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Vedika
Subject: Science
, asked on 7/2/18
if 80 g of nacl is added to 640 g of water. find the concentration
Answer
2
Vijaya Kowstubha T
Subject: Science
, asked on 7/2/18
whay does 5%of salt mean?
Answer
1
Vijaya Kowstubha T
Subject: Science
, asked on 7/2/18
if iron sulphate powder and carbon disulphate are mixed what happens
Answer
1
Vijaya Kowstubha T
Subject: Science
, asked on 7/2/18
for notibg down the melting point of ice,write the correct method of taking thermometer reading.
Answer
1
Suvam
Subject: Science
, asked on 26/1/18
57. (a) What are the postulates of Bohr's model of an atom?
(b) Show diagrammatically the electron distribution in Sodium, Lithium and Aluminium atoms.
Answer
1
Admya Maini
Subject: Science
, asked on 26/1/18
Solve this:
Q22. To verify the law of conservation of mass in a chemical reaction a student take known amount of solution of Barium Chloride in a small test tube which is hanged in sealed conical flask containing sodium sulphate solution the flask is slightly tilted so that the two solutions get mixed with each other and chemical reaction occur. What is the relation between masses of chemicals involved in a reaction?
Answer
2
Admya Maini
Subject: Science
, asked on 26/1/18
Prakhar sets up and operates for the determination of boiling point of distilled water in Shimla he recorded the boiling point as 97 degree Celsius instead 100 degree celsius what is the reason of lower boiling point.
Answer
1
Tejas Goyal
Subject: Science
, asked on 24/1/18
Solve this:
Three students A, B, C prepared mixture using chalk powder, common salt and milk respectively in water. Whose mixture :
1) Would not leave the residue on filter paper after filtration ?
2) Would show tyndall effect ?
3) Would give transparent/clear solution ?
Answer
1
Vedika
Subject: Science
, asked on 23/1/18
find the concentration if 35 g of salt is added to 300g of water
Answer
3
Krithi ♀️
Subject: Science
, asked on 21/1/18
What is the ph level of lime juice??
Answer
2
Akhilesh Kumar
Subject: Science
, asked on 19/1/18
What is effuse
Answer
1
Devhuti
Subject: Science
, asked on 17/1/18
What are Canal rays state the nature of the constituent of canal rays ? Who discovered Canal rays
Answer
1
Devhuti
Subject: Science
, asked on 17/1/18
In an experiment to determine the melting point of ice in labortry , what what form of ice should be used preferably? what should be the reading of thermometer be noted
Answer
1
Devhuti
Subject: Science
, asked on 17/1/18
Define latent heat of vapouriosion . Explain why particles in steam have more energy than water at 100 degree C
Answer
2
Arushi
Subject: Science
, asked on 15/1/18
What is the use of a fractionating coloumn in the process of fractional distillation?
Answer
1
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What are you looking for?
57. (a) What are the postulates of Bohr's model of an atom?
(b) Show diagrammatically the electron distribution in Sodium, Lithium and Aluminium atoms.
Q22. To verify the law of conservation of mass in a chemical reaction a student take known amount of solution of Barium Chloride in a small test tube which is hanged in sealed conical flask containing sodium sulphate solution the flask is slightly tilted so that the two solutions get mixed with each other and chemical reaction occur. What is the relation between masses of chemicals involved in a reaction?
Three students A, B, C prepared mixture using chalk powder, common salt and milk respectively in water. Whose mixture :
1) Would not leave the residue on filter paper after filtration ?
2) Would show tyndall effect ?
3) Would give transparent/clear solution ?