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Alkane-Saturated carbon compound with single bond between carbon atoms. Alkene-Unsaturated carbon compound with double bond between carbon atoms. Alkyne-Unsaturated carbon compound with triple bond between carbon atoms.

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What is invar alloy ?

Posted by Neymar Junior 5 years, 10 months ago

ICSE & ISC > Class 10 > Chemistry

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Yogita Ingle 5 years, 10 months ago

Invar is a 36% nickel iron alloy which has the lowest thermal expansion among all metals and alloys in the range from room temperature up to approximately 230°C. The Invar alloy is ductile and easily weldable, and machinability is similar to austenitic stainless steel.

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How to do

Posted by Komal Verma 5 years, 10 months ago

ICSE & ISC > Class 10 > Chemistry

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Raunak Pandey ?? 5 years, 10 months ago

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How many types of rection

Posted by Santosh Kumar Pal 5 years, 11 months ago

ICSE & ISC > Class 10 > Chemistry

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Archana Shukla 5 years, 3 months ago

7 types of reaction

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Prateek Sharma 5 years, 8 months ago

There are 5 types of reaction.

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Santosh Kumar Pal 5 years, 11 months ago

How many types of rection

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What is a homologous series?Explain with an example.

Posted by Prince Kumar 6 years ago

ICSE & ISC > Class 10 > Chemistry

1 answers

Yogita Ingle 6 years ago

A homologous series is a series of carbon compounds that have different numbers of carbon atoms but contain the same functional group.
For example, methane, ethane, propane, butane, etc. are all part of the alkane homologous series.

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Laboratory preparation of HCL

Posted by Shobhit Singh 6 years, 1 month ago

ICSE & ISC > Class 10 > Chemistry

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Yogita Ingle 6 years, 1 month ago

We produce Hydrogen Chloride in the laboratory by treating sodium chloride with concentrated sulphuric acid. We, then, heat this mixture up to 420K.

420K
NaCl + H2SO4 → NaHSO4 + HCl

We get Sodium bisulphate as a by-product. This is insoluble. Therefore, we further mix it with more sodium chloride. This mixture has to be further warmed to a higher temperature of around 823K. It gives dissolvable sodium sulfate and HCl gas.

823K
NaHSO4 + NaCl → Na2SO4 + HCl

We dry this HCl by treating it with concentrated sulphuric acid. HCl is not dried over phosphorus pentoxide or brisk lime. This is because it reacts with both of these compounds.

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What is solid

Posted by M Veenita 6 years, 2 months ago

ICSE & ISC > Class 10 > Chemistry