Advertisements
Advertisements
प्रश्न
Give one example of a combination reaction which is also exothermic.
उत्तर
Carbon burns in air to form carbon dioxide.
C (s) + O2 (g) → CO2 (g)
Heat is released during this reaction.
APPEARS IN
संबंधित प्रश्न
One of the following is an endothermic reaction. This is:
(a) combination of carbon and oxygen to form carbon monoxide
(b) combination of nitrogen and oxygen to form nitrogen monoxide
(c) combination of glucose and oxygen to form carbon dioxide and water
(d) combination of zinc and hydrochloric acid to form zinc chloride and hydrogen
What type of chemical reaction is represented by the following equation?
A + B → C
Explain the following type of chemical reaction, giving two examples for it:
Combination reaction
What effect does an increase in concentration of H+ (aq.) in a solution have on the pH of solution?
Give a balanced equation for –
A direct combination reaction involving two elements, one of which is a non-metal
Which changes occur during chemical changes?
The number of products formed in a synthesis reaction is ______
Balance the following chemical equation and identify the type of chemical reaction.
`"Na"("s") + "S"("s") overset("(Fuse)")(->) "Na"_2"S"("s")`
Read the text below and answer the questions that follow:
A small amount of hydrochloric acid was taken in a test tube. The test tube was heated. A glass rod was dipped in the ammonia solution and held on the top of the test tube. A white smoke was seen emanating from the tip of the glass rod.
- What must have happened?
- Which colour of gas is formed?
- Write the chemical equation for the reaction.
A metal ribbon 'X' bums in oxygen with a dazzling white flame forming a white ash 'Y'. The correct description of X, Y and the type of reaction is:
