Question

For the statements given below, choose the correct options.
A. CuO is black in colour.
B. Hydrogen gas burns with a pop sound.

• A. Only statement A is true.
• B. Only statement B is true.
• C. Both statements A and B are true.
• D. Both statements A and B are false.

Answer 1

The correct option is C Both statements A and B are true.

Hydrogen gas burns with a pop sound when a burning match stick is brought close to the gas.
$CuO,CuC{l}_2$, and $CuS{O}_4$ are black, green and blue coloured respectively.