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Is Photosynthesis an Endothermic Reaction Or an Exothermic Reaction? - Science

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प्रश्न

Is Photosynthesis an endothermic reaction or an exothermic reaction?

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उत्तर

Photosynthesis: Endothermic reaction
Photosynthesis occurs by absorbing light energy from sunlight.

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पाठ 1: Chemical Reactions and Equations - Exercise 1 [पृष्ठ २१]

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लखमीर सिंह Chemistry (Science) [English] Class 10
पाठ 1 Chemical Reactions and Equations
Exercise 1 | Q 35.6 | पृष्ठ २१

व्हिडिओ ट्यूटोरियलVIEW ALL [4]

संबंधित प्रश्‍न

Translate the following statement into chemical equation and then balance it.

Hydrogen sulphide gas burns in the air to give water and sulphur dioxide.


Translate the following statement into chemical equation and then balance it.

Potassium metal reacts with water to give potassium hydroxide and hydrogen gas.


Translate the following statement into chemical equation and then balance the equation:

Aluminium metal replaces iron from ferric oxide, Fe2O3, giving aluminium oxide and iron.


Correct and balance the following equation:
Ca   +   H2O     CaOH   +   H


Which of the following is not an endothermic reaction?

(a) CaCO3 → CaO  +  CO2

(b) 2H2O →2H2 + O2

(c) 6CO2 + 6H2O → C6H12O6  +  6O2

(d) C6H12O6  + 6O2 → 6CO2  + 6H2O


Write your observation for the following chemical reaction and name the product formed :

When dilute acetic acid is poured on baking soda.


In the experiment for determining the percentage of water absorbed by raisins, we do the final weighing of the raisins after keeping them dipped in water for about one hour. For the accuracy of the result, the extra water from the surface of the soaked raisins is removed by


Write the chemical equation for the following word equation and balance them.

Calcium + Nitrogen → Calcium nitride


What is the valency of :

carbon in CH4


Write the balanced chemical equation of the following reaction. sodium hydroxide + sulphuric acid → sodium sulphate + water


Write the balanced chemical equation of the following reaction.

aluminium carbide + water → aluminium hydroxide + methane


Grills of doors and windows are always painted before they are used.


When a potassium iodide solution is added to a solution of lead (II) nitrate in a test tube, a precipitate is formed.

What is the colour of this precipitate? Name the compound precipitated.


Write word equation for the following molecular equation:

\[\ce{N2 + 3H2 ⇌[Fe - 450°C][200 atoms] 2NH3 + \triangle}\]

Word equation:
State why [+ Δ] indication is seen after NH3.
State what 200 atmospheres – indicates.
State the function of Fe in the above reaction.


Balance the following simple equation:

FeCl2   +   Cl2  →  FeCl3 


Balance the following simple equation:

KHCO3 →  K2CO3   +    H2O   +   CO2


Balance the following simple equation:

NaHCO3  +  H2SO4  →  Na2SO4  +  H2O  +  CO2 


Write a balanced equation for the following word equation:

Potassium bromide + Chlorine → Potassium chloride + Bromine


The chemical equation Na2SO4(aq) + BaCl2(aq) → BaSO4(s)↓ + 2NaCl(aq) represents which of the following types of reaction?


Give the characteristic tests for the following gases :

  1. CO2
  2. SO2
  3. O2
  4. H2

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