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What is contraceptive method? Explain

Posted by Anurag Singh 4 years, 9 months ago

CBSE > Class 10 > Science

2 answers

Adithya Dev A 4 years, 9 months ago

Methods which control fertility in human beings are called contraceptive methods. They help in controlling the population, preventing unwanted pregnancies and also protects the health of the mother. They can be either MECHANICAL (IUCD, diaphragm, cervical caps, etc.), CHEMICAL (oral contraceptive pills), or even SURGICAL (Vasectomy and Tubectomy)

Mayank Kumar Modi 4 years, 9 months ago

contraceptive method have been devised to avoid pregnancy. methods of contraceptive: 1. barrier method:condom,diaphragm etc. 2.chemical method:oral pills. 3.IUCD:COPPER-t. 4.surgical method:vasectomy-cutting and binding of vas deferens.;and tubectomy-cutting and binding of fallopian tube.

ANSWER

What is placenta? Mention it's function.

Posted by Anurag Singh 4 years, 9 months ago

CBSE > Class 10 > Science

3 answers

Jaspreet Kaur 4 years, 9 months ago

The intimate connection between mother and foetus is called placenta Functions : 1. Used to provide nourishment to embryo 2. Carry waste material to outside 3. Helps to exchange gases like O2 and CO2 4. It acts as a barrier

Rohan Rauniyar 4 years, 9 months ago

The process of attachment of embryo on uterus is called placenta. And it provides nourishment of fitus and aslo carry waste product..

Adithya Dev A 4 years, 9 months ago

A disc shaped structure formed during the implantation of embryo on the uterine walls is called placenta. It is responsible for transportation of materials between mother and growing child. It is through this structure that nutrients and other essential substances move from mother to child and nitrogenous wastes from child to mother.

ANSWER

What do you mean by twinkling of star

Posted by Anurag Singh 4 years, 9 months ago

CBSE > Class 10 > Science

2 answers

Anurag Singh 4 years, 9 months ago

Light coming from star some time fainter and dim

Priyanshu Jangid 4 years, 9 months ago

When light is coming from star them due to atmospheric refraction it starts twinkling

ANSWER

How white light split many colour passes through glass prism? Which light has more bent and why?

Posted by Anurag Singh 4 years, 9 months ago

CBSE > Class 10 > Science

1 answers

Rohan Rauniyar 4 years, 9 months ago

Dispersion occur . Violet because it has less wavelength...

ANSWER

What is the colour of universal indicator paper when deep into wet soap?

Posted by Atul Kumar 4 years, 9 months ago

CBSE > Class 10 > Science

5 answers

Adithya Dev A 4 years, 9 months ago

Purple/Violet.

Mansi Kadian 4 years, 9 months ago

Dark blue

Rohan Rauniyar 4 years, 9 months ago

Purple

Smruti Rekha Sahoo 4 years, 9 months ago

Dark blue

Siddharth Dubey 4 years, 9 months ago

Your head

ANSWER

Calculate the no. Of atoms of hydrogen atom present in 3.6g of glucose

Posted by Vikram Sharma The Buddy 4 years, 9 months ago

CBSE > Class 10 > Science

1 answers

Atul Kumar 4 years, 9 months ago

1.44528×10²¹

ANSWER

All plant give out oxygen during day and carbon dioxide during night do you agree with this statement? give reason?

Posted by Jaishree Choyal 4 years, 9 months ago

CBSE > Class 10 > Science

3 answers

Mansi Kadian 4 years, 9 months ago

In day the of sunlight ..

Adithya Dev A 4 years, 9 months ago

During daytime, in the presence of sunlight, photosynthesis takes place. So, at this time, CO2 is taken in and O2 is given out. But, at night, there is no sunlight. So, CO2 is given out (respiration).

Atul Kumar 4 years, 9 months ago

No you just write opposite of it

ANSWER

How will you conclude that the same potential difference exist across three resistors connected in parallel arrangement to a battery explain it with the help of a circuit diagram write any two advantages of parallel connection in domestic electric circuit (5marks)

Posted by Maheep Thugzz 4 years, 9 months ago

CBSE > Class 10 > Science

1 answers

Adithya Dev A 4 years, 9 months ago

The two advantages of parallel connection are:- 1) Even if one device gets damaged, the other devices will never be affected. 2) Different devices can draw different current.

