CBSE Board | Homework Help

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

Ask Question

CBSE, JEE, NEET, CUET

Question Bank, Mock Tests, Exam Papers

NCERT Solutions, Sample Papers, Notes, Videos

Install Now

What is meant by reaction rate ?

Posted by Venkat Balaji 4 years, 6 months ago (10237414)

CBSE > Class 12 > Chemistry

3 answers

Bhumika Agrawal 4 years, 5 months ago (9859375)

It is also known as rate of reaction it is defined as duck increasing the concentration of product per unit time and to decrease in the reactant Per unit time it is depend on order reaction

0 Thank You

Venkat Balaji 4 years, 5 months ago (10237414)

- dr / dt

0 Thank You

Kabita Sharma 4 years, 6 months ago (7140792)

Reaction rate is defined as ratio of change in product/reactant concentration with respect to change in time. Rate=dR\dt or Rate =dP/dt

1 Thank You

ANSWER

Write two example of the progress of separatation like handpicking thershing winnowing sieving sedimenation decantation

Posted by Krishna Sahu 6A 4 years, 6 months ago (11431784)

CBSE > Class 06 > Science (OLD)

3 answers

Divyansh Sati 4 years, 5 months ago (10830242)

Eg. Of handpicking- seperating stones from grains, seperating fruits and vegetables

0 Thank You

Sasmita Patra 4 years, 5 months ago (11436600)

I have answers

1 Thank You

Eksha Singh 4 years, 6 months ago (10138043)

Which school do you study

1 Thank You

ANSWER

Muskaan ketham savdhan

Posted by Alman Akhtar 4 years, 6 months ago (11364474)

CBSE > Class 08 > Sanskrit

1 answers

Purvika Phogat 4 years, 5 months ago (11442624)

Hlo mam

1 Thank You

ANSWER

The most commonly used natural indicater is which

Posted by Jagjeet Singh 4 years, 6 months ago (9672744)

CBSE > Class 07 > Science

4 answers

Arunima Mishra 4 years, 5 months ago (11455183)

Turmeric and china rose

0 Thank You

Anuska Mukherjee 4 years, 5 months ago (9760415)

Litmus

0 Thank You

Vaishnavi Yadav 4 years, 6 months ago (8967761)

Turmeric and china rose

4 Thank You

Anshika Shukla 4 years, 6 months ago (11194743)

Haldi China rose

4 Thank You

ANSWER

If A and B are symmetric matrix prove that AB - BA is a slew symmetric matrix.

Posted by Ayushi Tripathy 4 years, 6 months ago (9285119)

CBSE > Class 12 > Mathematics

1 answers

Tanvir Singh 😊😀😊 4 years, 6 months ago (9625185)

If A and B are symmetric then A=A'and B=B' AB-BA=A'B'-B'A' =(BA)'-(AB)' =(BA-AB)' =-(AB-BA)' Hence AB-BA is skew symmetric....

3 Thank You

ANSWER

The vapour pressure of water is 12.3kPa at 300k. Calculate the vapour pressure of 1 molar solution of a solute in it.

Posted by Rishav Raj 4 years, 6 months ago (11228424)

CBSE > Class 12 > Chemistry

1 answers

Kabita Sharma 4 years, 6 months ago (7140792)

Molar mass of water is=18 g/mol No. Of Mole present in 1000g of water 1000/18=55.56 mol Mole fraction(Xi)= amount of constituent in moles/Total amount of constituents in a mixture in moles Xi=1/1+55.6 = 0.0177 As we know that relative lowering in vapour pressure is equal to the mole fraction of the solute. p1-p\p=X 12.3-p/12.3=0.0177 p=12.08

0 Thank You

ANSWER

What do the family plan during spring

Posted by Darshan Rohit 4 years, 6 months ago (9778664)

CBSE > Class 05 > English

1 answers

Ritik Prajapati 4 years, 6 months ago (9356459)

2 Thank You

ANSWER

Name some operating system used nowdays

Posted by Alan Chacko 4 years, 6 months ago (11364563)

CBSE > Class 07 > Computer

2 answers

Jahaan Kachhadiya 4 years, 5 months ago (11432813)

Windows,linux,mac

0 Thank You

Sailender Sailender 4 years, 5 months ago (11314359)

Hmm Dan my x is a bit of a problem with the other one that I have to do with the other side and the other side of the world and

0 Thank You

ANSWER

My Elder brother

Posted by Ajay Kumar 4 years, 6 months ago (11321859)

ICSE & ISC > Class 05 > Others

5 answers

Harshita Singh 4 years, 1 month ago (11083937)

Chota bahia

0 Thank You

Hiral Singar Singar 4 years, 3 months ago (11915918)

Thanks

0 Thank You

Rathinam K 4 years, 3 months ago (11823442)

What your name

0 Thank You

Akash Magar 4 years, 4 months ago (11724136)

123

1 Thank You

Bhupender Maurya 4 years, 5 months ago (11602801)

Who was to meet ?

