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

(a) Green colour of FeSO4 disappears which means a change in state and colour occurs. (b) The reddish brown solid is formed and gas is generated during this process.

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What is the use of mucus in stomach

Posted by Lokesh Agarwal 21 hours ago

CBSE > Class 10 > Science

5 answers

Anjali Yadav 15 hours ago

It helps us to protect from its own secretion of hcl(hydrochloric acid)

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Anup Kumar 16 hours ago

Mucus protect the inner lining of the stomach and also regulate the Hydrochloric.acid

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Niza Khan 18 hours ago

Mucus helps to protect the inner lining of the stomach

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Sharesth Sharma 19 hours ago

It's helps to prevents further corrosion of stomach by the action of HCl and the acid only affects the bolus

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Janvi Jha 21 hours ago

Mucus help to prevent the stomach from hcl

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Is anything Deleted from Human Eye and colourful world for 2023 exam

Posted by @ £!D#@ 1 day, 1 hour ago

CBSE > Class 10 > Science

3 answers

@ £!D#@ 22 hours ago

What about twinkling of stars is it not deleted?

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@ £!D#@ 23 hours ago

Thank you

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Mahima Dubey 1 day ago

Yes, the last topic, i.e. 11.6.3. colour of the sun at sunrise and sunset.

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Can anyone tell me the reduced syllabus of Electricity and Magnetic effect of electric current

Posted by Himanshu Kushwaha 1 day, 3 hours ago

CBSE > Class 10 > Science

4 answers

Mahima Dubey 23 hours ago

One more thing electromagnetic induction

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Mahima Dubey 23 hours ago

Deleted syllabus of ch13: Electric motor Electric generator Fleming's right hand rule ( pg 235)

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Aarya Jain 1 day, 2 hours ago

Electric motor

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Himanshu Kushwaha 1 day, 3 hours ago

Answer me fast plsss

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Assertion:- in the given equation, X stands for 2 3Fe + X H2O ---》 Fe3O4 + 4H2 Reason;- to balance the given equation, the number of atoms of each element should be same on both the sides

Posted by Prathamesh Kharade 1 day, 5 hours ago

CBSE > Class 10 > Science

2 answers

Sumit Kumar 17 hours ago

X stands for 4 and both assertion and reason is correct

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Yashika Rathore 19 hours ago

X stands for 4 and both assertion and reason is correct

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what will happen if bile is remove from liver...??

Posted by Vishasvi Kumar Jha 1 day, 11 hours ago

CBSE > Class 10 > Science

4 answers

Aryan Indani 6 hours ago

The alkaline medium needed for small intestine to digest food will never recive and the convergence of fats globules will stop

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Harish Gaming Zone 1 day, 6 hours ago

Digestion of fats will be stopped

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M Ravi Teja 1 day, 7 hours ago

Answer vare

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M Ravi Teja 1 day, 7 hours ago

Draw the human brain

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What are carboxylic acids? Give the common names, IUPAC names and structural formula of first four members of the homologous series.

Posted by Md Farhan 1 day, 13 hours ago

CBSE > Class 10 > Science

3 answers

Aryan Indani 6 hours ago

No members are wrong

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Vishasvi Kumar Jha 1 day, 11 hours ago

hydrocarbon compounds in which a carboxyl group has substituted one or more of the hydrogen atoms in the hydrocarbon first four members are... Methanoic acid - HCOOH ethanoic acid - CH3COOH propanoic acid - C2H3COOH butanoic acid - C2H7COOH

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Vishasvi Kumar Jha 1 day, 11 hours ago

COOH - is Carboxylic acid structural formula

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A copper wire is of length l meter. The wire is bent into a circular coil to conduct current. What is the value of the magnetic flux of the coil?

Posted by Akshat Patel 1 day, 14 hours ago

CBSE > Class 10 > Science

1 answers

Daksh Rastogi 1 day, 14 hours ago

Bgwbziqk

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What is nucleus?

Posted by Chinmayi Prabhayya Patrimatha Chinmayi 1 day, 15 hours ago

CBSE > Class 10 > Science

1 answers

Chinmayi Prabhayya Patrimatha Chinmayi 1 day, 15 hours ago

It is a epicenter or brain of the cell bcoz it controls all the activities of cell

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What is brime solution

Posted by Aditya Rudraksha 1 day, 17 hours ago

CBSE > Class 10 > Science

2 answers

Sample Paper 13 hours ago

The aqueous solution of sodium chloride is known as brine solution

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Aditya Rudraksha 1 day, 17 hours ago

Can anyone tell

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What is salivary gland

Posted by Anurag Kumar 2 days, 6 hours ago

CBSE > Class 10 > Science

2 answers

Himanshu Kushwaha 1 day, 3 hours ago

The gland from where saliva is secreted and this saliva contain an enzyme called salivary amylase which help in converting starch into simple sugar

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Ayush Mishra 2 days, 1 hour ago

Salivary glands make saliva, which helps in digestion, keeps your mouth moist and supports healthy teeth.