ANSWER

Why there is residual amount of air present in the lungs?

Posted by Tushar Sadyan 4 years, 9 months ago

CBSE > Class 10 > Science

1 answers

Tanvi @1201 4 years, 9 months ago

The residual volume functions to keep the alveoli open even after maximum expiration. In healthy lungs, the air that makes up the residual volume is utilized for continual gas exchange to occur between breaths.

ANSWER

John Dalton law

Posted by Simmi Fagna 4 years, 9 months ago

CBSE > Class 10 > Science

0 answers

ANSWER

Why does sky appear dark instead of blue to an astronaut??

Posted by Dev Baliyan 4 years, 9 months ago

CBSE > Class 10 > Science

5 answers

Rishika Malu 4 years, 9 months ago

There will no scattering of light.Earth has no atmosphere

Anand Sah 4 years, 9 months ago

Due to absence of atmospheric particals in the space astronauts are able to see balck atmosphere instead of blue.

Trisha Singh 4 years, 9 months ago

Because at a very high altitude the scattering is not prominent at such height ..

Tanishq Yaduvanshi 4 years, 9 months ago

Because there is no atmosphere in outer space that can sunlight.As no sunlight scattered, there is no scatering happens and blue light not reach on his eyes that's why the sky appear dark istead of blue.

Maheep Thugzz 4 years, 9 months ago

Because at a very high altitude the scattering is not prominent at such height ..

ANSWER

On what rule is inheritance based

Posted by Bhomik Sanwal 4 years, 9 months ago

CBSE > Class 10 > Science

3 answers

Adithya Dev A 4 years, 8 months ago

The laws of inheritance:- 1) Law of Dominance. 2) Law of Segregation. 3) Law of Independent Assortment.

Priyanshi Yadav 4 years, 9 months ago

Inheritance based on DNA

Unbreakable Gamer 4 years, 9 months ago

Law of inheritance

ANSWER

An element X has atomic number 17 a To which period of the modern periodic table will it belong b What is the valency of the element c Write the formula of the compound formed when it combines with sodium? (3marks)

Posted by Maheep Thugzz 4 years, 9 months ago

CBSE > Class 10 > Science

4 answers

Maheep Thugzz 4 years, 9 months ago

Thank you ?

Smruti Rekha Sahoo 4 years, 9 months ago

Metal X is chlorine Group - 17, period - 3 Valency - 3 and compound is Nacl...

Maheep Thugzz 4 years, 9 months ago

Please give me full answer

Dev Baliyan 4 years, 9 months ago

Period - 3 Valency- 3+ Compound formula - NaX ( NaCl)

ANSWER

Why do aquatic animals breathe faster than the Terrestrial organisms?

Posted by Tanvi @1201 4 years, 9 months ago

CBSE > Class 10 > Science

3 answers

Unbreakable Gamer 4 years, 9 months ago

Because the oxygen dissolved in water is less as compared to oxygen present in environmentTerrestrial organisms(Human beings, Animals,etc) obtain oxygen directly through the open atmosphere while aquatic organisms get the oxygen which are dissolved so, to meet the requirement of oxygen aquatic organisms respire/breath at faster rate.

Anand Sah 4 years, 9 months ago

Terrestrial organisms(Human beings, Animals,etc) obtain oxygen directly through the open atmosphere while aquatic organisms get the oxygen which are dissolved so, to meet the requirement of oxygen aquatic organisms respire/breath at faster rate.

Bhomik Sanwal 4 years, 9 months ago

Because the oxygen dissolved in water is less as compared to oxygen present in environment

ANSWER

Define Refraction of light?

Posted by ? ?? 4 years, 9 months ago

CBSE > Class 10 > Science

3 answers

Anand Sah 4 years, 9 months ago

Refraction of light is a phenomenon of light in which light rays bend while traveling through obliquely (not normal) rarer medum to denser medium and vice versa..

Simmi Fagna 4 years, 9 months ago

Refraction is the bending of a wave when it enters a medium where its speed is different.

Tanvi @1201 4 years, 9 months ago

Refraction is the change in direction of a wave passing from one medium to another or from a gradual change in the medium. Refraction of light is the most commonly observed phenomenon, but other waves such as sound waves and water waves also experience refraction.

