CBSE > Class 10 > Science | CBSE Board | Homework Help

The placenta is a disc-like structure and is embedded in the uterine wall. It provides nutrition and oxygen to the fetus from the mother's blood and carries out foetal waste removal.

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Preodic table

Posted by Gourav Rai 3 years, 1 month ago

CBSE > Class 10 > Science

2 answers

Jagdish Shukla 3 years, 1 month ago

Hey friendship👭

1Thank You

Aleeza Siddique 3 years, 1 month ago

Hey

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ANSWER

Name the hormone which increases heartbeat rate when we get frightened.

Posted by Aleeza Siddique 3 years, 1 month ago

CBSE > Class 10 > Science

3 answers

Diksha Yadav 3 years, 1 month ago

Adrenaline

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Saumya Singh 3 years, 1 month ago

Adrenaline

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Vījây Trípãthî 3 years, 1 month ago

Endocrine 👍

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What is insulin?

Posted by Aleeza Siddique 3 years, 1 month ago

CBSE > Class 10 > Science

3 answers

Diksha Yadav 3 years, 1 month ago

Is a type of hormone which cantrol sugar level

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Saumya Singh 3 years, 1 month ago

Insulin is a type of harmone realised by pancreas it works when sugar level of body went up it works to reduce sugar level to normal .

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Suryansh Tripathi 3 years, 1 month ago

Insulin is a hormone that lowers the level of glucose (a type of sugar) in the blood. It's made by the beta cells of the pancreas and released into the blood when the glucose level goes up, such as after eating. Insulin helps glucose enter the body's cells, where it can be used for energy or stored for future use.

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Name the movements which are also known as sleep movements.

Posted by Aleeza Siddique 3 years, 1 month ago

CBSE > Class 10 > Science

1 answers

Shivam Garg 3 years, 1 month ago

Nyctinastic movements- These are also called sleeping movements because they occur in response to a change in day and night as well as the change in temperature. For example, the leaves of leguminous plants fold up and close in the evening and open in the morning.

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Explain how the human body response when adrenaline is secreted into blood.

Posted by Aleeza Siddique 3 years, 1 month ago

CBSE > Class 10 > Science

1 answers

Saumya Singh 3 years, 1 month ago

Adrenaline prepared body for emergency when adrenaline is realised in human body person feel nervous.For example :when we said lie our body realise adrenaline and we feel fear .

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How do nerve impulses travel in the body ?explain.

Posted by Aleeza Siddique 3 years, 1 month ago

CBSE > Class 10 > Science

1 answers

Anshika Sharma 3 years, 1 month ago

Nerve impulses begin in a dendrite, move toward the cell body, and then move down the axon. A nerve impulse travels along the neuron in the form of electrical and chemical signals. The axon tip ends at a synapse. A synapse is the junction between each axon tip and the next structure.

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How are the brain and spinal cord protected?

Posted by Aleeza Siddique 3 years, 1 month ago

CBSE > Class 10 > Science

1 answers

Saumya Singh 3 years, 1 month ago

Brain has three layers called meninges. First layer called dura matter ,second was archnoid matter and third was pia matter . Between second and third layer there was space called subarachnoid space in which a fluid is present called cerebrospinal fluid which protects brain and spinal cord.It act as shock absorber to protect brain and spinal cord.

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What is cerebrospinal fluid? What is its function?

Posted by Aleeza Siddique 3 years, 1 month ago

CBSE > Class 10 > Science

2 answers

Harsh Yadav 3 years, 1 month ago

Cerebrospinal fluid present in the brain which protect us from the shock

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Harshitha Harshitha 3 years, 1 month ago

The fluid which is present in the brain.It protect us from danger situation.

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ANSWER

What will happen if all the decomposers are removed from the ecosystem

Posted by Palak Srivastava 3 years, 1 month ago

CBSE > Class 10 > Science

1 answers

Aleeza Siddique 3 years, 1 month ago

If all the decomposers are removed from the ecosystem the invironmet is of death bodies and there are no any decomposers which can decompose the bodies.and get disturbed due to removal of decomposer from the ecosystem.

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ANSWER

What is resistivity and write it's S.I unit

Posted by Aleeza Siddique 3 years, 1 month ago

CBSE > Class 10 > Science

1 answers

Rdm 😈 3 years, 1 month ago

The resistivity of a material is the resistance of a wire of that material of unit length and unit area of cross-section. Its S.I. unit is ohm-metre.

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What do mean by tubectomy?

