$A$ crystalline solid $X$ reacts with dil. $HCl$ to liberate a gas $Y$. $Y$ decolourises acidified $KMnO_4$. When a gas $Z$ is slowly passed into an aqueous solution of $Y$,colloidal sulphur is obtained. $X$ and $Z$ could be,respectively

  • A
    $Na_2SO_4, H_2S$
  • B
    $Na_2SO_4, SO_2$
  • C
    $Na_2S, SO_3$
  • D
    $Na_2SO_3, H_2S$

Explore More

Similar Questions

When a colored gas is passed through bromine water,the color is discharged. Which gas is it?

$(CH_3)_3SiCl$ is used during the polymerization of organosilicons because

Which of the following statements about zeolites is incorrect?

$(a)$ Classify the following oxides as neutral,acidic,basic,or amphoteric:
$CO, B_2O_3, SiO_2, CO_2, Al_2O_3, PbO_2, Tl_2O_3$
$(b)$ Write suitable chemical equations to show their nature.

Ions consisting of two or more atoms which have properties similar to halide ions and contain at least one nitrogen atom are called ........

Vedclass Products

For Students

Vedclass Test Series

Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.

Start Free Trial
For Teachers

Exam Paper Generator

Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.

Try Free
For Institutes

Online Exam Module

Live online exams with unlimited students, 360° analytics & white-label branding.

See Demo