ANSWER

What is the proper definition of respiration

Posted by Pooja V Reddy 4 years, 9 months ago

CBSE > Class 10 > Science

4 answers

Adithya Dev A 4 years, 8 months ago

The biochemical process by which glucose undergoes oxidation in the body of an organism to produce energy is called respiration.

Unbreakable Gamer 4 years, 9 months ago

Exchange of air between body and surrounding environment

Tanvi @1201 4 years, 9 months ago

Respiration is biochemical process in which cells of an organism obtain energy by combining Oxygen and glucose resulting in release of carbon dioxide ,water and ATP.

Yarra Pawni 4 years, 9 months ago

The breakdown of food in the prescence of energy

ANSWER

What is nutrirtion

Posted by Bhawan Kumar 4 years, 9 months ago

CBSE > Class 10 > Science

2 answers

Tanvi @1201 4 years, 9 months ago

Nutrition is the process to transfer source of energy from outside to the body of an organism for maintaining living substance required for proper growth and maintenance of living body.

Arvind J 4 years, 9 months ago

Nutrition is the process by which an organism takes food and utilizes it to get energy, for growth, repair, maintenance, etc. and then excreting the waste material from the body.

ANSWER

Explain the nature of covalent bond using the bond formation in CH2Cl2.

Posted by Om Kumar 4 years, 9 months ago

CBSE > Class 10 > Science

0 answers

ANSWER

Two resistor of 10Ω and 15Ω are connected in series to a battery of 6v . How can the values of current passing through them be compared?

Posted by Om Kumar 4 years, 9 months ago

CBSE > Class 10 > Science

4 answers

Taufeeque Sifat 4 years, 9 months ago

Well the resistors are connected in a series connection then the current would be same for them. You need to just find the equivalent resistance of them and calculate the current. Equivalent resistance = (10 + 15) Ω = 25 Ω So the current would be I = V/R = 6 V/25 Ω = .24 A So the current through both the resistors will be 0.24 A.

Anurag Singh 4 years, 9 months ago

Correct answer is 0.24 ampere

Siya Singhal 4 years, 9 months ago

R1=10ohm,R2=15ohm,v=6v Connected in series are the R=R1+R2=10+15=25ohm V=IR I=v/R I=6/25 I=1/2.4ampere

Suhani Rana 4 years, 9 months ago

R1=10 ohm R2=5 ohm V=6 v In series, Therefore R1+R2=R 10+5=15 ohm New R =15 ohm Since, V=IR I= V/R I= 6/15 I=2/5 I = 0.4A ans. Current is passing through them is 0.4 ampere

ANSWER

What are the symptoms of Mandels Effect?

Posted by Ayush Nayak 4 years, 9 months ago

CBSE > Class 10 > Science

0 answers

ANSWER

What is zyogot

Posted by Nitesh Yadav 4 years, 9 months ago

CBSE > Class 10 > Science

2 answers

Bhavna Raghav 4 years, 9 months ago

Fertilized egg

P 1 4 years, 9 months ago

Fertilized cell

ANSWER

Atomic no. And atomic mass Of sodium?

Posted by Anju Maurya 4 years, 9 months ago

CBSE > Class 10 > Science

5 answers

Musharraf Shaikh 4 years, 9 months ago

23

Uday Choudhury 4 years, 9 months ago

11 Atomic mass: 22.989769 u Symbol: Na Electron configuration: [Ne] 3s¹

Hardy Singh 4 years, 9 months ago

Atomic no 11

Anamika Gupta 4 years, 9 months ago

N mass -23

Anamika Gupta 4 years, 9 months ago

Atomic number-11

ANSWER

Explain why the planets do the twinkle....

Posted by Payal Chudhary 4 years, 9 months ago

CBSE > Class 10 > Science

3 answers

Mayank Sinha 4 years, 9 months ago

Planet's didn't twinkle mate ?

Malaika Sharma 4 years, 9 months ago

Planets are much closer to the earth and are seen as extended source. So, a planet may be considered as a collection of a large number of point-sized light sources. Although light coming from individual point-sized sources flickers but the total amount of light entering our eye from all the individual point-sized sources average out to be constant. Thereby, planets appear equally brighter and there is no twinkling of planets.

