Home
Class 10
BIOLOGY
State the kind of chemical reactions in ...

State the kind of chemical reactions in the following examples `:`
(i) Digestion of food in stomach
(ii) Combustion of coal in air
(iii) Heating of limestone.

Text Solution

Verified by Experts

(i) Digestion of food in stomach . During digestion, the complex food is broken into simpler form. Therefore, it is a type of decomposition reaction.
(ii) Combustion of coal in air. During combustion the coal burns in air to form `CO_(2), H_(2)O` along with the evolution of heat. Thus, it is a type of exothermic decomposition reaction.
(iii) Heating of limestone. When limestone is heated strongly, it breaks into `CO_(2)` and lime. Thus, it is a type of thermal decompositin reaction.
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • X BOARDS

    X BOARDS|Exercise SET-I SECTION-A|1 Videos

  • X BOARDS

    X BOARDS|Exercise SET-I SECTION-B|1 Videos

  • X BOARDS

    X BOARDS|Exercise SET III (SECTION -D)|2 Videos

  • QUESTION PAPER 2023

    X BOARDS|Exercise Question|24 Videos

Similar Questions

Explore conceptually related problems

The combustion of coal in air is a chemical reaction.

Identify the type of chemical reaction in the following statement and explain each of them : Digestion of food in our body.

Write balanced chemical equations for the following reactions : (i) When copper is heated in air. (ii) When aluminium is heated in air. (iii) Aluminium oxide reacts with Sodium hydroxide.

Explain the following with examples : (i) Tetravalency (ii) Substitution reaction (iii) Addition reaction (iv) Combustion

Write balanced chemical equations for the following reaction Cinnabar is heated in the air.

given the following standard heats of reaction at constant pressure: (i) Heat of formation of water =-68.3 kcal (ii) Heat of combustion of acetylene=-310.6 kcal (iii) Heat of combustion of ethylene =-337.2 kcal Calculate the heat of reaction for the hydrogenation of acetylene at constant volume (25^(@)C) .

Write chemical equation to illustrate the following reactions: (i) Wolff Kishner reduction , (ii) Aldol condensation (iii) Cannizzaro reaction.

What kind of evolution has brought similarity in the following examples : (i)Placental cat and a marsupial cat (ii)Fishes and whales (iii)Darwin's finches

Write chemical equations for the following reactions: (i) Calcium metal reacts with water. (ii) Cinnabar is heated in the presence of air. (iii) Manganese dioxide is heated with aluminium powder. (b) What are alloys? List two properties of alloys.

Expalin the state of chemical reactions when : (i) DeltaG =0 (ii) DeltaG lt 0 and (iii) DeltaG gt 0

Home
Profile