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M Soumika asked a question
Subject: Chemistry, asked on on 4/1/21
What is the formula for Sodium aluminate NaAlO2 or Na3AlO3
Rajay Rajay Chakrasingh asked a question
Subject: Chemistry, asked on on 26/5/18
Solve this:
Q.61. The turmeric solution will turn red by an aqueous solution of -
(A) Potassium acetate
(B) Copper sulphate
(C) Sodium sulphate
(D) Ferric chloride
Divya Rayavarapu asked a question
Subject: Chemistry, asked on on 13/2/18
From the metals : copper iron magnesium sodium and zinc select a different metal in each case which:
1. Dose not react with dilute HCL
2. Can form2+and 3+ions
3. Has hydroxide that reacts with both acids and alkalis
Pravin asked a question
Subject: Chemistry, asked on on 8/12/18
A metal which is unaffected by dilute or concentrated acids. Name the metal
Mugdha Walawalkar asked a question
Subject: Chemistry, asked on on 13/2/18
While extracting aluminium from bauxite(Al2O3.2H2O) can conc.H2SO4 be used to remove the water as it is dehydrating agent?
Lakshmi asked a question
Subject: Chemistry, asked on on 24/1/18
Which is the most electropositive metal
Rajay Rajay Chakrasingh asked a question
Subject: Chemistry, asked on on 18/6/18
what is the chemical formula of calcite?
Rajay Rajay Chakrasingh asked a question
Subject: Chemistry, asked on on 18/6/18
Why will two oxides of iron will be produced at the product side?
Sonu Kumar asked a question
Subject: Chemistry, asked on on 8/2/18
How to study for boards in chemistry?
Rajay Rajay Chakrasingh asked a question
Subject: Chemistry, asked on on 18/6/18
How is it possible that the solubility increases with increase in size of the ion?
Drishti Arora asked a question
Subject: Chemistry, asked on on 18/12/17
Solve this:
(a) What is corrosion ? What are the necessary conditions for corrosion ?
(b) State under what conditions corrosion is faster.
(c) Corrosion can be an advantage in some cases. Ex lain.


 
Tejasv Singh Wadhwa asked a question
Subject: Chemistry, asked on on 2/9/18
name the following-a metallic ore converted to its oxides - iron[2] oxide on heating the concentrated ore
Agnibha asked a question
Subject: Chemistry, asked on on 26/1/18
Can any teacher or student
help me out
Q.15. State why aluminium is extracted from its oxide by electrolysis while copper, lead, iron by reducing agents and mercury and silver by thermal decomposition.
Divya Rayavarapu asked a question
Subject: Chemistry, asked on on 13/2/18
Please answer 3 question
Animesh Tripathi asked a question
Subject: Chemistry, asked on on 22/12/18
Why is lead not used for welding purposes but its alloy solder is used
Agnibha asked a question
Subject: Chemistry, asked on on 27/1/18
Can any teacher or student help me out with this question ..plzzz
Q.(a) When bauxite is treated with sodium hydroxide solution, what happens to :
(i) the aluminium oxide,
(ii) the iron (III) oxide.
Rajay Rajay Chakrasingh asked a question
Subject: Chemistry, asked on on 18/6/18
What is the chemical formula of Gibbsite?
Rajay Rajay Chakrasingh asked a question
Subject: Chemistry, asked on on 15/6/18
Q. Does it mean that tin lowers the melting point of alloy BELOW 18 degree Celsius? Or it reduces the melting point of the alloy TO 180 degree Celsius?
Sn — lowers melting point of alloy
melting point of alloy : 180°C
Sarthak Chakraborty asked a question
Subject: Chemistry, asked on on 5/10/18
Two element which are monoatomic
Medhansh asked a question
Subject: Chemistry, asked on on 5/10/19
Give reason plz
Medhansh asked a question
Subject: Chemistry, asked on on 5/10/19
Magnetic separtion in not used in dressing ore in the extraction of aluminium
Serastha Halder asked a question
Subject: Chemistry, asked on on 30/8/18
Define zinc spelter
Isha Das asked a question
Subject: Chemistry, asked on on 17/2/18
Write the constituents of electrolyte for the extraction of aluminium.
Akash asked a question
Subject: Chemistry, asked on on 30/7/18
Expert solve this
Tejasv Singh Wadhwa asked a question
Subject: Chemistry, asked on on 2/9/18
A black metallic oxide reduced to metal with coke
Orchi Bhunia asked a question
Subject: Chemistry, asked on on 14/2/19
Question no 3
Ameesha Sabeesh asked a question
Subject: Chemistry, asked on on 22/5/20
how are the metals like Sodium Potassium and Calcium obtained give equations
Kanishka Srivastava asked a question
Subject: Chemistry, asked on on 12/6/18
I want latest 2019 syllabus for class 10 icse boards.
Mamatha N G asked a question
Subject: Chemistry, asked on on 1/3/18
send answer
Snigdha Verma asked a question
Subject: Chemistry, asked on on 19/2/18
In formation of calcium oxide by synthesis ,name the substance that is oxidised and the substance that is reduced.
Neelima Raghuwanshi asked a question
Subject: Chemistry, asked on on 1/4/18
for each substance listed below,explain its significance in the extracion of aluminium: 1.bauxite 2.sodium hydroxide 3. cryolite 4.graphite
Sanskar asked a question
Subject: Chemistry, asked on on 13/2/19
what are the reactants used in thermite welding?
Sanika Kelekar asked a question
Subject: Chemistry, asked on on 23/3/19
Hydrogen is.not a metal but it has been assihned a place in the reactivity series.of metaks. Explain
Divya Rayavarapu asked a question
Subject: Chemistry, asked on on 13/2/18
Please answer 4rth one
Vasavi Geethika asked a question
Subject: Chemistry, asked on on 12/2/20
Please answer questions with explanations.
Mukul asked a question
Subject: Chemistry, asked on on 19/1/18

Q. Why zinc is used in cosmetics?
Q. An ore on being heated in air forms sulphurous anhydride. Write the process used for the concentration of ore.

 
Ancy asked a question
Subject: Chemistry, asked on on 13/10/18
all the 3 i want
Divya Rayavarapu asked a question
Subject: Chemistry, asked on on 13/2/18
Which metal occur as : halide
Sanika Kelekar asked a question
Subject: Chemistry, asked on on 14/4/19
Plz help.me solve this
Rohit Ratan asked a question
Subject: Chemistry, asked on on 29/12/19
Give answer for this question in picture
Sarthak Chakraborty asked a question
Subject: Chemistry, asked on on 1/12/18
Plz find this
Mamatha N G asked a question
Subject: Chemistry, asked on on 19/2/18
pllzzzzzz reply with solution its important and urgent.plzzzzz
Q. Which one of the following metal would be displaced from the solution of its salts by other three metals. Give reasons.
a) Mg
b) Ag
c) Zn
d) Cu
Sayani asked a question
Subject: Chemistry, asked on on 13/1/20
What is the Colour of Al(OH)3 ?
Divya Rayavarapu asked a question
Subject: Chemistry, asked on on 13/2/18
Please answer 18th one
Divya Rayavarapu asked a question
Subject: Chemistry, asked on on 13/2/18
How are following metallic oxides reduced and alsoWrite balanced e
equations for
Iron and zinc oxide
Sarah Kohli asked a question
Subject: Chemistry, asked on on 25/4/20
Please explain Hoope's process in detail fast.......
Vedant asked a question
Subject: Chemistry, asked on on 4/1/18
What is the main constituent metal of type metal German Silver magnesium gunmetal stainless steel
Rajay Rajay Chakrasingh asked a question
Subject: Chemistry, asked on on 14/6/18

But hard and brittle are almost of antagonistic words ?
Bronze-------hard, brittle
German silver-----------hard, silvery
Rajay Rajay Chakrasingh asked a question
Subject: Chemistry, asked on on 20/6/18
First of all it is not mentioned that HCL is solution or not. Secondly if the HCL was indeed a solution, then the pH would be less than 8?
Isha Das asked a question
Subject: Chemistry, asked on on 17/2/18
Write the chemical formulae of one main ore of iron and aluminium.
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