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Subject: Science, asked on 8/2/18

Name a non-metal which is natural conductor of heat

Subject: Science, asked on 16/1/18

What is use of hydrochloric acid

Subject: Science, asked on 9/1/18

Are solid non-metals soft. If so then how is concrete hard

Subject: Science, asked on 9/1/18

Are solid non-metals soft

Subject: Science, asked on 7/1/18

Why 2 and 3 are important to put with both of them? How can we detect with which we have to put these number as I am in 8th please try to explain on that standard?

Subject: Science, asked on 1/1/18

Why does copper, after being cleaned with vinegar and salt, obtain a greenish-blue color if it is dried with a tissue?

Subject: Science, asked on 1/1/18

What is the chemical equation for copper oxide and acetic acid + common salt solution?

Subject: Science, asked on 28/12/17

Copper in copper oxide does not liberate Sulphur Dioxide gas while copper in bronze Evolves Sulphur Dioxide gas with concentrated sulphuric acid. However for making statues copper is used in the form of bronze but not metallic copper or copper oxide .Explain why the same copper has such varied properties.

Subject: Science, asked on 28/12/17

Explain the method by which carbon tetrachloride ,water and ethyl alcohol mixture can be separated?

Subject: Science, asked on 8/12/17

Calculate the weight of quicklime formed when 500 g of limestone is heated.

Subject: Science, asked on 22/11/17

TO check whether a iron piece is a magnet or not we br​ing it close to a nail wound with copper wire and connected to a battery.
What will happen to the iron if it is magnet?
 

Subject: Science, asked on 25/10/17

Which of the following is an amphoteric oxide-
a) SO2
b) MgO
c) K2A
d) Al2O3

Subject: Science, asked on 25/10/17

Metal which does not react with HCl is-
a) Mg
b) Cu
c) Na
d) Fe

Subject: Science, asked on 10/10/17

mam i have a doubt that how many metals are there in nature

Subject: Science, asked on 30/9/17

1)Why are bells made of metals?

Name two major non-metals which are present in fertilisers.

Zinc sulphate forms a colourless solution in water. Will you observe any colour change on adding copper solution

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