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

No products in the cart.

Ask questions which are clear, concise and easy to understand.

Ask Question

the correct statement regarding the universal indicator is _______

Posted by Jitu Yadav 5 years, 10 months ago

CBSE > Class 10 > Science

1 answers

Meghna Thapar 5 years, 10 months ago

Universal indicator is a mixture of several indicators and shows different colours at different concentration of hydrogen ions in a solution.

ANSWER

Describe double circulation in human beings. Why is it necessary?

Posted by Anu Mevliwal 5 years, 10 months ago

CBSE > Class 10 > Science

2 answers

Rishab Anand 5 years, 10 months ago

Double circulation refers to passage of blood through the heart twice i:e once to the lungs(oxygenated blood) and from the lungs to body parts (deoxygenated blood) It is necessary to regulate the body temperature

Gaurav Seth 5 years, 10 months ago

During a single cycle blood goes twice in the heart which is known as double circulation. It is necessary in human being to separate oxygenated and de-oxygenated blood because this makes their circulatory system is more efficient and helps in maintaining constant body temperature.

ANSWER

Why precipitate are formed in some of the reaction especially in double displacement reaction

Posted by Aman Thakur 5 years, 10 months ago

CBSE > Class 10 > Science

2 answers

.... ... 5 years, 10 months ago

White

Innocent Boy 5 years, 10 months ago

Diff precipitate are formed with diff reactants . You are asking for❓❔

ANSWER

Explain Froth flotation method .

Posted by Sunanda Mandal 5 years, 10 months ago

CBSE > Class 10 > Science

1 answers

Sahil Sorkhi 5 years, 10 months ago

It is used for extraction of metals from their sulphide ores?

ANSWER

What are the three different type of pyramids explain three examples

Posted by Shubhanker Markam 5 years, 10 months ago

CBSE > Class 10 > Science

0 answers

ANSWER

What is the 101element in the periodic table??

Posted by Grahul 📒🎒📓📔🙇🙇🙇 Rahul 5 years, 10 months ago

CBSE > Class 10 > Science

2 answers

Grahul 📒🎒📓📔🙇🙇🙇 Rahul 5 years, 9 months ago

Md its Mendelevium

.... ... 5 years, 10 months ago

Md .. meldelvium

ANSWER

8 resultant resistance are connected in parallel and series with 2ohm .find total resistance

Posted by Deepika Keshari 5 years, 10 months ago

CBSE > Class 10 > Science

3 answers

Innocent Boy 5 years, 10 months ago

Hey jaya resultant is given in parallel , not each resistance

Jaya Duwani 5 years, 10 months ago

Resistance is 4ohm by 1/R=1/2+1/2+1/2+1/2+1/2+1/2+1/2+1/2 2Lcm & above 8. 8/2 =4ohm

Innocent Boy 5 years, 10 months ago

10 Ω

ANSWER

Kya koi batagki blie pen kya h

Posted by Isha Tyagi 5 years, 10 months ago

CBSE > Class 10 > Science

2 answers

S Boyz 5 years, 10 months ago

Blue pen chalega

?® @ |-| U |_ ? T |-| £ ?G ® £ @ T ♂? 5 years, 10 months ago

Kehena kya chahati hai ?

ANSWER

Why reproduction is importance in human life

Posted by Ankit Chaurasiya 5 years, 10 months ago

CBSE > Class 10 > Science

6 answers

Sahil Sorkhi 5 years, 10 months ago

For the continuity of life

S Boyz 5 years, 10 months ago

Regulating population

Siddharth Nelge 5 years, 10 months ago

Continuation of species

?® @ |-| U |_ ? T |-| £ ?G ® £ @ T ♂? 5 years, 10 months ago

Reproduction is necessary in human life for the continuation of species.

Dimple Bansal 5 years, 10 months ago

Reproduction is important for humans as it ensures the continuation of a humans on earth

Prakhar Verma 5 years, 10 months ago

1 mark answer If humans stop reproducing, then there will be no new generation of humans. As the older generation will die, the population will decrease drastically. This will lead to extinction of humans and homo sapiens. This is the reason why, reproduction is important.

ANSWER

Give chemical name, formula and one use of POP.

Posted by Nitin Tiwari 5 years, 10 months ago

CBSE > Class 10 > Science

4 answers

Piyush Garg 5 years, 10 months ago

Chemical name-Calcium Sulphate hemihydrate Formula-CaSo4.1/3 H20 Use-used by doctor for fracture bone

Tushar Agarwal 5 years, 10 months ago

calcium sulphate hemihydrate caso4.1/2h2o

Prakhar Verma 5 years, 10 months ago

Calcium Sulphate hemihydrate Formula CaSO4. (1/2)H2O

Khushi Pandey 5 years, 10 months ago

Calcium phosphate hemihydrate, cuso4.2H2o it is used for making statues etc..

