Science
On adding dilute sulphuric acid to a test tube containing a metal 'X', a colourless gas is produced when a burning match stick is brought near it. Which of the following correctly represents metal 'X'?
- Sodium
- Sulphur
- Copper
- Silver
Related Questions
An element with atomic number …………… will form a basic oxide.
- 7 (2,5)
- 17 (2,8,7)
- 14 (2,8,4)
- 11 (2,8,1)
Mild non-corrosive basic salt is
- Ca(OH)2
- NaCl
- NaOH
- NaHCO3
Which one of the following correctly represents Sodium oxide?
The colour of the solution observed after 30 minutes of placing zinc metal to copper sulphate solution is
- Blue
- Colourless
- Dirty green
- Reddish Brown