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Describe dalton atomic theory

Posted by Aditya Vir Singh 5 years, 11 months ago

1 answers

Meghna Thapar 5 years, 10 months ago

Dalton’s theory is the basic theory about the nature of matter. According to his theory, all matter, whether a solid, liquid or gas or an element, compound or mixture, is composed of small particles called atoms.

The Postulates of Dalton's Atomic Theory:

All matter is made up of very tiny particles called atoms.
Atoms are indivisible particles, which can neither be created nor destroyed in a chemical reaction.
The atoms of a given element are identical in mass and chemical properties.
Atoms of different elements have different masses and chemical properties.
Atoms combine in the ratio of small whole numbers to form compounds.
The relative number and types of atoms are constant in a given compound.

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ANSWER

Write the ratio of progeny RRyy × rrYY (Round &green) × (wrinkled & yellow)

Posted by Sumaiya Afroj 5 years, 11 months ago

CBSE > Class 10 > Science

3 answers

Broken Heart ? #Girl 5 years, 11 months ago

3:1

1Thank You

Sumaiya Afroj 5 years, 11 months ago

But howw????

1Thank You

Keshav Charan 5 years, 11 months ago

9:3:3:1

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ANSWER

In evolutionary terms, can we say that among Bacteria, spiders, fish, chimpanzee have a better design? Why or why not?

Posted by Sumaiya Afroj 5 years, 11 months ago

CBSE > Class 10 > Science

0 answers

ANSWER

Why does saturated compounds do not form double or triple bond?

Posted by Jesika Turel 5 years, 11 months ago

CBSE > Class 10 > Science

1 answers

Rishabh Gupta 5 years, 11 months ago

because saturated compound single tra-valent compound and and unsaturated compound not fix valent .

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ANSWER

In a synapse chemicals signal is transmitted from:

Posted by Tulsi Kumari 5 years, 11 months ago

CBSE > Class 10 > Science

3 answers

Keshav Charan 5 years, 11 months ago

It transfers from end of nerve terminal to dendrites of another neuron

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Khushi Rathore 5 years, 11 months ago

Neuron's nerve ending to other neuron's dendrite

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Aadya Singh ? 5 years, 11 months ago

Axonal end of one neuron to the dentritic end of another neuron...

2Thank You

ANSWER

What prevents backflow of blood inside the heart during contraction

Posted by Tulsi Kumari 5 years, 11 months ago

CBSE > Class 10 > Science

5 answers

Khushi Rathore 5 years, 11 months ago

Valve.... Prevent backflow of blood inside the heart during contaction

1Thank You

*Shirin? * 5 years, 11 months ago

Valves

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Poonam Jaiswal 5 years, 11 months ago

Valve

1Thank You

Shraddha ☺️☺️ 5 years, 11 months ago

Valve is the answer

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Aadya Singh ? 5 years, 11 months ago

Valve...

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ANSWER

Name the physical quantity which is same in all the resistor when they are connected in series

Posted by Tulsi Kumari 5 years, 11 months ago

CBSE > Class 10 > Science

2 answers

Mohammad. Kaif Ali 5 years, 11 months ago

Current

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Aadya Singh ? 5 years, 11 months ago

Current...

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ANSWER

Write two advantage associated with water harvesting at the community level

Posted by Tulsi Kumari 5 years, 11 months ago

CBSE > Class 10 > Science

0 answers

ANSWER

Why is electrolysis of brine called 'chlor-alkali process ? write the chemical equation involved in this process .

Posted by Rahul Shah 5 years, 11 months ago

CBSE > Class 10 > Science

1 answers

Aadya Singh ? 5 years, 11 months ago

Electrolysis of brine is called chlor-alkali because of the product formed chlor for chlorine and alkali for NaOH.
2NaCL + 2H2O ------>2NaOH + Cl2 + H2

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ANSWER

Function of planthormone a. Gibberellins b. Auxins c. Abscisic acid

Posted by Rahul Shah 5 years, 11 months ago

CBSE > Class 10 > Science

2 answers

Khushi Rathore 5 years, 11 months ago

Auxin- promote fruit growth Gibberellin- promote dormancy in plant Abscisic- it is growth inhibiter of plant promote breaking of dormancy

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Shraddha ☺️☺️ 5 years, 11 months ago

Gibrellin and promotes growth of plants whereas ABA inhibits growth of plants.Its a growth inhibiter.

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ANSWER

What is sympathetic Nervous system

Posted by Riya Lyngdoh 5 years, 11 months ago

CBSE > Class 10 > Science

1 answers

Meghna Thapar 5 years, 10 months ago

Sympathetic Autonomic Nervous System: It is the part of the autonomic nervous system, located near the thoracic and lumbar regions in the spinal cord. Its primary function is to stimulate the body’s fight or flight response. It does this by regulating the heart rate, rate of respiration, pupillary response and more.