4 Thank You

ANSWER

In city there are 45 schools, each school has 38 rooms and each has 98 chairs and tables. How many chairs and tables will be there in total

Posted by Harsh Mandhani 4 years, 6 months ago (11213599)

CBSE > Class 06 > Maths (OLD)

2 answers

Bhola Prasad Projapoti 4 years, 5 months ago (11236469)

There are 167580 chairs and table

1 Thank You

Niharika Vihol 4 years, 5 months ago (11191471)

There are 1,67,580 chairs and tables in total.

3 Thank You

ANSWER

What makes people in the fields dance with happiness?

Posted by Moumit Chakraborty 4 years, 6 months ago (11430483)

CBSE > Class 06 > English (OLD)

1 answers

Srijan Reddy 4 years, 6 months ago (11378305)

Enjoyment

0 Thank You

ANSWER

Why did the poet stand there for a long

Posted by Nihashini N 4 years, 6 months ago (11407447)

CBSE > Class 09 > English Lang & Lit. (184)

2 answers

Khushi Singh 4 years, 5 months ago (11442308)

The poet stand there for a long as he was thinking that which road must he choose for the journey and which road will be best for him.

1 Thank You

Leksha Vats 4 years, 5 months ago (11441912)

Because he wanted to make sure that his choice is correct not take such an important decision in a haste

0 Thank You

ANSWER

VAX is example of

Posted by Surya Pratap Singh Ix B 4 years, 6 months ago (11430655)

CBSE > Class 09 > Computer Applications (165)

2 answers

Bhoomi Dubey 4 years, 5 months ago (11345293)

CISC

0 Thank You

Khushi Singh 4 years, 5 months ago (11442308)

Chemical but reversible change

3 Thank You

ANSWER

2y+12y-432=0 factor

Posted by Priyanshi Rawat 4 years, 6 months ago (4680764)

CBSE > Class 10 > Mathematics

2 answers

Gurpreet Paul 4 years, 6 months ago (10653377)

2y²+36y-24y-432=0 2y(y+18)-24(y+18)=0 (Y+18) (2y-24) =0 Y=-18 or y =12

4 Thank You

Tofik Khan 4 years, 6 months ago (11432034)

30.85

3 Thank You

ANSWER

Give e.g of the un symbol

Posted by Garv.R Choudhary 4 years, 6 months ago (9897796)

CBSE > Class 05 > General Knowledge

4 answers

Ansh Raj 4 years, 5 months ago (11413613)

Untitled Nation

0 Thank You

Anita Marndi 4 years, 5 months ago (11447833)

united nations

1 Thank You

Manyata Panda 4 years, 5 months ago (11121796)

United Nations...

1 Thank You

Chirag Aswal 4 years, 6 months ago (11424490)

United Nations

3 Thank You

ANSWER

IT IS IN THE CENTRE OF THE TOWN IT IS RIGHT OR WRONG GIVE ANS PLEASE

Posted by Vihaan Chokshi 4 years, 6 months ago (11425201)

CBSE > Class 07 > English

1 answers

Arshi Gupta 4 years, 5 months ago (11499741)

Right

0 Thank You

ANSWER

Assignment

Posted by Vanshika Jain 4 years, 6 months ago (11431342)

CBSE > Class 07 > Social Science

0 answers

ANSWER

8)WhytheFPTPsystem (Firstpointthepostsystem),wasadoptedin India?

Posted by Tanpreet Singh 4 years, 6 months ago (9744792)

CBSE > Class 11 > Political Science

0 answers

ANSWER

How many Islands on Andaman and Nicobar Islands

Posted by Garv.R Choudhary 4 years, 6 months ago (9897796)

CBSE > Class 05 > General Knowledge

2 answers

Anita Marndi 4 years, 5 months ago (11447833)

300

1 Thank You

Manyata Panda 4 years, 5 months ago (11121796)

300

2 Thank You

ANSWER

How would you react to the statement that the Electronegativity of N on Pauling scale is 3.0 in all the nitrogen compounds?

