Advertisements
Advertisements
प्रश्न
Name: Gas with rotten egg smell.
Advertisements
उत्तर
Hydrogen sulphide.
H2S
APPEARS IN
संबंधित प्रश्न
MULTIPLE CHOICE QUESTIONS
Tick the most appropriate answer
Which of the following is a reducing agent?
- oxygen
- chlorine
- hydrogen
- none of these
Fill in the blank
A new substance is formed in a _______ change.
Write true or false :
No new substance is formed during a chemical reaction.
Write the chemical reaction where the following changes are observed.
Gas is evolved
Complete and balance the following reaction:
\[\ce{NH3 + O2 ->[\Delta]}\]
State the original colour of the following substance and colour of residue obtained after heating.
Copper carbonate
State the original colour of the following substance and colour of residue obtained after heating.
Zinc carbonate
Name the solid residual product formed reaction and state its colour during – thermal decomposition of the following substance.
Zinc carbonate.
A reaction between an acid and a base is called ______.
Iron benches kept in lawns and gardens get____________. It is a _________ change because a new _________ is formed.