P 1 4 years, 9 months ago

Due to atmospheric refraction

ANSWER

The *** of children is determined by what they inherit from thier father and not thier mother.justify

Posted by Ansh Kumar Sharma 4 years, 9 months ago

CBSE > Class 10 > Science

3 answers

Aditya Jain 4 years, 9 months ago

It is true that the *** of the child is determined by what it inherits from the father.

Malaika Sharma 4 years, 9 months ago

It is true that the *** of the child is determined by what it inherits from the father.If it inherits X chromosome from the father,the child born will be a girl and if it inherits Y chromosome from the father,the child born will be a boy.Mother on the other has XX chromosome so she is not all resposible for the *** of the child.

Shreyas Patil 4 years, 9 months ago

The *** of child is determined by the pair of chromosomes from their parents mother ha xy chromosomes and father has xx chromosomes.if x chromosome from mother is released then there will be male child or if y chromosome is released from mother then there will be girl

ANSWER

How do oral contraceptives work ? what is their role?

Posted by Nisha Perween 4 years, 9 months ago

CBSE > Class 10 > Science

1 answers

Himanshu Verma 4 years, 9 months ago

The role of oral contraceptive is to avoid pregnancy.Oral contraceptive work on by imbalancing the *** harmone called estrogen and progesterone. And because it is taken in form of pills so it is called oral pills. Thanks

ANSWER

What is a twinkle star?

Posted by Susma Chatterjee 4 years, 9 months ago

CBSE > Class 10 > Science

4 answers

Priyanshi Yadav 4 years, 9 months ago

Due to atmospheric refraction

Smruti Rekha Sahoo 4 years, 9 months ago

Due to the atmosphere of reference

Malaika Sharma 4 years, 9 months ago

Kuch bhi..... Stars mein plasma hota hai thats why they appear to be twinle.??Wow Mr.Amar..... ?Stars appear to be twinkle due to atmospheric refraction.The light coming from the stars bends through different layers of atmosphere.As it passes through different layers of atmosphere,it bends several times and appear to be twinkle.

Amar Kumar Singh Singh 4 years, 9 months ago

Because the presence of Plasma

ANSWER

Define optical centre of a spherical lens?

Posted by Susma Chatterjee 4 years, 9 months ago

CBSE > Class 10 > Science

3 answers

Adithya Dev A 4 years, 9 months ago

A point on the spherical lens such that a ray of light passing through it suffers no deviation is called OPTICAL CENTER.

Prerna Jain 4 years, 9 months ago

Every spherical lens has a centre This centre is also known as optical centre

Sarangi Jayakumar 4 years, 9 months ago

Optical centre is the centre of a sphereical lens

ANSWER

Why length of food chain in an ecosystem is generally limited to three or four trophic levels ?

Posted by Susma Chatterjee 4 years, 9 months ago

CBSE > Class 10 > Science

2 answers

Anand Sah 4 years, 9 months ago

Due to decrease in energy at each trophic levels the length of food chain is less.

Jay Mangal 4 years, 9 months ago

The length of food chani in an ecosystem is only about 3-4 trophic leveles because of the 10% law . According to 10% law when we go through trophic levels the energy gets decreased in every trophic level

ANSWER

Difference between covalent bonds and ionic bonds

Posted by Muskan Singh 4 years, 9 months ago

CBSE > Class 10 > Science

3 answers

Smruti Rekha Sahoo 4 years, 9 months ago

Covalent bonds - The bond forming between two atoms by there are neutral shares electronic. Ionic bond - Metal +non metal = Ionic bond

Musharraf Shaikh 4 years, 9 months ago

Metal + nonmetal = ionic bond

Susma Chatterjee 4 years, 9 months ago

An ionic bond essentially donates an electron to the other atom participating in the bond, while electrons in a covalent bond are shared equally between the atoms. The only pure covalent bonds occur between identical atoms

ANSWER

About Arunachal pradesh and Meghalaya You all haven't get this project work???

Posted by Shristi Giri 4 years, 9 months ago

CBSE > Class 10 > Science

2 answers

Khushi Jugani 4 years, 9 months ago

Actually I have got manipur and nagaland as art integration project.

Payal Chudhary 4 years, 9 months ago

No.....not yet

ANSWER

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