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In this type of reaction there is a mutual exchange of atoms (or ions ) on both the side i.e. on reactant and product side (I hope it will help you ??

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Mansi Class12 4 years, 2 months ago

The reaction in which ions exchanged their places is called double displacement reaction.

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Sachin Thakur 4 years, 2 months ago

Those reactions in which two different atoms or group of atoms displace by other atoms or group of atoms . That is two compound exchange their ions and one of the product form is insoluble. Ex= AgNO3+NaBr -> AgBr+NaNO3 Yellow(PPT)

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Jagrati Sharma 4 years, 2 months ago

The reaction in which two different atoms or group of atoms are mutually exchanged Is called double displacement reaction.

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Bipin Kumar 4 years, 2 months ago

The reaction in which ions exchanged their places is called double displacement reaction Eg. AB+CD= AD+BC

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ANSWER

Trace tge movement if oxygenated blood from the body

Posted by A A 4 years, 2 months ago

CBSE > Class 10 > Science

3 answers

Akanksha Kumari 4 years, 2 months ago

Lungs - left atrium - left ventricle - Aorta - arteries - capillaries - cells of the body

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Bipin Kumar 4 years, 2 months ago

THE ANSWE IS nostrils to pharynx to lyrnx to trachea to bronchi to bronchioles to alveoli then all parts of body.?

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Rana Name 4 years, 2 months ago

From Heart to body

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ANSWER

Which metel stay in liquid form at room temperature

Posted by Rana Name 4 years, 2 months ago

CBSE > Class 10 > Science

5 answers

Akanksha Kumari 4 years, 2 months ago

Mercury

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Manish Kumar 4 years, 2 months ago

Mercury (Hg)

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Samarth Agarwal 4 years, 2 months ago

Mercury

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Bipin Kumar 4 years, 2 months ago

Mercury (Hg)

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Muskan Kumari 4 years, 2 months ago

Mercury

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ANSWER

Which metel stay in liquid form at room temperature

Posted by Rana Name 4 years, 2 months ago

CBSE > Class 10 > Science

4 answers

Sakshi Parmar☺☺☺ Parmar 4 years, 2 months ago

Mercury

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ℹţź? Ķ ?️ ®️ Ñ | 4 years, 2 months ago

Mercury (Hg)

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Srinithi Ramesh 4 years, 2 months ago

Mercury

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Khushi 4 years, 2 months ago

Mercury

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ANSWER

How much mark from the life process this year

Posted by Rana Name 4 years, 2 months ago

CBSE > Class 10 > Science

4 answers

Akanksha Kumari 4 years, 2 months ago

13 marks from life process

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Bipin Kumar 4 years, 2 months ago

Thnx all

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Rana Name 4 years, 2 months ago

3Thank You

Khushi 4 years, 2 months ago

Chapter 6 +8+9= 23marks

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ANSWER

Which metel can cut from knife

Posted by Rana Name 4 years, 2 months ago

CBSE > Class 10 > Science

5 answers

Mansi Class12 4 years, 2 months ago

Sodium(Na)

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Krish Agrawal 4 years, 2 months ago

Sodium

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Manish Kumar 4 years, 2 months ago

Lithium, sodium and potassium

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Muskan Kumari 4 years, 2 months ago

Sodium

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Khushi 4 years, 2 months ago

Sodium

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ANSWER

HNO3+CA(OH)2+CA(NO3)2+H2O

Posted by Aadarsh Gupta 4 years, 2 months ago

CBSE > Class 10 > Science

1 answers

Adithya Dev A 4 years, 2 months ago

2 HNO3 (aq) + Ca(OH)2 (aq) ----> Ca(NO3)2 (aq) + 2 H2O (l).

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ANSWER

32. Why does the size of the atom increase down the group?

Posted by Vishal Mishra 4 years, 2 months ago

CBSE > Class 10 > Science

3 answers

Dewang Doye 4 years, 2 months ago

Due toAddition of electronic shell to atom

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Muskan Kumari 4 years, 2 months ago

When we go down the group then the shells of atom increase

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Dhruv Verma 4 years, 2 months ago

Because one electron increase down the group

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ANSWER

Important topic from lesson. 1

Posted by Abhay Dutta 4 years, 2 months ago

CBSE > Class 10 > Science

2 answers

Ekta Yadav 4 years, 2 months ago

Redox ...also ...well!! Every topic is important ...

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Itachi Uchiha ? 4 years, 2 months ago

Chemical rxns and balanced eqn....

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ANSWER

Life process chapter main important topics kaun kaun sa hai

Posted by Susma Chatterjee 4 years, 2 months ago

CBSE > Class 10 > Science

4 answers

Ekta Yadav 4 years, 2 months ago

Nothing is worthless ... everything is important...but teko nhi padna pura toh unacedamy ke important questions krle ....susma

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Akanksha Kumari 4 years, 2 months ago

Whole chapter is very important and carry 14 marks in boards

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My Guide ... 4 years, 2 months ago

It consists of many important topics such as Nutrition in plants and animals , in human beings Respiration Transportation Excretion And Dental Caries is also important...