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ANSWER

What happens to light when it dispersed

Posted by Abinash Anand 5 years, 11 months ago

CBSE > Class 10 > Science

2 answers

*Shirin? * 5 years, 11 months ago

Different colours bend at different angles according to the incident ray..red bends the least and violet bends the most..and so the spectrum is seen

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⛩️Singh Emperor? (Believe In Study) 5 years, 11 months ago

All the components of white light take different paths.......

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ANSWER

What are non-ohmic devices

Posted by Dipendra Singh 5 years, 11 months ago

CBSE > Class 10 > Science

3 answers

Khushi Rathore 5 years, 11 months ago

Diode is the non ohmic device

0Thank You

Dr. Shreyas Samarth 5 years, 11 months ago

The devices which don't obeys ohm's law.....are non ohmic devices...

2Thank You

⛩️Singh Emperor? (Believe In Study) 5 years, 11 months ago

Non ohmic device are the device in which the voltage is not linearly varied with current............ example.. diode?

1Thank You

ANSWER

Define atmospheric reaction

Posted by Ashish Maurya 5 years, 11 months ago

CBSE > Class 10 > Science

3 answers

Khushi Rathore 5 years, 11 months ago

When the refraction taking place in atmosphere then it is known atmospheric refraction. Or we can say atmospheric refraction is the deviation of light.

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Alok Goutam 5 years, 11 months ago

The refraction which is caused by atmosphere, called atmospheric refraction

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⛩️Singh Emperor? (Believe In Study) 5 years, 11 months ago

Atmospheric refraction is the deviation of light or other electromagnetic wave as it passes through atmosphere due to variation in air density. Due yo this astronomical object appear as above from actually they are...........

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ANSWER

हर पल, हर दुआ में..... दुआ में तुझे याद करते हैं..... 100-100 बार करते हैं...... मिले हर जनम तू ही हमको...... यही फ़रियाद करते हैं...... दुआ में तुझे याद करते हैं..... १००-१०० बार करते हैं...... ........... Good Morning ????

Posted by Dr.Ravi _♥️??? ....... 5 years, 11 months ago

CBSE > Class 10 > Science

5 answers

Dr.Ravi _♥️??? ....... 5 years, 11 months ago

Good morning all of you

1Thank You

___ Alone _____ 5 years, 11 months ago

Gud morning

1Thank You

*Shirin? * 5 years, 11 months ago

?sleepin

1Thank You

*Shirin? * 5 years, 11 months ago

Good morning?sry ill com a bit later

1Thank You

⛩️Singh Emperor? (Believe In Study) 5 years, 11 months ago

Good morning

1Thank You

ANSWER

Formula of cyclo hexane

Posted by Shraddha ☺️☺️ 5 years, 11 months ago

CBSE > Class 10 > Science

6 answers

Shraddha ☺️☺️ 5 years, 11 months ago

bt at last we get hex'ane' then why it is not alkane

0Thank You

Mohammad. Kaif Ali 5 years, 11 months ago

C6H12

0Thank You

Khushi Rathore 5 years, 11 months ago

It is Alkene... Which have the Formula C6H12...

0Thank You

Shraddha ☺️☺️ 5 years, 11 months ago

Is it an alkane??

1Thank You

Alok Goutam 5 years, 11 months ago

C6 H12

1Thank You

Astha . 5 years, 11 months ago

C6H12

2Thank You

ANSWER

किसी को फूलों में ना बसाओ........ फूलों में सिर्फ सपने बस्ते है....... अगर बसाना है तो दिल में बसाओ....... क्युकी दिल में सिर्फ अपने बस्ते है....... ??❣️

Posted by Dr.Ravi _♥️??? ....... 5 years, 11 months ago

CBSE > Class 10 > Science

17 answers

___ Alone _____ 5 years, 11 months ago

Vo meko sum nahi aa rha tha...vo dekh rahi thi iss app pr..☺️

2Thank You

___ Alone _____ 5 years, 11 months ago

0Thank You

___ Alone _____ 5 years, 11 months ago

Sab gye????

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___ Alone _____ 5 years, 11 months ago

Hiii

1Thank You

Dr.Ravi _♥️??? ....... 5 years, 11 months ago

Hmm broo..... But i want to... Walk, Run and Fly together...?... Bro ???

1Thank You

⛩️Singh Emperor? (Believe In Study) 5 years, 11 months ago

Life me bahot obstacle hai bhai.....???

