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describ cleansing action os soap.why do soaps not form lather in hard water

Posted by Soniya Sharma 5 years, 8 months ago

CBSE > Class 10 > Science

1 answers

Yogita Ingle 5 years, 8 months ago

Most of the dirt is oily in nature and oil does not dissolve in water. The molecule of soap constitutes sodium or potassium salts of long-chain carboxylic acids. In the case of soaps, the carbon chain dissolves in oil and the ionic end dissolves in water. Thus the soap molecules form structures called micelles. In micelles, one end is towards the oil droplet and the other end which is the ionic faces outside. Therefore, it forms an emulsion in water and helps in dissolving the dirt when we wash our clothes.

Soaps are sodium or potassium salts of long-chain fatty acids. Hard water contains calcium and magnesium ions. When soaps are dissolved in hard water, these ions displace sodium or potassium from their salts and form insoluble calcium or magnesium salts of fatty acids. These insoluble salts separate as scum.

This is the reason why soaps do not work in hard water.

ANSWER

He

Posted by ♔〘Mùhükshã〙♔ . 5 years, 8 months ago

CBSE > Class 10 > Science

75 answers

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ANSWER

Yah ka pad parichaya kya hai in hindi set 3

Posted by Prashant Sharma 5 years, 8 months ago

CBSE > Class 10 > हिंदी ए

0 answers

ANSWER

Hamen talabya jhil ko saaf karne ki jarurat Nahin Hai jabki Ek aquarium Ko padati Hai Kyon

Posted by Inder Gopal Yadav 5 years, 8 months ago

CBSE > Class 10 > विज्ञान

3 answers

Sneha...... Dream Girl ??? 5 years, 8 months ago

Shi kaha???

Sanjukta Prusty 5 years, 8 months ago

Common sense lagao Apne aquarium ko bhi saaf mt krna wo bhi waisa hi ho jayega?

Sanjukta Prusty 5 years, 8 months ago

Isliye to talab aur jhil mei kaai lg ti h ?

ANSWER

Dubble fertilisation and tripal fussion

Posted by Anchal Patidar 5 years, 8 months ago

CBSE > Class 10 > Science

0 answers

ANSWER

Give mathematical formula for determining magnification produced by in sperical mirror. what does M = -1 signify? identify the mirror that can produce it.

Posted by Nitin Tiwari 5 years, 8 months ago

CBSE > Class 10 > Science

0 answers

ANSWER

Sporangiophores....or sporangia ......or sporangium Difference??

Posted by Shreya S❤ 5 years, 8 months ago

CBSE > Class 10 > Science

3 answers

Sowndaryaa Lakshmi V 5 years, 8 months ago

Bhai kya behen?. I don't know

Shreya S❤ 5 years, 8 months ago

Bhai difference .... Antar antar!!!

Sowndaryaa Lakshmi V 5 years, 8 months ago

Sporangia

ANSWER

How can we derive the formula of kinetic energy by Newtow's second law of motin

Posted by Shakti Jha 5 years, 8 months ago

CBSE > Class 10 > Science

0 answers

ANSWER

Why variation is not benefical in individiual?

Posted by Sristi Prerna 5 years, 8 months ago

CBSE > Class 10 > Science

1 answers

Shreya S❤ 5 years, 8 months ago

Can cause mutation however its beneficial as it increases survival chances . All variation r not beneficial

ANSWER

hwo to balance equation ??????

Posted by Riya Singh 5 years, 8 months ago

CBSE > Class 10 > Science

3 answers

Riya Singh 5 years, 8 months ago

???what

Shreya S❤ 5 years, 8 months ago

Hit and trial

Riya Singh 5 years, 8 months ago

how*

ANSWER

Best science question

Posted by Durgesh Kumar Singh 5 years, 8 months ago

CBSE > Class 10 > Science

0 answers

ANSWER

Please explain magnetic effect of current

Posted by Komalpreet Kaur 5 years, 8 months ago

CBSE > Class 10 > Science

0 answers

ANSWER

Manav Netra ka diagram

Posted by Sanjay Prajapati 5 years, 8 months ago

CBSE > Class 10 > विज्ञान

3 answers

Śěřãj The Cute? 5 years, 8 months ago

You tube par simple tacnic hai iski

Inder Gopal Yadav 5 years, 8 months ago

thoda sense lagao aur ncert khol ke dekh lo

Śěřãj The Cute? 5 years, 8 months ago

Nahi bana sakte

ANSWER

In a village of South india people started cultivating crops all around a lake they added fertilizer to their field in order to enhance the yeild soon after it was discovered that the water body was completely covered with green floating plants and the aquatic animals started dying in large numbrs . Anaylse the situation and state reasons for the excessive growth of plants and death of aquatic animals in the lake

Posted by Kumkum Kaushal 5 years, 8 months ago

CBSE > Class 10 > Science

1 answers

Shreya S❤ 5 years, 8 months ago

Eutrophication and biomagnification and decrease of oxygen in water body

ANSWER

What is difference b/w oxidised agent & oxidising Agent

Posted by Kanishk Saini 5 years, 8 months ago

CBSE > Class 10 > Science

1 answers

Deepak Silaych 5 years, 8 months ago

There is nothing like oxidized agent

ANSWER

What is blue print of science 2020

Posted by Aditya Yadav 5 years, 8 months ago

CBSE > Class 10 > Science

2 answers

Sowndaryaa Lakshmi V 5 years, 8 months ago

Refer sample paper

Sowndaryaa Lakshmi V 5 years, 8 months ago

?