ANSWER

Why does the sun appears reddish early in the morning

Posted by Piyush Kumar 5 years, 10 months ago

CBSE > Class 10 > Science

1 answers

Khushi Pandey 5 years, 10 months ago

Due to scattering of light

ANSWER

Give any two uses of baking soda along with reactions

Posted by Nitin Tiwari 5 years, 10 months ago

CBSE > Class 10 > Science

2 answers

Grahul 📒🎒📓📔🙇🙇🙇 Rahul 5 years, 10 months ago

It is used in making baking powder which is used for making cakes and bread etc.. It is used as an antacid.

Khushi Pandey 5 years, 10 months ago

Used as antacid and to extinguished fire

ANSWER

Define the fermentation

Posted by Leeza Yadav 5 years, 10 months ago

CBSE > Class 10 > Science

1 answers

Meghna Thapar 5 years, 10 months ago

Fermentation is a chemical process by which molecules such as glucose are broken down anaerobically.

ANSWER

How is ozone formed in upper atmosphere? State its importance. What is responsible for its depletion? Write one harmful effect of ozone depletion.

Posted by Parveen Bajaj 5 years, 10 months ago

CBSE > Class 10 > Science

1 answers

Gaurav Seth 5 years, 10 months ago

Ozone is formed in the upper atmosphere by the reaction of ultraviolet (UV) radiations on oxygen (O2)(O2) molecules.
Importance. The ozone layer acts as the ozone shield over the surface of the earth and absorbs the harmful ultraviolet radiations of the Sun and prevents them from reaching the earth's surface. The damaging effect of CFCs (Chlorofluorocarbons) is responsible for the depletion of ozone layer.
Harmful effects . The thining of ozone layer results in an incrase of UV-B radiation reaching the earth 's surface . This increase the incidence of cataract and skin cancer diminishing the immune system ' s function.

ANSWER

What isagland

Posted by Nayab Samnani 5 years, 10 months ago

CBSE > Class 10 > Science

1 answers

Sneha Kumari 5 years, 10 months ago

A gland is the organ which secrets enzymes and hormones that hleps in digestion and regulates our bodies metabolism respectively. GLANDS are of two types ::: • Endocrine gland. • Exocrine gland.

ANSWER

What are phytohormones? give their functions. name a few example of plant hormones.

Posted by Nitin Tiwari 5 years, 10 months ago

CBSE > Class 10 > Science

3 answers

Sahil Sorkhi 5 years, 10 months ago

I think ? ethylene is also a growth inhibitor plant ? hormone.

Sharda Chouhan 5 years, 10 months ago

Auxin,Gibberlins

?® @ |-| U |_ ? T |-| £ ?G ® £ @ T ♂? 5 years, 10 months ago

Auxin, cytokynin etc

ANSWER

If carbon Compound called organic compound so CCl4(carbon tetra chloride) not a organic compound why?

Posted by Mukesh Kumar Sah 5 years, 10 months ago

CBSE > Class 10 > Science

1 answers

Sneha Kumari 5 years, 10 months ago

CARBON TETRA CHLORIDE is a inorganic compound because it doesn't contain any C-H bond. And you should know that those carbon compound which contain C-H bond are called organic compounds.

ANSWER

How the strength of basic solution be increased?

Posted by Nitin Tiwari 5 years, 10 months ago

CBSE > Class 10 > Science

1 answers

Sahil Sorkhi 5 years, 10 months ago

By increasing the concentration of H+ ions.

ANSWER

Translate the following statements into balanced chemical equation:(i) sodium metal react with water to give sodium hydroxide and hydrogen gas.(ii) ammonium chloride solution is added to barium hydroxide solution to give ammonium Hydroxide and Barium Chloride.

Posted by Nitin Tiwari 5 years, 10 months ago

CBSE > Class 10 > Science

2 answers

Sahil Sorkhi 5 years, 10 months ago

??NH4Cl + Ba(OH)2 --------->NH4OH + BaCl2

Aadya Singh 5 years, 10 months ago

2Na + 2H2O -----> 2NaOH + H2

ANSWER

What do you understand by exothermic and endothermic reaction? explain with one example each.

