Which of the following substances enters our body when a red ant bites us?

How is the concentration of hydroxide ions $(OH^-)$ affected when excess base is dissolved in a solution of sodium hydroxide?

What type of substance is $NaOH$?

Why do acids not show acidic behaviour in the absence of water?

$R$. $K$. Patel,a chemistry teacher,explained the properties of inorganic acids in Std. $10$. He intentionally stated one of the properties incorrectly. Identify which one was wrong.

Which of the following is a dibasic acid?