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If a father have blood group o and mother have blood group A then it is possible that the child have blood group ab

Posted by Amresh Kumar Singh 2 days, 14 hours ago

CBSE > Class 10 > Science

4 answers

Harish Gaming Zone 1 day, 6 hours ago

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Ruhi 👀 1 day, 14 hours ago

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Aarya Vora 2 days, 4 hours ago

If the father's blood group is O, he has the genotype IOIO or (ii) . The mother has blood type AB, which means that her genotype would be IAIB. The possible combinations of these two groups would result in children having genotypes IAIO or IBIO, which would give them blood groups A or B respectively.

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Bliss Kedia 2 days, 9 hours ago

No it is not possible for the child to have AB since niether parents carry AB nor B. The new born is mostly to have A blood group as A is a dominant gene, though it is less likely for the new born to have O blood group since it's a recessive gene but it is possible in very few cases that O boold group is taken by the new born.

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What is the difference between internal relection and total internal relection?

Posted by Udyanshu Jakhar 2 days, 14 hours ago

CBSE > Class 10 > Science

1 answers

Bliss Kedia 2 days, 9 hours ago

Total Internal Reflection 1. Total Internal Reflection (TIR) happens when light travels from a denser medium to a lighter medium. 2. TIR arises only when some conditions are met. 3. All the light is reflected in total internal reflection. 4. In total internal reflection, the light intensity is higher, and the objects shine brighter than in ordinary reflection. 5. It happens only when particular conditions are met 6. Happens only in light rays 7. Example : Due to total internal reflection, diamonds sparkle. Internal Reflection 1. it is nothing but the phenomenon of light reflected inside a particular object which may be transparent or reflection 2. Happens in any conditions like whatever reflection medium ISS there irrespective if it is regular or irregular 3. Happens in all types of rays like UVs, Sound rays and many more 4. Example : Rainbow formation

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What is ligaments

Posted by Karan Gore 2 days, 14 hours ago

CBSE > Class 10 > Science

1 answers

Karan Gore 2 days, 14 hours ago

Ljbonj

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What is neutrilization

Posted by Jaswinder Kaur 2 days, 15 hours ago

CBSE > Class 10 > Science

4 answers

Wasim Rk 1 day, 16 hours ago

The reaction of acid + base to form salt and water is called neutrilization reaction.

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Dev Rao 1 day, 18 hours ago

When acid and base react together and form salt and water is called neutrilization

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Shanu Yadav 2 days, 6 hours ago

Acid+base=salt +water is a neutralization reaction

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Arka Prava Das 2 days, 15 hours ago

the reaction between an acid with a base, giving products as salt and water is called Neutralization reaction..

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Write the structure of the lens and state the role of cililary muscles in human eye

Posted by Hithu Mandavi 2 days, 17 hours ago

CBSE > Class 10 > Science

2 answers

Aryan Indani 6 hours ago

Human lens are converging lens they are jelly like and can accomodate the change in focal length hence ciliary muscles help in achieving the power of accomodation by changing shape of lens to change focal length

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Omya Aryan 2 days, 7 hours ago

Ciliary muscles helps to contract and adjust the eye lens to focus on any object.

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ANSWER

Is black pen allowed in boards

Posted by Pranjal Singh 2 days, 23 hours ago

CBSE > Class 10 > Science

2 answers

Ayush Kumar 2 days, 17 hours ago

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Ansh Sharma 2 days, 22 hours ago

Nope

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ANSWER

How can I score more in physics

Posted by Pranjal Singh 2 days, 23 hours ago

CBSE > Class 10 > Science

3 answers

¥@$H Upadhyay 2 days ago

First you will clear your concepts and do more practice also work on your maths when your base is clear of mathenatics your question is also correct

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Shanu Yadav 2 days, 6 hours ago

Do more and more practise of the topics you don't understood well

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Ansh Sharma 2 days, 22 hours ago

Jao or padhai kro

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Write the molecular formula of first 2 homologous series having functional group -COOH.

Posted by Astha Tiwari 3 days ago

CBSE > Class 10 > Science

2 answers

Aryan Indani 6 hours ago

Formic acid HCOOH acetic acid CH3COOH

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Chavi Mittal 2 days, 21 hours ago

H-COOH:- methanoic acid CH3COOH :- ethanoic acid

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If the image is at distance of 6 cm and the object is at 12 cm in front of the concave mirror, Calculate the magnification formed and the focal length of mirror

Posted by Pratiksha Singh 3 days, 1 hour ago

CBSE > Class 10 > Science

1 answers

Omya Aryan 2 days, 7 hours ago

Magnification is -2

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Why does not the planets twinkle like stars?

Posted by Thanvi Shetty 3 days, 6 hours ago

CBSE > Class 10 > Science

3 answers

Kajal Tomar 20 hours ago

What is heridity

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Astha Tiwari 3 days ago

Because planets are much closer to us than stars

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Vedika Singh 3 days, 3 hours ago

Hence, the amount of light which enters our eyes fluctuates from bright to faint. This is the “Twinkling effect of star”. But planets are much closer to us than stars, so they are not point-sized objects to our eye. Hence, the fluctuations have a negligible effect and they don't seem to twinkle.

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Baking soda is a mixture of

Posted by Umra Khan 3 days, 16 hours ago

CBSE > Class 10 > Science