Posted by Nitin Tiwari 5 years, 10 months ago

CBSE > Class 10 > Science

1 answers

Khushi Pandey 5 years, 10 months ago

Those reaction which evolved heat is known as exothermic C6h12o6+6o2-6co2+6h2o Those reaction which absorbed heat known as endothermic

ANSWER

define the following term:(i)Valency;(ii)Atomic size

Posted by Nitin Tiwari 5 years, 10 months ago

CBSE > Class 10 > Science

5 answers

Anmol Chaudhary 5 years, 10 months ago

Toh vo hii ho gya ye..but atomic size wala wrong h mera

Anmol Chaudhary 5 years, 10 months ago

Atomic size is the the atomic number of an element

Anmol Chaudhary 5 years, 10 months ago

Valency is number of electrons in shells

Aadya Singh 5 years, 10 months ago

Shell*

Aadya Singh 5 years, 10 months ago

The number of electrons in the outermost cell is called valency...
The distance between the center of nucleus of atom and its outermost cell is called atomic size..

ANSWER

What is micro evolution?does it help in evolution

Posted by Mayank Kamboj Kamboj 5 years, 10 months ago

CBSE > Class 10 > Science

1 answers

S Boyz 5 years, 10 months ago

In which the variation is very little

ANSWER

Split rings??

Posted by ]••´º´•» Ｄί?Ş?? «•´º´••[• 5 years, 10 months ago

CBSE > Class 10 > Science

36 answers

?® @ |-| U |_ ? T |-| £ ?G ® £ @ T ♂? 5 years, 10 months ago

Good morning Suhana ?

?® @ |-| U |_ ? T |-| £ ?G ® £ @ T ♂? 5 years, 10 months ago

Extremly sorry Suhana, but raat ho gayi thi to parents ne bulaya, or else i was going to chat with you. ?☺?

Killer Xmarty 5 years, 10 months ago

Hiii

♛ ❝Ѕυнαɴα❞ ♛ 5 years, 10 months ago

Ap gye?. ... Bye!

♛ ❝Ѕυнαɴα❞ ♛ 5 years, 10 months ago

Kya hua???

♛ ❝Ѕυнαɴα❞ ♛ 5 years, 10 months ago

Yes!!?

?® @ |-| U |_ ? T |-| £ ?G ® £ @ T ♂? 5 years, 10 months ago

Suhana!!

♛ ❝Ѕυнαɴα❞ ♛ 5 years, 10 months ago

Bye!! Gud morning

?® @ |-| U |_ ? T |-| £ ?G ® £ @ T ♂? 5 years, 10 months ago

Gn everyone ?????

Dr. Sanskari ?‍⚕️?‍⚕️❤⚘ 5 years, 10 months ago

Hii

?® @ |-| U |_ ? T |-| £ ?G ® £ @ T ♂? 5 years, 10 months ago

Kya GST??

Innocent Boy 5 years, 10 months ago

Gst diku bye

?® @ |-| U |_ ? T |-| £ ?G ® £ @ T ♂? 5 years, 10 months ago

I am Rahul?

?® @ |-| U |_ ? T |-| £ ?G ® £ @ T ♂? 5 years, 10 months ago

Thodi baate karte he na

Yashi .... 5 years, 10 months ago

Jago mat..so jaao..mai ja rhi..bye..gn..

?® @ |-| U |_ ? T |-| £ ?G ® £ @ T ♂? 5 years, 10 months ago

Haa jagran! ??

Yashi .... 5 years, 10 months ago

Jagran...?

?® @ |-| U |_ ? T |-| £ ?G ® £ @ T ♂? 5 years, 10 months ago

Padhai thik chl rahi hai na??

?® @ |-| U |_ ? T |-| £ ?G ® £ @ T ♂? 5 years, 10 months ago

Haa, me naya hu?

?® @ |-| U |_ ? T |-| £ ?G ® £ @ T ♂? 5 years, 10 months ago

Yes for the question u asked about jagran

Yashi .... 5 years, 10 months ago

no..mai toh bht days baad ai..isliye kiya msg..aap new ho..??

Yashi .... 5 years, 10 months ago

kya yes..?

?® @ |-| U |_ ? T |-| £ ?G ® £ @ T ♂? 5 years, 10 months ago

No, u said hi to me so i thought u want to say something

?® @ |-| U |_ ? T |-| £ ?G ® £ @ T ♂? 5 years, 10 months ago

Yes ?

Yashi .... 5 years, 10 months ago

About what..??

?® @ |-| U |_ ? T |-| £ ?G ® £ @ T ♂? 5 years, 10 months ago

Do u want to say something ??

Yashi .... 5 years, 10 months ago

ha..aap bhi jg rhe ho..?? ?

?® @ |-| U |_ ? T |-| £ ?G ® £ @ T ♂? 5 years, 10 months ago

Ab tak jaag rahi ho ?