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Rana Name 4 years, 2 months ago

Nutrition ,,respiration,, transportation,,excretion this is important

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ANSWER

What is the contribution of mendal to genetics ?

Posted by Prasann Kushwah 4 years, 2 months ago

CBSE > Class 10 > Science

1 answers

Comedy Mm 4 years, 2 months ago

Law of inheritance given by mendel

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ANSWER

Can anybody help me... The image of an object formed by a mirror is real inverted and is of magnification -1 if the image is at a distance of 40 cm from the mirror where is the object placed?? What will be the answer to this ???

Posted by X Y 4 years, 2 months ago

CBSE > Class 10 > Science

3 answers

Adithya Dev A 4 years, 2 months ago

Be it concave or convex, object is always -ve.

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Akanksha Kumari 4 years, 2 months ago

Which mirror ???

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Saransh Mehrana 4 years, 2 months ago

40 cm in front of the mirror. (Got it)

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ANSWER

Why is DNA is copying an essential part of the process of reproduction

Posted by Kiran Yadav 4 years, 2 months ago

CBSE > Class 10 > Science

2 answers

Saransh Mehrana 4 years, 2 months ago

Because dna copying leads to the formation of offspring similar to parent and variation also p produced during this process..

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Yashi . 4 years, 2 months ago

DNA contains the blueprint for body structure of organism, it is the basic level of reproduction and mistakes in DNA copying lead to variations...

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ANSWER

Why are alloys commonly used in electrical heating device. Give reason

Posted by A A 4 years, 2 months ago

CBSE > Class 10 > Science

5 answers

Bipin Kumar 4 years, 2 months ago

Because it has high less resistivity

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Dhruv Verma 4 years, 2 months ago

Because alloy have high melting point and do not corode easily

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Saransh Mehrana 4 years, 2 months ago

Because alloys are good insulator as compared to metals.,

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A A 4 years, 2 months ago

Trace the movement of oxygenated bloodfrom the body

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Gautam Sinha 4 years, 2 months ago

Bacause it have high melting point. And it not oxidant atmosphere

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ANSWER

How water being a covalent compound show the properties of ionic compound??and why is water even a covalent compound

Posted by Ramesh Gupta 4 years, 2 months ago

CBSE > Class 10 > Science

2 answers

Bipin Kumar 4 years, 2 months ago

I didn't get your question

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Aryan Dev 4 years, 2 months ago

It is unique, it also has no confirm place in periodic table also, think it was a exception

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ANSWER

Why does baking soda doesn't contain water of crystallisation?

Posted by Ramesh Gupta 4 years, 2 months ago

CBSE > Class 10 > Science

3 answers

Adithya Dev A 4 years, 2 months ago

Because it is partially soluble in water.

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Bipin Kumar 4 years, 2 months ago

Yes, obviously it's chemical formula doesn't contain water, as it is only upto 10

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Kavya Chanana 4 years, 2 months ago

Because its chemical formula does not contain Water of crystallisation

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ANSWER

Why is diffusion insufficient to meet the oxygen required

Posted by Ankita Vijay 4 years, 2 months ago

CBSE > Class 10 > Science

2 answers

Ramesh Gupta 4 years, 2 months ago

If you are talking about human body,then perhaps I can answer it Human body is much larger and more complex in body structure then any other unicellular oragnism ,even if diffusion would take place it will take more than enough time to reach every cell of our body Thus diffusion is not sufficient for a large and complex organism

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Vansh Kamboj 4 years, 2 months ago

Hi ankita, how are you ❤ I am new here

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ANSWER

Write two uses of aluminium foil

Posted by Sayori Mukherjee 4 years, 2 months ago

CBSE > Class 10 > Science

2 answers

Muskan Kumari 4 years, 2 months ago

It is used for packing food

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X Y 4 years, 2 months ago

It is used for packing the food so that the food doesn't get rancid. It is also used to decorate food items. I'm not sure about the answers

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ANSWER

In excatory system the amino acids and glucose and water are re absorbed by

Posted by Himanshu Gurjar 4 years, 2 months ago

CBSE > Class 10 > Science

4 answers

Ramesh Gupta 4 years, 2 months ago

Caecum

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Adithya Dev A 4 years, 2 months ago

Blood.

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Keshav Yadav 4 years, 2 months ago

IN PCT(PROXIMLE COVULATED TUBULE)BY REABSORPTION.