ANSWER

What happen when milk is left open at room temperature during summer

Posted by Vaibhav Patel 5 years, 8 months ago

CBSE > Class 10 > Science

1 answers

Deepak Silaych 5 years, 8 months ago

Lactic acid will form which convert milk into curd. ADDITIONAL: thats why milkman sad little bit base in milk during summer to maintain ph.

ANSWER

compound formed when an element , A of group 2 combines with an element , B of group 17

Posted by Komal Singh 5 years, 8 months ago

CBSE > Class 10 > Science

3 answers

Shreya S❤ 5 years, 8 months ago

Ab2

Deepak Silaych 5 years, 8 months ago

Sorry Pooja patel, Compound will form AB2 because A have 2 valancy where B have 1 valency

Vaibhav Patel 5 years, 8 months ago

Compound formed will be "AB"

ANSWER

In any equation how can we say that this is solid,liquid,gas,aqueous ? In chapter 1

Posted by Kanchan Soni 5 years, 8 months ago

CBSE > Class 10 > Science

0 answers

ANSWER

What is the colour of zinc

Posted by Sahil Nagar 5 years, 8 months ago

CBSE > Class 10 > Science

2 answers

Nishant Jaswal 5 years, 8 months ago

Silver

Rahul Jangid 5 years, 8 months ago

Red

ANSWER

Ashu Mikku Sowndaryaa Diksaha Rj Ritesh kaise ho sab koi

Posted by Sm .. 5 years, 8 months ago

CBSE > Class 10 > Science

14 answers

Sowndaryaa Lakshmi V 5 years, 8 months ago

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Sowndaryaa Lakshmi V 5 years, 8 months ago

I am alone?

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Byew

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Bye

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Hii sis❤️

ANSWER

Why voltmeter have high resistance?

Posted by Utkarsh Varshney 5 years, 8 months ago

CBSE > Class 10 > Science

4 answers

Nishant Jaswal 5 years, 8 months ago

Voltmeter has high resistance because it measures the voltage difference between two different points, but it should not change the amount of current going through the element between those two points

Deepak Silaych 5 years, 8 months ago

Voltmeter is always connected in parallel with the load hence Is should have high resistance so that current doesnt pass through it .

Komal Maheshwari 5 years, 8 months ago

Noo.. Volmeter Just for measuring current ....not high or less

Tushar Kumar 5 years, 8 months ago

I don't know

ANSWER

Explain double circulation system

Posted by Arshad Ansari 5 years, 8 months ago

CBSE > Class 10 > Science

2 answers

Nishant Jaswal 5 years, 8 months ago

Voltmeter has high resistance because it measures the voltage difference between two different points, but it should not change the amount of current going through the element between those two points

Deepak Silaych 5 years, 8 months ago

This term refer to the passing of blood from heart twice. First heart pump blood towards body and then towards lungs

ANSWER

Jan gan man ki sargam ayegi

Posted by Mohit Yadav 5 years, 8 months ago

CBSE > Class 10 > Music

2 answers

Manoj Kumar 5 years, 8 months ago

Ha

Nishant Jaswal 5 years, 8 months ago

Na

ANSWER

नया का पद परिचय

Posted by Shalini Sengar 5 years, 8 months ago

CBSE > Class 10 > हिंदी ए

1 answers

Prashant Sharma 5 years, 8 months ago

Gunvachak visheshan,eakvachan

ANSWER

What do u mean by the term unity in maths

Posted by | | | {R J } .....! ! !: ; 5 years, 8 months ago

CBSE > Class 10 > Mathematics

2 answers

Sowndaryaa Lakshmi V 5 years, 8 months ago

Hi

Deepak Silaych 5 years, 8 months ago

Unity refers to 1 (one) in maths .the first non zero natural number.

ANSWER

Definition of enzyme

Posted by Riya Jaiswal 5 years, 8 months ago

CBSE > Class 10 > Science

6 answers

Suraj Mishra 5 years, 8 months ago

Enzyme are those chemical which help in digestion of food in human body

Sowndaryaa Lakshmi V 5 years, 8 months ago

Hi

| | | {R J } .....! ! !: ; 5 years, 8 months ago

Pata chal gaya!!

Aadya Singh 5 years, 8 months ago

Of*

Aadya Singh 5 years, 8 months ago

Enzyme is an substance which acts as a catalyst and speed up rate od chemical substance....

Riya Jaiswal 5 years, 8 months ago

Koi batao yarrr

ANSWER

What is silt

Posted by Riya Jaiswal 5 years, 8 months ago

CBSE > Class 10 > Science

2 answers

| | | {R J } .....! ! !: ; 5 years, 8 months ago

sand, soil or mud that collects at the sides or on the bottom of a river

Aadya Singh 5 years, 8 months ago

Silt...??? Or split ring...???

ANSWER

What is meant by nomenclature

Posted by Aditya Ilage 5 years, 8 months ago

CBSE > Class 10 > Science

2 answers

| | | {R J } .....! ! !: ; 5 years, 8 months ago

Naming of organic compounds

| | | {R J } .....! ! !: ; 5 years, 8 months ago

Organic compounds ka naam karan

ANSWER

What is amalgm

Posted by Riya Jaiswal 5 years, 8 months ago

CBSE > Class 10 > Science

1 answers

Aadya Singh 5 years, 8 months ago

Amalgam is an alloy in which one metal is mercury....

ANSWER

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