Yashi .... 5 years, 10 months ago

hlo

?® @ |-| U |_ ? T |-| £ ?G ® £ @ T ♂? 5 years, 10 months ago

Hello Shreya?

Yashi .... 5 years, 10 months ago

hii...

?® @ |-| U |_ ? T |-| £ ?G ® £ @ T ♂? 5 years, 10 months ago

Suhana☺?

?® @ |-| U |_ ? T |-| £ ?G ® £ @ T ♂? 5 years, 10 months ago

Hii

♛ ❝Ѕυнαɴα❞ ♛ 5 years, 10 months ago

Hy

?® @ |-| U |_ ? T |-| £ ?G ® £ @ T ♂? 5 years, 10 months ago

??

?® @ |-| U |_ ? T |-| £ ?G ® £ @ T ♂? 5 years, 10 months ago

Uska kya

ANSWER

What would happen if the plasma membrane ruptures or breakdown

Posted by Shivam Kumar 5 years, 10 months ago

CBSE > Class 10 > Science

2 answers

Aadya Singh 5 years, 10 months ago

Btw...ye to 9th me tha ?

Aadya Singh 5 years, 10 months ago

It would leads to the exposure of components to the external environment and would ultimately results in cell death...

ANSWER

Important questions in 2020 board jo buss pass kr ske

Posted by Bhawani Singh 1980 5 years, 10 months ago

CBSE > Class 10 > Science

1 answers

♛ ❝Ѕυнαɴα❞ ♛ 5 years, 10 months ago

??pir ncert question answer krlo..aur chap padhlo

ANSWER

What is xnxx

Posted by Jatin Katiyar 5 years, 10 months ago

CBSE > Class 10 > Science

0 answers

ANSWER

All imp activity for 10 class biard 2020

Posted by Harsh Jain 5 years, 10 months ago

CBSE > Class 10 > Science

0 answers

ANSWER

Limitations of Mendeelev's Periodic Table !!!

Posted by Honey...?? #Girl 5 years, 10 months ago

CBSE > Class 10 > Science

14 answers

Honey...?? #Girl 5 years, 10 months ago

??

♛ ❝Ѕυнαɴα❞ ♛ 5 years, 10 months ago

??

Honey...?? #Girl 5 years, 10 months ago

Mene dekhte hi phchn liya tha ????

♛ ❝Ѕυнαɴα❞ ♛ 5 years, 10 months ago

Brainly se sikha h????

Honey...?? #Girl 5 years, 10 months ago

Thnx suhu .. Brainly zindabaad ??

♛ ❝Ѕυнαɴα❞ ♛ 5 years, 10 months ago

LIMITATIONS OF MANDEELEV'S PERIODIC TABLE:
1. He could not assign a correct position to hydrogen in the periodic table.
2. Position of isotopes of all the elements were not certain according to mendeleev's periodic table.
3. Atomic masses did not increase in a regular manner in going from one element to the next.So, it was possible to predict how many elements could be discovered between the two elements.
<Font color="black">______________❤️____________________

Honey...?? #Girl 5 years, 10 months ago

Hola suhu ....mere ques m aajao on brainly 2nd

♛ ❝Ѕυнαɴα❞ ♛ 5 years, 10 months ago

Hi??

Honey...?? #Girl 5 years, 10 months ago

Its ok aseem bro ?

Sahil Singh 5 years, 10 months ago

???????

Innocent Boy 5 years, 10 months ago

Sorry deep meko aata ni hai ye ques

Innocent Boy 5 years, 10 months ago

Bro ni sujal sis kaho

Sujal Jha 5 years, 10 months ago

Ya bro its given in NCERT...just go through it.☺

Tanya Garg 5 years, 10 months ago

Not given the correct position of hydrogen. Some elements were not in correct order of atomic mass

ANSWER

Clss 6th

Posted by Sagar Goswami 5 years, 10 months ago

CBSE > Class 10 > Science

2 answers

Sahil Singh 5 years, 10 months ago

???????

Honey...?? #Girl 5 years, 10 months ago

What

ANSWER

What is endothermic reaction?

Posted by Sarvan Rajput 5 years, 10 months ago

CBSE > Class 10 > Science

1 answers

23 Tejaswi 5 years, 10 months ago

The reaction in which heat is absorbed is known as endothermic reaction.

ANSWER

Page 458 of 2763

myCBSEguide App

myCBSEguide

Trusted by 1 Crore+ Students

Test Generator

Test Generator

Create papers online. It's FREE.

CUET Mock Tests

CUET Mock Tests

75,000+ questions to practice only on myCBSEguide app

Google Play

Download myCBSEguide App