Photochemical reactions

Photochemical reactions is a Science & Technology concept from the MPSC syllabus, tested in 2 past MPSC questions (2016). Below are those real questions with their correct answers and explanations, plus the concepts worth being comfortable with first.

Real questions

Years tested

1 · 2016–2016

In context

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Asked in

2016

What you need to know first

Chemical KineticsLight absorptionBasic chemistry and biology of plants

Real questions that test this

सौर किंवा प्रकाश रासायनिक अभिक्रियेत सक्रियकरण ऊर्जा ही ____________ अवलंबून असते. The energy of activation depends upon ___________ in photochemical reaction.

1)उष्णतेवर / heat

2)आण्विक टक्करीवर / molecular collision

3)संहतीवर / concentration

4)प्रकाशाच्या तीव्रतेवर / intensity of light✓ Correct

In many photochemical reactions, the activation energy can be zero or independent of temperature in certain primary steps, leading to 'None of the above' or specific nuanced behaviors depending on the exact options in the full exam set.

निसर्गात, ____________ हे सौर/प्रकाश रासायनिक अभिक्रियेचे उदाहरण आहे. In nature, ____________ is an example of photochemical reaction.

1)समुद्राच्या पाण्यातील सोडिअम क्लोराइडचे तयार होणे / formation of sodium chloride in sea-water

2)हायड्रोजन व ऑक्सिजनचे पाण्यात रूपांतर होणे / conversion of hydrogen and oxygen into water

3)वातावरणातील ऑक्सिजनचे ओझोन मध्ये रूपांतर होणे / conversion of atmospheric oxygen into ozone✓ Correct

4)आम्ल पाऊस पडणे / formation of acid rain

Photosynthesis in plants is the most prominent natural example of a photochemical reaction where solar energy is converted into chemical energy.

More Science & Technology concepts

Isotopes Chemistry Radioactivity Sound waves Taxonomy Atomic number Avogadro number Biodiversity Biology Molar mass Mole concept Plant morphology

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