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Harsh Raj 4 years, 2 months ago

proximal convoluted tubule of nephron

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ANSWER

Can we get sample paper without subscription on this all❓exept two those which are free

Posted by Anshika Sharma 4 years, 2 months ago

CBSE > Class 10 > Science

5 answers

Aniket Aniket 4 years, 2 months ago

I also want

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Anshika Sharma 4 years, 2 months ago

Tell me can we get or not

2Thank You

Anshika Sharma 4 years, 2 months ago

Actually I need it but I can't afford 299 rupees on it?

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Łɇǥɇnđ Ǥâmɇɍ 4 years, 2 months ago

No Maghyen

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Gopal Krishna 4 years, 2 months ago

Yes

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ANSWER

Why human being have double circulation in heart?

Posted by Anurag Singh 4 years, 2 months ago

CBSE > Class 10 > Science

5 answers

Harsh Raj 4 years, 2 months ago

to prevent mixing of pure and impure blood

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Gopal Krishna 4 years, 2 months ago

Because they have carry blood in body

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Anurag Singh 4 years, 2 months ago

Hlo prashant explain how process works

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Prashant Thenuan 4 years, 2 months ago

?????

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Prashant Thenuan 4 years, 2 months ago

Because they have ability

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ANSWER

When the potassium nitrate is heated, it decompose into potassium nitrate and oxygen. Write the chemical balanced equations for the reaction and add the symbol wherever necessary.

Posted by Shreya Singh 4 years, 2 months ago

CBSE > Class 10 > Science

2 answers

Sathana Navaneetha Krishnan 4 years, 2 months ago

Pop-up sound

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Tanvi Sharma 4 years, 2 months ago

2KNO3 ----> 2KNO2 + O2 ( potassium nitrite)

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ANSWER

The colour of the scattered light depends on the size of the scattering particles. Justify.

Posted by Angel C George 4 years, 2 months ago

CBSE > Class 10 > Science

2 answers

Adithya Dev A 4 years, 2 months ago

Sorry, red is not long particle, it is longer wavelength.

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Adithya Dev A 4 years, 2 months ago

Very fine particles scatter lights of shorter wavelengths like blue and violet shades. Comparatively bigger particles scatter lights of longer particles like red and yellow shades. Enough large particles scatter all seven colours equally and thus, gives a white appearance.

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ANSWER

Hloo guys Don't uhh thinkk that it is not so safe to go to another skul .... It's just my opinion that cbse should conduct boards in student's own skul ??

Posted by Kirtika Kaushik 4 years, 2 months ago

CBSE > Class 10 > Science

5 answers

Itachi Uchiha ? 4 years, 2 months ago

Sorry iys not Karthik it is kirtika.......... sorry

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Itachi Uchiha ? 4 years, 2 months ago

Ya u r ri8 Karthik

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Hardik Chhabra 4 years, 2 months ago

Chal hat

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Kirtika Kaushik 4 years, 2 months ago

What is thiss ¿??¿?¿?¿?

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T.Dharshan [Tds] 4 years, 2 months ago

Decomposition reaction requiring heat is known as thermal decomposition , CaCO3--------->CaO + CO2. Decomposition reaction requiring light is known as photo chemical decomposition reaction , 2AgCl-------2Ag + Cl2.

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ANSWER

Assertion:iron displace copper from copper sulphate solution reason: iron is more reactive than copper

Posted by Prachi Sharma 4 years, 2 months ago

CBSE > Class 10 > Science

3 answers

X Y 4 years, 2 months ago

Both A and R are correct and R is the correct explanation of A

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Harsh Raj 4 years, 2 months ago

option A

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Kirtika Kaushik 4 years, 2 months ago

Assertion and reason both are true and reason is the correct explaination of the assertion

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ANSWER

What are the difference between elements which are placed above the Hydrogen and below hydrogen in reactivity series

Posted by Fox Faizal 4 years, 2 months ago

CBSE > Class 10 > Science

3 answers

Suryansh Tomar 4 years, 2 months ago

All the elements which are placed above the Hydrogen are highly reactive elements or we can say that they lose their electron easily and all the metals which are below hydrogen are least reactive or we can say that they not lose their electron easily

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T.Dharshan [Tds] 4 years, 2 months ago

All metals that are found above hydrogen in the activity series liberate H2 gas upon reacting with dilute HCl or dilute H2SO4. Metals that are placed higher on the reactivity series have the ability to displace metals that are placed lower from their salt solutions.

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Kirtika Kaushik 4 years, 2 months ago

Above hydrogen have more reactive than hydrogen and the below ones and below hydrogen are less reactive than hydrogen and the above ones..... Hope it will help uhh ??

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ANSWER

I can spend rs. 9.00 per month for electricity bill. If rate is 3 paise per kwh and I use 5 identical bulb for 5 hr. What should be the power of each bulb?

Posted by Plaksha Jain 4 years, 2 months ago

CBSE > Class 10 > Science