Not all metals react with bases to produce salt and hydrogen gas.

Q. Read the following statements carefully and select the option that correctly identifies the true (T) and false (F) statements.

P: Metals upon reacting with oxygen produce metal oxides.​
Q: All metals react with cold water.​
R: Metals produce oxygen when they react with acid as well as base.​
S: Gold upon reacting with bases produces hydrogen gas and metal salt.

Q. The element which reacts both with acids and bases to produce a salt and hydrogen gas is:

Q. Question 7
Generally, metals react with acids to give salt and hydrogen gas. Which of the following acids does not give hydrogen gas on reacting with metals, except $\text{Mn}$ and $\text{Mg}$?

(a) ${\text{H}}_2{\text{SO}}_4$
(b) $\text{HCl}$
(c) ${\text{HNO}}_3$
(d) All of these

Q. Question 7
Generally, metals react with acids to give salt and hydrogen gas. Which of the following acids does not give hydrogen gas on reacting with metals, except $\text{Mn}$ and $\text{Mg}$?

(a) ${\text{H}}_2{\text{SO}}_4$
(b) $\text{HCl}$
(c) ${\text{HNO}}_3$
(d) All of these