Posted by Aleeza Siddique 3 years, 1 month ago

CBSE > Class 10 > Science

1 answers

Preeti Dabral 3 years, 1 month ago

A little portion of the fallopian tube is cut out or tied up during a tubectomy, a sterilization procedure. Tubal sterilization is another name for it. It is used to sterilize women or provide them with long-term contraception.

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What is the Full form of CFCs

Posted by Aleeza Siddique 3 years, 1 month ago

CBSE > Class 10 > Science

3 answers

Preeti Dabral 3 years, 1 month ago

Chlorofluorocarbon: The full form of CFC is Chlorofluorocarbon. Any of the numerous halocarbon compounds made from carbon, hydrogen, chlorine, and fluorine are called chlorofluorocarbon.

1Thank You

Dhwani Panchal 3 years, 1 month ago

Cloro floro carbon

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Mahi Bhambri 3 years, 1 month ago

Chlorofluorocarbon

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ANSWER

What is the meaning of ( Implications of balanced chemical equation )

Posted by Tanya Mehta 3 years, 1 month ago

CBSE > Class 10 > Science

4 answers

Tanya Mehta 3 years ago

Ohk...☺️

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Rajat Negi 3 years, 1 month ago

Balanced equation has equal number of atoms on both the sides of the equation. Balanced equation is required to keep the Law of conservation of mass true.

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Jagdish Shukla 3 years ago

Bhumika shingvi happy new year🎉🎊🎇

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Bhumika Shingvi 3 years, 1 month ago

If there is a eq given like Cu+O2 = CUO We have to balance this equation like in this eq O is having 2 atoms and CU have no atoms with it so we will add no. To balance it Like 2Cu+O2 = 2CuO So this is the balanced chemical equation

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ANSWER

Is vena cava only vein which provides deoxyenated blood ?

Posted by Bal Ganesha 3 years, 1 month ago

CBSE > Class 10 > Science

4 answers

Aarti Mahato 3 years, 1 month ago

Only pulmonary vein carries oxygenated. Vena Cava carries de-oxygenated blood

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Jagdish Shukla 3 years, 1 month ago

Yes

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Pearl S 3 years, 1 month ago

False

4Thank You

Tanya Mehta 3 years, 1 month ago

1Thank You

ANSWER

sir what is EMF and SUPER CONDUCTOR in electricty chapter class 10???

Posted by Madhav Mullick 3 years, 1 month ago

CBSE > Class 10 > Science

3 answers

Jagdish Shukla 3 years, 1 month ago

EMF (Elector motive force)

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Bal Ganesha 3 years, 1 month ago

Sorry, Please note that in 3rd line that's not curse actually that is cause . Thank you

2Thank You

Bal Ganesha 3 years, 1 month ago

EMF ( Electro motive force ) • It is the maximum potential difference between two terminals of a battery . • It is a curse . When EMF is applied , the current flows in the circuit . • It is a work done by source in taking a unit charge once around the complete circuit .

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ANSWER

Nacl Hcl H2O

Posted by Jagdish Shukla 3 years, 1 month ago

CBSE > Class 10 > Science

4 answers

Jagdish Shukla 3 years, 1 month ago

Xxx

0Thank You

Jagdish Shukla 3 years, 1 month ago

Happy new year friends

1Thank You

Karan Mehra 3 years, 1 month ago

Sodium chloride. Hydrogen chloride. Water

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Jagdish Shukla 3 years, 1 month ago

Hii

4Thank You

ANSWER

What is a championship

Posted by Jagdish Shukla 3 years, 1 month ago

CBSE > Class 10 > Science

0 answers

ANSWER

How does CO2 from the air enter the leaves of a plant to be used in photosynthesis?

Posted by Sameeksha Dangi 3 years, 1 month ago

CBSE > Class 10 > Science

3 answers

Ritik Yadav 3 years, 1 month ago

CO2 enter the leaves by stomata

1Thank You

Mmm .... 3 years, 1 month ago

CO2 enter from air into the leaves through stomata

1Thank You

Vinay Jain 3 years, 1 month ago

By stomata

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ANSWER

What is mean by coordination

Posted by Tanish Wagh 3 years, 1 month ago

CBSE > Class 10 > Science

1 answers

Krish Jaat 3 years, 1 month ago

The organisation work in a regular manner to his best

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ANSWER

Which is the longest cell in human body

Posted by Baaacha Baacha 3 years, 1 month ago

CBSE > Class 10 > Science

5 answers

Arif Parray 3 years, 1 month ago

Neron

1Thank You

Kaver Mokashi 3 years, 1 month ago

Neuron

0Thank You

Krish Jaat 3 years, 1 month ago

Neron is the biggest cell in our body

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Pearl S 3 years, 1 month ago

Neuron

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Raunak Kumar 3 years, 1 month ago

The longest cell in the human body is the 'neuron' with a length of 90cm-100cm, linking the central nervous system (brain and spinal cord) to other parts of the body.

