Concentrated sulphuric acid is added followed by heating to each of the following test tubes labelled (i) to (v).

Identify in which of the above test tube the following change will be observed. Support your answer with the help of a chemical equation. Evolution of brown gas.

Concentrated sulphuric acid is added followed by heating to each of the following test tubes labelled (i) to (v). Identify in which of the above test tube the following change will be observed. Support your answer with the help of a chemical equation. Evolution of colourless gas.

Concentrated sulphuric acid is added followed by heating to each of the following test tubes labelled (i) to (v). Identify in which of the above test tube the following change will be observed. Support your answer with the help of a chemical equation. Formation of black substance.

Concentrated sulphuric acid is added followed by heating to each of the following test tubes labelled (i) to (v). Identify in which of the above test tube the following change will be observed. Support your answer with the help of a chemical equation. Formation of black substance.

Concentrated sulphuric acid is added followed by heating to each of the following test tubes labelled (i) to (v). Identify in which of the above test tube the following change will be observed. Support your answer with the help of a chemical equation. Disappearance of yellow powder along with evolution of colourless gas.

Observe the figure and answer the following: Write down the reaction taking place in test tube.

State your observations in the following cases : Ammonium chloride is heated in a hard glass test tube.

A student dropped a few pieces of marble in dilute hydrochloric acid contained in a test tube. The evolved gas was passed through lime water. What change would be observed in lime water? Write the balanced chemical equations for both the change observed?

State any two characteristics of the following chemical equation. dilute sulphuric acid is added to zinc granules in a test tube.

Pratyush took sulphur powder on a spatula and heated it. He collected the gas evolved by invent a test tube over it, as shown in the figure below: Write a balanced chemical equation for reaction taking place.

Pratyush took sulphur powder on a spatula and heated it. he collected the gas evolved by inverting a test tube over it as shown in figure. what is action of gas on moist litmus paper. write a balanced chemical equation for the reaction taking place