1Thank You

⛩️Singh Emperor? (Believe In Study) 5 years, 11 months ago

Sirf yaaded hi basti hai ???

1Thank You

Dr.Ravi _♥️??? ....... 5 years, 11 months ago

Toh phir unki yaade basti h broo??❣️?

1Thank You

⛩️Singh Emperor? (Believe In Study) 5 years, 11 months ago

Lakin jab apne dur hote hai na bro......phir koi nahi basta???

1Thank You

Dr.Ravi _♥️??? ....... 5 years, 11 months ago

No problem... Broo

1Thank You

⛩️Singh Emperor? (Believe In Study) 5 years, 11 months ago

Sorry for being late bhai.......

1Thank You

Dr.Ravi _♥️??? ....... 5 years, 11 months ago

Hello PK....

1Thank You

⛩️Singh Emperor? (Believe In Study) 5 years, 11 months ago

1Thank You

Bharat Mandal 5 years, 11 months ago

Nice

1Thank You

? ... 5 years, 11 months ago

????

1Thank You

*Shirin? * 5 years, 11 months ago

Oooooooo

1Thank You

Shreya ?? 5 years, 11 months ago

Wah wah!!

1Thank You

ANSWER

Lab manual questions come in exam this year

Posted by Jayant Rajawat 5 years, 11 months ago

CBSE > Class 10 > Science

1 answers

Ashish Maurya 5 years, 11 months ago

Yes

1Thank You

ANSWER

What is sexual intercourse and why is it necessary.

Posted by Paul Richard 5 years, 11 months ago

CBSE > Class 10 > Science

1 answers

Abhay Chauhan 5 years, 8 months ago

Because of aash

0Thank You

ANSWER

What are parasites?

Posted by Nishant Singh 5 years, 11 months ago

CBSE > Class 10 > Science

2 answers

Khushi Rathore 5 years, 11 months ago

These are those organism which takes energy form host body (another living organism) without killing them

1Thank You

Aadya Singh ? 5 years, 11 months ago

The organism which obtain its food from the body of another organism without killing them...

3Thank You

ANSWER

What is a gall bladder

Posted by Tulsi Kumari 5 years, 11 months ago

CBSE > Class 10 > Science

3 answers

Khushi Rathore 5 years, 11 months ago

It is situated in liver of small intestine where bile juice is stored and secret by liver which makes food alkaline...

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Singhania Sir Gamer 5 years, 11 months ago

It is a reservoir of bile which is produce by liver cells.

2Thank You

Paul Richard 5 years, 11 months ago

It is one of the digestive organ present in our body

2Thank You

ANSWER

Define atomic radius ? Give its unit

Posted by Kavitha Manoj 5 years, 11 months ago

CBSE > Class 10 > Science

3 answers

Paul Richard 5 years, 11 months ago

Atomic radii are often measured in angstroms (Å), a non-SI unit: 1 Å = 1 × 10 −10 m = 100 pm. ... (a) The covalentatomic radius, r cov, is half the distance between the nuclei of two like atomsjoined by a covalent bond in the same molecule, such as Cl 2.

1Thank You

Yogita Ingle 5 years, 11 months ago

Atomic radius is the distance from the centre of the nucleus to the outermost shell containing electrons. In other words, it is the distance from the center of the nucleus to the point up to which the density of the electron cloud is maximum.

2Thank You

Padam Singh 5 years, 11 months ago

The distance between nucleus and outer most cell of the atom

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ANSWER

What are the important questions regarding variations and heredity?

Posted by Dilpreet Sandhu 5 years, 11 months ago

CBSE > Class 10 > Science

0 answers

ANSWER

Sun appears reddish early in the morning and evening why

Posted by Yadav Ji 5 years, 11 months ago

CBSE > Class 10 > Science

1 answers

Yogita Ingle 5 years, 11 months ago

Light from the Sun near the horizon passes through a thicker layer of air and a larger distance in the Earth’s atmosphere before reaching our eyes.
However, light from the Sun overhead has to travel a lesser distance. At noon, the Sun appears whitish or yellowish as only little blue and violet light are scattered. However, near the horizon, most of the blue light and shorter wavelengths are scattered. Thus, the Sun appears reddish in colour during sunrise or sunset.

1Thank You

ANSWER

If life gives you hundread reason to breakdown and cry show life than you have thousands reasons to smile and laugh ???? keep smiling

Posted by ? ... 5 years, 11 months ago

CBSE > Class 10 > Science

26 answers

Aadya Singh ? 5 years, 11 months ago

Jane do...aapko nhi samajh me aayega ????

1Thank You

Aadya Singh ? 5 years, 11 months ago

Nhi...aap galat ho...unhone Ankesh name likha hua h...??

1Thank You

Aadya Singh ? 5 years, 11 months ago

Kya diksha...?? ????

2Thank You

Aadya Singh ? 5 years, 11 months ago

Oh...to aapne apna name kyu ni likha...????

2Thank You

? ... 5 years, 11 months ago

Ya mai apna naam likh rha tha mera to galti se maine suggested word ke list me se anekesh ko choose krr liya.

2Thank You

? ... 5 years, 11 months ago

Boy

2Thank You

Aadya Singh ? 5 years, 11 months ago

Itni badi galti..?????...to phir aap kaun ho..??? Ya to itna hi bta do...aap girl ho ki boy...mujhe to ye bhi confusion h..??

2Thank You

? ... 5 years, 11 months ago

Vo galti se ho gya tha l am not anekesh nor ankesh

2Thank You

Aadya Singh ? 5 years, 11 months ago

Pta nhi...spelling to yhi likhi thi ????

2Thank You

Aadya Singh ? 5 years, 11 months ago

Hey....Your name is Anekesh..??? ??

2Thank You

Aadya Singh ? 5 years, 11 months ago

Hlo shreya 2...?Shreya se baat karni h to bolo bulati hu..?

2Thank You

Shreya ?? 5 years, 11 months ago

Bye...

1Thank You

___ Alone _____ 5 years, 11 months ago

Bye! Phone m battery nahi h..?

0Thank You

___ Alone _____ 5 years, 11 months ago

m Bhi mst

0Thank You

Shreya ?? 5 years, 11 months ago

Mst...aap batao

1Thank You

___ Alone _____ 5 years, 11 months ago

Kese ho ap sab??

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Shreya ?? 5 years, 11 months ago

Hlo suhana

1Thank You

___ Alone _____ 5 years, 11 months ago

Ankesh bro , aadya aur piku ki yeh hi id hh..?

0Thank You

___ Alone _____ 5 years, 11 months ago

Hii...piku , Aadya , sahil , akshay and shreya...???

1Thank You

___ Alone _____ 5 years, 11 months ago

☺️☺️

1Thank You

⛩️Singh Emperor? (Believe In Study) 5 years, 11 months ago

?????

2Thank You

Aadya Singh ? 5 years, 11 months ago

Mera smile kuch jyada ho gye kya..??? ????

2Thank You

Aadya Singh ? 5 years, 11 months ago

????

2Thank You

Sahil Singh 5 years, 11 months ago

..........

1Thank You

Bhumika Sharma 5 years, 11 months ago

Choosa

2Thank You

Shreya ?? 5 years, 11 months ago

???

3Thank You

ANSWER

What is 3r?explain with examples

Posted by Yadav Ji 5 years, 11 months ago

CBSE > Class 10 > Science

3 answers

Paul Richard 5 years, 11 months ago

3R refers to reduce reuse and recycle

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Yogita Ingle 5 years, 11 months ago

The three R's used to save the environment are Reduce, Recycle and Reuse.

Reduce: This means that we should use the resources judiciously and check their misuse. We use less of the natural resources by cutting down on those practices which lead to their wastage. We should save electricity by switching off unnecessary lights and fans. We should save water by repairing leak taps. We can reduce the use of LPG by making use of solar cooker for cooking food.

Recycle: Recycle means that we should collect the used and discarded plastic, paper, glass and metal items and recycle this material to make required things instead of synthesizing fresh plastic, paper, glass or metal.

Reuse: This is even better than recycling because it save the energy which is spent at recycling a products no energy is required during reuse.We should use the same things again. For example envelopes can be used by reversing them

2Thank You

Mohamed Abdullah Suhaib 5 years, 11 months ago

Reduce, Reuse, Recycle

0Thank You

ANSWER

What is mass communication ????

Posted by ? ... 5 years, 11 months ago

CBSE > Class 10 > Science

3 answers

Khushi Rathore 5 years, 11 months ago

Mass communication- it is mostly used by government for awareness of people About various schemes or national programs. And by this we can communicate with several people at a same time and share our views and ideas with many people.. Eg. Radio, internet, television, etc

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Yogita Ingle 5 years, 11 months ago

Mass communication: Mass communication provides entertainment as well as information to a large number of people at the same time. As they are means of communication with the masses, they are known as mass communication.

Means (like electronic media) which covers large number of people at the same time. Different means of communication are radio, television, films and internet, newspapers and magazines.

4Thank You

Aadya Singh ? 5 years, 11 months ago

Process of exchanging messages with large number of people...

3Thank You

ANSWER

If you want to achive something that you have never achive you have to do something that you have never done ???

Posted by ? ... 5 years, 11 months ago

CBSE > Class 10 > Science