NEET Chemistry Classification Of Elements MCQs

Which of the following is NOT a product of the reaction between copper and concentrated nitric acid?

Which of the following statements is INCORRECT regarding the reaction of calcium carbide ($CaC_2$) with nitrogen ($N_2$)?

In the industrial production of calcium cyanamide ($CaCN_2$), what is the role of nitrogen gas ($N_2$)?

Which acid is the strongest among the following: formic acid, acetic acid, chloroacetic acid, and dichloroacetic acid?

The acidity of carboxylic acids is influenced by the inductive effect of substituents. Which of the following correctly describes the impact of a chlorine substituent on the acidity of acetic acid?

Consider the following carboxylic acids: $CH_3CH_2COOH$, $CH_3COOH$, $HCOOH$. Arrange them in decreasing order of acidity.

The strong reducing behavior of $H_3$ $PO_2$ is due to:

Which structural feature contributes most significantly to the strong reducing power of hypophosphorous acid (\H_3PO_2)?

In Lassaigne's test, an organic compound containing both nitrogen and sulfur is analyzed. Upon adding ferric ions ($Fe^{3+}$) to the Lassaigne's extract, a blood-red color is observed. This coloration is due to the formation of:

Which compound is responsible for the blood-red color observed when $Fe^{3+}$ is added to the Lassaigne's extract of an organic compound containing both nitrogen and sulfur?