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प्रश्न
Name: Gas with rotten egg smell.
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उत्तर
Hydrogen sulphide.
H2S
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संबंधित प्रश्न
Write true or false .
A black residue is formed when sugar is heated .
Choose the correct option from the bracket and explain the statement giving a reason.
(Oxidation, displacement, electrolysis, reduction, zinc, copper, double displacement, decomposition)
Addition of an aqueous solution of ZnSO4 to an aqueous solution of BaCl2 is an example of ______ reaction.
Give a chemical test to distinguish between the following gases.
CO2 and SO2
On heating which of the following substances i.e. copper carbonate, zinc carbonate, washing soda, copper sulphate, zinc nitrate, copper nitrate, lead nitrate, ammonium chloride and ammonium dichromate – relate to the reaction given below.
A white solid which evolves two colourless gases which on cooling combine and condense on the cooler parts of the test tube.
Complete the table given below.
| Addition of dil. H2SO4 to zinc | Test for gas evolved |
True or False. If false, give the correct answer.
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Silver metal can displace hydrogen gas from nitric acid.
When magnesium is burnt in the air, a new substance is formed which is ______.
______ are substances that speed up the process of a chemical change and it will not undergo any change during the course of the reaction.
We are advised to not to play with fireworks. Give reason.
