Chemistry
A reactive metal (P) is treated with H2SO4 (dil). The gas is evolved and is collected over water. Which of the following conclusion is correct
P. The gas is hydrogen
Q. The gas is lighter than air
- Only P
- Only Q
- Both P and Q
- Neither P nor Q
Related Questions
Which of the following is NOT correct about electro-refining of copper?
- Cathode is pure copper rod and anode is impure copper block.
- Cathode is impure copper block and anode is pure copper rod.
- Electrolyte is copper sulphate solution, acidified with sulphuric acid.
- Anode mud may contain silver and gold as insoluble impurities.
In which of the following solution, Zn can displace metal from the solution?
- P
- Q
- R
- S
How many electrons are present in the valence shell of the element, with atomic number 18?
- 7
- 0
- 8
- 4