मराठी
महाराष्ट्र राज्य शिक्षण मंडळएस.एस.सी (इंग्रजी माध्यम) इयत्ता १० वी

Choose the Correct Alternative and Rewrite the Following:To Observe the Hydro and Clearly, Raju Should See It First Under the Low Power Lens and Then Under the High Power Lens in Order to See ________ - Science and Technology 2

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प्रश्न

Choose the correct alternative and rewrite the following:

To observe the hydro and clearly, Raju should see it first under the low power lens and then under the high power lens in order to see _____________

पर्याय

  • less area

  • wide area

  • more buds

  • all of the above

MCQ

उत्तर

all of the above
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  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
2014-2015 (July)

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संबंधित प्रश्‍न

Write the name of the following functional group:

 


Draw the structures for the following compounds:
Ethanal


State two used of ethanol (other than as a fuel).


What is meant by denatured alcohol? What is the need to denature alcohol?


Explain why, methanol is much more dangerous to drink than ethanol.

 

The usual disease caused by the excessive drinking of alcohol over a long period of time is:
(a) diabetes
(b) cataract
(c) cirrhosis
(d) arthritis


Complete:

Vinegar is prepared by the bacterial oxidation of ______.


How is acetic acid prepared from ethanol?


An organic compound 'P' is a constituent of wine. 'P' on reacting with acidified K2Cr2O7 forms another compound 'Q'. When a piece of sodium is added to 'Q' a gas 'R' evolves which burns with a pop sound. Identify P, Q and R and write the chemical equations of the reactions involved.

 

How will you carry out the following conversions:

(i) Ethanol to ethene

(ii) Bromoethane to ethanol


Ethane, Ethene, Ethanoic acid, Ethyne, Ethanol

From the compounds given above, name

 The compound with -OH as apart of its structure.



[Ethane, Ethene, Ethanoic acid, Ethyne, Ethanol]

From the above, name the homologue of the homologous series with the general formula CnH2n.


Write the molecular formula of the given compound.

Ethanol


Ethene is formed when ethanol at 443 K is heated with excess of concentrated sulphuric acid. What is the role of sulphuric acid in this reaction? Write the balanced chemical equation of this reaction. 


Give the balanced chemical equation of the following reaction:

Combustion of ethanol.


Give the balanced chemical equation of the following reaction:

Combustion of ethanol


Give the balanced chemical equation of the following reaction:

Oxidation of ethanol by acidified potassium dichromate.


Give the balanced chemical equation of the following reaction:

Oxidation of ethanol by acidified potassium dichromate.


Give the balanced chemical equation of the reactions.

Neutralization of NaOH with ethanoic acid.


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