A gas does not turn lime water milky, supports the combustion of burning magnesium. It has no smell and is colourless. It exitiingusher magnesium. It has no smell and is colourless. It exitingushes a glowing splint but under some circumstances reacts with oxygen and hydrogen. It is not poisonous. The gas is likely to be:

Sodium hydrogen carbonate when added to acetic acid evolves a gas. Which of the following statements are true about the gas evolved ? It turns lime water milky It extinguishes burning splinter It dissolves is a solution of sodium hydroxide It has pungent odour

Sodium hydrogen carbonate when added to acetic acid evolves a gas. Which of the following statements are true about the gas evolved It turns lime water millky It extinguishes a burning splinter It dissolves in a solution of sodium hydroxide It has a pungent odour

A student takes about 2ml of ethanoic acid in a test tube and adds a pinch of NaHCO_3 to it. He reports the following. Immediately a colourless and odourless gas evolves with a brisk effervescene. The gas turns lime water milky The gas burns with an explosion when a burning splinter is brought near it The gas extinguishes the burning splinter.

Rohit and Mayuri conducted two experiments to study the types of chemical reactions as shown in the given figures. They recorded their observations as : I. In experiment 1, yellow residue is left behind while in experiment 2 reddish brown solid is left behind. II. In both experiments, two different gases were given out. III. The colourless gas evolved in experiment 1 extinguishes the glowing splint while the gas evolved in experiment 2 turns green solution of acidified KMnO_4 orange. IV. X is reddish brown gas while gases Y and Z both have burning sulphur smell. The incorrect observation(s) is/are

The characteristics of some gases are given . Explain how they cause pollution. (a) A colourless , odourless gas which turns lime water milky. (b) A colourless , pungent gas which turns lime water milky.

When a green solid P was heated it turned into a black solid Q and a colourless gas X was released. On passing gas X, over heated carbon and another colourless gas Y was formed. Gas Y burned in oxygen to reform gas X. What will be be observed if gas X is bubbled into lime water ?

Match the compounds (A) ethanol, (B) methane, (C) ethanoic acid, (D) ethyne and (E) ethene with the descriptions given below: It reacts with sodium bicarbonate and liberates a colourless gas which turns lime water milky.

When a mixture of ammonium chloride and potassium dichromate are heated, a stable colourless gas (A) was evolved which did not support combustion but magnesium continued to burn in it. The gas (A) reacted with calcium carbide in an electric furnance forming a solid (B). The compound (B) was slowly hydrolysed by water forming an insoluble substance (C) and the solution of substance (D) which turned Nessler’s reagent brown. Identify (A) to (E) and give the reactions involved.