CBSE Board | Homework Help

1) Smell of burning sulphur. 2) On initial heating, green crystals change to white powder. 3) On further heating, the white powder then changes to reddish brown precipitate. 4) Crackling sound obtained. 5) Beaker becomes hot. (any two.)

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Harsh Raj Pandey 4 years, 8 months ago (8085140)

Two onservations are 1 Smell of sulphur or rubber is evolved 2 ferric oxide is formed which is reddish brown.

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Jasleen Gill 4 years, 8 months ago (8726093)

Do you mean " List any two observations when ferrous sulphate is heated un a dry test tube"?

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The following real numbers have decimal expansion as given below. In each case decide whether they are rational order not. IFSC they are you,and of the form p/q,what can you say about the prime factors of q?

Posted by Bhawna Garg 4 years, 8 months ago (3888780)

CBSE > Class 10 > Mathematics

2 answers

Adithya Dev A 4 years, 8 months ago (10643926)

q should be of the form 2^n * 5^n.

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Jasleen Gill 4 years, 8 months ago (8726093)

Write complete question please. ??

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What is aggressions? Define its types.

Posted by Divyanshu Mishra 4 years, 8 months ago (5867697)

CBSE > Class 12 > Physical Education

1 answers

Anurag Saral 4 years, 8 months ago (11095825)

Aggression is defined as any form of behaviour directed towards the goal of harming or injuring another live being who is motivated to avoid such treatment. Types:- 1. Hostile Aggression: Its main aim is to cause harm or injury to the opponent. 2. Impulsive Aggression: It is not planned and often takes place in heat of the moment. 3. Instrumental Aggression: Its main aim is to achieve a goal by using aggression.

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ANSWER

Dr. Sadao and servants were only partly loyal to their country. Comment.

Posted by Chiranjeev Sona 4 years, 8 months ago (7507333)

CBSE > Class 12 > English Core

1 answers

Vaishnavi Nanaware 4 years, 8 months ago (7092246)

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What can we say about a²-b².If a>b and a&b are two odd prime numbers.

Posted by Kajal Rohilla., 31 4 years, 8 months ago (9851297)

CBSE > Class 10 > Mathematics

3 answers

Adithya Dev A 4 years, 8 months ago (10643926)

Considering the following condition, we can arrive to a conclusion that a^2 - b^2 would always be multiple of 8.

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Kajal Rohilla., 31 4 years, 8 months ago (9851297)

Pls explain

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Nancy Singh 4 years, 8 months ago (7440384)

Ftutf

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Magnetic lines of force always form closed loops. Why?

Posted by Abhinav Arul 4 years, 8 months ago (5007533)

CBSE > Class 12 > Physics

1 answers

Gaurav Bagga 4 years, 8 months ago (3086880)

Because magetic monopoles does not exist hence they form closed loops

3 Thank You

ANSWER

Bhai sshab ke updesho ko sunkar lekhak kya sochne laagta tha

Posted by Shatakshi Gupta 4 years, 8 months ago (8121684)

CBSE > Class 10 > हिंदी ए

0 answers

ANSWER

Show that 6^n-5^n always end with digit 1.

Posted by Kajal Rohilla., 31 4 years, 8 months ago (9851297)

CBSE > Class 10 > Mathematics

1 answers

Adithya Dev A 4 years, 8 months ago (10643926)

6^n, where n is any positive integer, always ends with 6. Eg :- 6^2 = 36, 6^3 = 216, etc. Whereas, 5^n , for any value of n, always ends in 5. Eg :- 5^2 = 25, 5^4 = 625, etc. Therefore, since 6 - 5 is always equal to one, the no 6^n - 5^n always ends with one.

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Send computer network types notes

Posted by Kartik Panchal 4 years, 8 months ago (11125506)

CBSE > Class 08 > Computer

0 answers

ANSWER

Difference between the vaporisation and the evaporissation

Posted by Mayank Satsangi 4 years, 8 months ago (1227491)

CBSE > Class 09 > Science

2 answers

Mahi Mishra 4 years, 8 months ago (11034974)

Vaporisation can change the state of matter from a solid or liquid to a gas. During Evaporation the liquid state of matter is turned directly into a gas. ... As for evaporation , only the top level of water is turned into gas. When vapourisation occurs, molecules could come from below the surface when the liquid is boiling.

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Amit Raj 4 years, 8 months ago (9330473)

When matter directly changes from liquid state to gaseous it uses more energy it is called vaporisation but in the case of evaporisation, liquid changes slwly from the surface of the liquid and it requires less energy to chnges its state to gas.

2 Thank You

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I give a test

Posted by Amit Majithiya 4 years, 8 months ago (11125316)

CBSE > Class 05 > English

2 answers

Pratikshya Bhoi 4 years, 7 months ago (10125715)

I got a test

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Amit Majithiya 4 years, 8 months ago (11125316)

Mango doli

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Represent √19 on the number line

Posted by Laiba Arshad 4 years, 8 months ago (9143665)

CBSE > Class 09 > Mathematics

0 answers

ANSWER

Make the greatest and the smallest 4-digit numbers using any four different digits

Posted by Meraj Meraj 4 years, 8 months ago (11123821)

CBSE > Class 06 > Maths (OLD)

1 answers

Preksha Singh 4 years, 8 months ago (11125829)

1234 4321

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How to say you are beautiful in German

Posted by Deekshu ☺ 4 years, 8 months ago (11097620)

CBSE > Class 08 > German

2 answers

Richa Kumari 4 years, 6 months ago (11332956)

Schön- Beautiful

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Rachna Bhagat 4 years, 8 months ago (9668098)

You are beautiful = Du bist schön

1 Thank You

ANSWER

Log bhed kyu palte he

Posted by Jaswil Gandhi 4 years, 8 months ago (10742203)

CBSE > Class 05 > हिंदी

2 answers

Ritika Vedwal 4 years, 8 months ago (10627227)

Rakhwali ke liye

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Ritika Vedwal 4 years, 8 months ago (10627227)

Urhi

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ANSWER

How many eggs give **** in one day

Posted by Yash Kumr 4 years, 8 months ago (11110837)

CBSE > Class 05 > EVS - Looking Around

2 answers

Raja 1234 4 years, 8 months ago (9328845)

Ants live a smell on the ground other ants follow the smell

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Chinmay Nimbarte 4 years, 8 months ago (10230317)

How ants can move in a line

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"Brushing your teeth twice is a well saying". Justify the statement.

Posted by Jasleen Gill 4 years, 8 months ago (8726093)

CBSE > Class 10 > Science

1 answers

Adithya Dev A 4 years, 8 months ago (10643926)

It maintains the pH of our mouth and controls the production of acids. When the pH of our mouth goes below 5.5, the bacteria in the mouth gets activated and acids are produced. These acids neutralise calcium phosphate (more accurately, calcium hydroxyapetite), a basic salt which makes up our enamel. This leads to tooth decay. Therefore, to prevent this situation, Brushing twice in a day is advised.

2 Thank You

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How plant produce carbon dioxide in night time and how it consume oxygen

Posted by Debasish Satapathy 4 years, 8 months ago (10792516)

CBSE > Class 10 > Science

2 answers

Sanskar Shukla 4 years, 8 months ago (10156168)

Plants makes their glucose in the presence of sunlight ,water and carbon dioxide which is sufficient for the plant during day time but during the night the stomata of the plant starts to close and oxygen enters with the help of diffusion and carbon dioxide's excretion also involves it.

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Ananya Jaiswal 4 years, 8 months ago (10175091)

During daylight hours, plants take in carbon dioxide and release oxygen through photosynthesis, and at night only about half that carbon is then released through respiration. ... At night, they use oxygen and release carbon dioxide.

1 Thank You

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Key is used to open the help in microsoft power point 2010

Posted by Sneha Jaiswal 4 years, 8 months ago (11125371)

CBSE > Class 06 > English (OLD)