agrawal 6 years, 3 months ago

The capacity of an atom to form four stable bonds around it is known as tetravalency. Example- Carbon ,etc.??

Tanmay Bahukhandi 6 years, 3 months ago

4 electrons in the outermost shell is known as tetravalency

ANSWER

Explain biodiversity

Posted by Satyam Yadav 6 years, 3 months ago

CBSE > Class 10 > Science

3 answers

Dhakadboy Rahul 6 years, 3 months ago

Biodiversity is the existence of a wide variety of species of plant ,animals, and microorganism in a natural habitat with in a particular environment for existence of genetic variation within a species. Biodiversity of an area is the number of species range different life forms found there forest are" biodiversity hotspots"

Gaurav Sharma 6 years, 3 months ago

Biodiversity is the flora and fauna or the environment .

Satyam Yadav 6 years, 3 months ago

Those animals which can eat only gress that animals are called harbivores.

ANSWER

Three advantages of solar cells

Posted by Sujathari Sujathari 6 years, 3 months ago

CBSE > Class 10 > Science

1 answers

Aashish Gaurav 6 years, 3 months ago

It is pollution free It is cheap Electric bills can't be paid because we use energy direct from sun

ANSWER

For what purpose solar pannels are used

Posted by Sujathari Sujathari 6 years, 3 months ago

CBSE > Class 10 > Science

1 answers

Bhanu Chaudhary 6 years, 3 months ago

To reduce the use of the fossil fuel It is eco friendly fuel India has ample amount of sunlight

ANSWER

zygoat

Posted by Amit Baliyan 6 years, 3 months ago

CBSE > Class 10 > Science

4 answers

Aiyaz Khan 6 years, 3 months ago

Zygote is the 1st tissue which is formed by after fertilization. Mg+fg=fertilization_______zygote like a tissue______embroy____foetus_____fully grown baby.

Shubh Bartan Bank 6 years, 3 months ago

The first cell which formed in female after fertilization is call zygote

Raunak Chauhan 6 years, 3 months ago

The *** cell that take part in fertilization during fusion are known as zygote. Male zygote female zygote are the two zygote

Aadya Singh ? 6 years, 3 months ago

The cell which is formed by fusion of male and female gamates is called zygote.

ANSWER

What is magnitude

Posted by Vansh Khurana 6 years, 3 months ago

CBSE > Class 10 > Science

1 answers

Aadya Singh ? 6 years, 3 months ago

Magnitude refers to size or speed of an object while traveling.

ANSWER

I want hots ques of all chapters with their respective solution

Posted by Harshit Gulati 6 years, 3 months ago

CBSE > Class 10 > Science

3 answers

Aashish Gaurav 6 years, 3 months ago

Go to NCERT exempler from Arihant

Isha Bhardwaj 6 years, 3 months ago

Please concern to Google

Miss. 1234 6 years, 3 months ago

serach on GOOGLE!

ANSWER

Defination of iris

Posted by Ruksar Ansari 6 years, 3 months ago

CBSE > Class 10 > Science

2 answers

Karan Choudhary 6 years, 3 months ago

Who controls the amount of light entering in our light termed as iris

Miss. 1234 6 years, 3 months ago

A dark muscular tissue and ring-like structure behind the cornea are known as the iris.

ANSWER

For the preparation of cake, baking powder is used.if at home your mom uses baking soda instead of baking powder,how Will it effect the taste of the cake and why

Posted by Pinki Baghel 6 years, 3 months ago

CBSE > Class 10 > Science

3 answers

Raunak Chauhan 6 years, 3 months ago

Good question I ever know onced i got in doubt but I overcome from this .I thought it can be important question

Raunak Chauhan 6 years, 3 months ago

Yes ,it will affect the tastw of the cake this is because ,if we add baking soda to the cake it form sodium carbonate on heating and make the cake in bitter taste .Baking powder doesnot effect the taste of the cake because it also contain tartaric aci which netulise the any sodium carbonate form .

Yogita Ingle 6 years, 3 months ago

While making cake if baking soda is used instead of baking powder the cake will taste bitter. Baking soda (NaHCO3) is a base and we know that bases are bitter. In case of baking powder, tartaric acid neutralizes the bitter taste of baking soda. On heating baking powder produces sodium carbonate, carbon dioxide and water. Sodium carbonate makes the cake taste bitter.

2NaHCO₃ + Heat ⇨ Na₂CO₃ + CO₂ + H₂O

ANSWER

Magnetic field due to a current through a circular loop

Posted by Gurdialsarup Rohilla 6 years, 3 months ago

CBSE > Class 10 > Science

1 answers

Aashish Gaurav 6 years, 3 months ago

You can find it by right hand thumb rule

ANSWER

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