Posted by Ayush Sharma {Xl-A} 4 years, 6 months ago (11427026)

CBSE > Class 11 > Chemistry

1 answers

Palak Shukla 4 years, 6 months ago (11256731)

It is not possible to have value of 3.0 for electronegativity of N in all its compound .

1 Thank You

ANSWER

lekhika koh dekhkar ki Hakka bakka kyu hoo gaya?

Posted by Revati Shah 4 years, 6 months ago (11310441)

CBSE > Class 09 > हिंदी ब

1 answers

Shivi Agrawal 4 years, 3 months ago (11970341)

की को लेखिका की हिम्मत पर आश्चर्य हो रहा था। लेखिका को अभी ऊपर की चढ़ाई करनी थी लेकिन वह थकान की परवाह किये बिना अन्य साथियों की तलाश में नीचे आ गई थीं। लेखिका ने सबके लिए चाय भी बनाई थी। इसलिए की हक्का बक्का था।

0 Thank You

ANSWER

ಸಾಹಿತ್ಯದ ಪ್ರಕಾರಗಳು??

Posted by Aditi Patil 4 years, 6 months ago (11341354)

CBSE > Class 08 > Regional Language

2 answers

Puneetha Patil 3 years, 5 months ago (13253088)

Nanagu beku

0 Thank You

Chandan Sahu 4 years, 3 months ago (9670315)

Hii you are for jnv mahasamund

1 Thank You

ANSWER

Globe latitude and heat and zone

Posted by Abhinandan Verma 4 years, 6 months ago (9718901)

CBSE > Class 06 > Social (OLD)

1 answers

Sonal Sahu 4 years, 6 months ago (11432930)

0 Thank You

ANSWER

Siri Kannada text book pdf

Posted by Aditi Patil 4 years, 6 months ago (11341354)

CBSE > Class 08 > Regional Language

1 answers

Padmini Kulkarni 3 years, 5 months ago (11481910)

ಪಾಠ

3 Thank You

ANSWER

Which is the lost city

Posted by Garv.R Choudhary 4 years, 6 months ago (9897796)

CBSE > Class 05 > General Knowledge

4 answers

★Alwin★ ★★★★★★ 4 years, 5 months ago (11445244)

Ganskndidbwkwjaitstddyksdtjzstksyststkstkstkdyodkhdylflyfykdulugjwjtwrjjqjtwtjwtjwtjwtajtstjtjsjtsykstjdtmsgnsgdjdywjttsigtfjdygksttlstrhgfhgkfgdhfndurdgsyudrqyrysrwyeewgaftwswtfwtfwtfwtfwtf

1 Thank You

Ananya Ramteke 4 years, 5 months ago (11493971)

Machu Picchu......

2 Thank You

Arnav Kumar 4 years, 5 months ago (11449681)

Panckula

2 Thank You

Manyata Panda 4 years, 5 months ago (11121796)

Machu pichu.....

2 Thank You

ANSWER

Simplify 5⁴x2–³

Posted by Mohanty Trupti Ranjan 4 years, 6 months ago (11390019)

CBSE > Class 09 > Mathematics

1 answers

Shalu Kumari 4 years, 5 months ago (11437871)

625×1/8 78.125

0 Thank You

ANSWER

The common Era of Harappan civilization has been__________

Posted by Palak Sharma 4 years, 6 months ago (10561987)

CBSE > Class 12 > History

2 answers

Anshika Bhatnagar 4 years, 5 months ago (10437986)

Indus valley civilization

2 Thank You

Khushi Kamboj?❤ 4 years, 5 months ago (11141331)

Indus valley civilazation.

4 Thank You

ANSWER

Where feos sand come from

Posted by Hamlyn Harish 4 years, 6 months ago (11431149)

CBSE > Class 03 > EVS

0 answers

ANSWER

Why do mens run faster than wemons?

Posted by V. Ridhanya Catherine 4 years, 6 months ago (10102344)

CBSE > Class 09 > Social Science

0 answers

ANSWER

What is rain harvasying

Posted by Shivam Sharma 4 years, 5 months ago (2135930)

CBSE > Class 10 > Computer Applications (165)

1 answers

Sia ? 4 years, 5 months ago (6945213)

Rainwater harvesting is the collection and storage of rain, rather than allowing it to run off. Rainwater is collected from a roof-like surface and redirected to a tank, cistern, deep pit, aquifer, or a reservoir with percolation, so that it seeps down and restores the ground water.

0 Thank You

ANSWER