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The correct electron dot structure of a water molecule is - Science

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प्रश्न

The correct electron dot structure of a water molecule is

विकल्प

MCQ

उत्तर

Explanation - 

The central atom in water molecule is oxygen. It has 6 electrons in its valence shell and shares one electron each from the two hydrogen atoms.

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अध्याय 4: Carbon and its Compounds - Multiple Choice Questions [पृष्ठ ३२]

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एनसीईआरटी एक्झांप्लर Science [English] Class 10
अध्याय 4 Carbon and its Compounds
Multiple Choice Questions | Q 22. | पृष्ठ ३२

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संबंधित प्रश्न

Give a chemical test to distinguish between saturated and unsaturated hydrocarbons.


Why are certain compounds called hydrocarbons? Write the general formula for homologous series of alkanes, alkenes and alkynes and also draw the structure of the first member of each series. Write the name of the reaction that converts alkenes into alkanes and also write a chemical equation to show the necessary conditions for the reaction to occur.


Write the electron-dot structures for ethyne.


Fill in the following blank with suitable word:

Ethyne has ......... carbon-hydrogen single bonds.


You are given the following molecular formulae of some hydrocarbons:
C5H8; C7H14; C6H6; C5H10; C7H12; C6H12

Which two formulae represent unsaturated hydrocarbons having triple bonds?


What happens when vegetable oils are hydrogenated? Name the catalyst used.


Which of the following hydrocarbons can decolourise bromine water and which cannot? Why?
C6H12, C6H14, C6H10


What are hydrocarbons? Write the general formula of (i) saturated hydrocarbons, and (ii) unsaturated hydrocarbons and draw the structure of one hydrocarbon of each type. How can an unsaturated hydrocarbon be made saturated?

The name of the compound CH3 — CH2 — CHO is


The formulae of four organic compounds are shown below. Choose the correct option

A B C D
\[\begin{array}{cc}
\phantom{.}\ce{H}\phantom{......}\ce{H}\\
\phantom{.}\backslash\phantom{.....}/\\
\ce{C = C}\\
/\phantom{.....}\backslash\\
\ce{H}\phantom{......}\ce{H}
\end{array}\]
\[\begin{array}{cc}
\phantom{........}\ce{H}\phantom{.....}\ce{O}\\
\phantom{.......}|\phantom{....}//\\
\ce{H - C - C}\\
\phantom{......}|\phantom{.....}\backslash\\
\phantom{...........}\ce{H}\phantom{.....}\ce{O - H}
\end{array}\]

\[\begin{array}{cc}
\ce{H}\phantom{....}\ce{H}\\
|\phantom{.....}|\\
\ce{H - C - C - H}\\
|\phantom{.....}|\\
\ce{H}\phantom{....}\ce{H}
\end{array}\]

 

\[\begin{array}{cc}
\ce{H}\phantom{...}\ce{H}\phantom{....}\\
|\phantom{....}|\phantom{....}\\
\ce{H - C - C - O - H}\\
|\phantom{....}|\phantom{.....}\\
\ce{H}\phantom{....}\ce{H}\phantom{.....}
\end{array}\]

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