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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
State whether the following statement is true or false. In case a statement is false, write the corrected statement.
Formation of manure from leaves is a physical change.
Name the type of chemical reaction shown by the following equation:
CaCO3 → CaO + CO2
Multiple choice:
Which of the following is not a characteristic of a chemical change?
Multiple choice:
Thermal decomposition of sodium carbonate will produce
Explain the following statement: Digestion is a chemical change.
Silver metal can displace hydrogen gas from nitric acid.
The percentage composition of Nitrogen in Ureas is ______.
______ is a natural indicator.
Arrange the following statements in correct sequence:
- One side is water-loving and other water-hating molecules.
- When you agitate the cloth, the dirt is surrounded by many molecules and taken away from the cloth.
- The dirt surrounded by the detergent molecules floats in the water making it dirty.
- Finally, the cloth is clean.
- The detergent molecules have two sides.
- Water hating goes and joins with dirt and oil in the cloth while the water-loving joins with the water molecules.
State whether the following statement is true or false:
When a candle burns, both physical and chemical changes take place.