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ANSWER

How many hair on our body?

Posted by Aashish Singh 3 years, 1 month ago

CBSE > Class 10 > Science

4 answers

Vinay Jain 3 years, 1 month ago

Depends upon person

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Bhumi Gothwal 3 years, 1 month ago

Uncountable

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Raunak Kumar 3 years, 1 month ago

Nobody knows.

4Thank You

Baaacha Baacha 3 years, 1 month ago

Uncountable

3Thank You

ANSWER

On which plant mendel work ? Why he choose only that plant

Posted by Aadivya Mathur 3 years, 1 month ago

CBSE > Class 10 > Science

5 answers

Aryan Kumar 3 years, 1 month ago

Pea plant ( pisum sativum) because it is easily available. And grow

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Baaacha Baacha 3 years, 1 month ago

Pea plant as because its contrasting characters

1Thank You

Pearl S 3 years, 1 month ago

Because he found a contrasting characteristics on pea plant

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Aadivya Mathur 3 years, 1 month ago

But why he chose that plant

1Thank You

Aadivya Mathur 3 years, 1 month ago

Pea plant 🌿

2Thank You

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What is net power?

Posted by Ankit Class 3 years, 1 month ago

CBSE > Class 10 > Science

1 answers

Harsh Patil 3 years, 1 month ago

2Thank You

ANSWER

Bhai kis kis ke school me pre board start ho gya h

Posted by Shubham Keshari 3 years, 1 month ago

CBSE > Class 10 > Science

5 answers

Arnold Richard 3 years, 1 month ago

Bro Jan 2 se first pre board hai humara

0Thank You

Raunak Kumar 3 years, 1 month ago

Khatam bro😁 from delhi

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Pearl S 3 years, 1 month ago

Khatam.....

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Prince Bajetha 3 years, 1 month ago

Bro mere hone wale h

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Kunal Sharma 3 years, 1 month ago

Ha Bhai

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ANSWER

Make a binary fission in amoeba and budding is yeast and hydra with the help of diagram

Posted by Cn.Nabish _Jn 3 years, 1 month ago

CBSE > Class 10 > Science

1 answers

Preeti Dabral 3 years, 1 month ago

3Thank You

ANSWER

What is resistant?

Posted by Aditya Kumar 3 years, 1 month ago

CBSE > Class 10 > Science

4 answers

Krish Jaat 3 years, 1 month ago

Which can oppose the current flow

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Shreyansh Gupta 3 years, 1 month ago

Resistant is the power of a device called resistance which is used to oppose the flow of electricity or to low the speed of current flowing through the particular conductor

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Aanya Sharma 3 years, 1 month ago

Resistance is a optsrical in the electric circuit. Resistance is measured in ohms.

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Ⓚⓐⓥⓨⓐ 🦋 3 years, 1 month ago

❥Ꭺɴꮪꮃꭼꭱ࿐ Resistance is a measure of the opposition to current flow in an electrical circuit. Resistance is measured in ohms, symbolized by the Greek letter omega (Ω).

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ANSWER

Science ka sample paper

Posted by Preeti Maravi 3 years, 1 month ago

CBSE > Class 10 > Science

4 answers

Rupali Shukla 3 years ago

You can purchase educart or oswal company because these are the best book for practice in market

0Thank You

Bhumi Bisht 3 years, 1 month ago

Bhai search on google or on sample papers book

0Thank You

Krish Jaat 3 years, 1 month ago

On CBSE guide

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Xyz Xyz 3 years, 1 month ago

A gya ha

4Thank You

ANSWER

Left hand thumb rule

Posted by Rehan Rahim 3 years, 1 month ago

CBSE > Class 10 > Science

2 answers

Rajat Negi 3 years, 1 month ago

There is no thing as left hand thumb rule. Maxwell's right hand thumb rule states if we hold a conductor in our hand and keep the direction of the thumb in the direction of the current then the direction of our curved finger will point towards the direction of the magnetic field lines. If the current flows upward then the magnetic field line flows anti-clockwise and if the current flows downwards the the magnetic field lines flows clockwise.

0Thank You

Harjit Singh 3 years, 1 month ago

Fleming

1Thank You

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