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Name the Black Substance of Pencil. Will the Current Flow Through the Electrical Circuit When We Use the Sharpened Ends of the Pencil to Complete the Circuit? - Science

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प्रश्न

Name the black substance of pencil. Will the current flow through the electrical circuit when we use the sharpened ends of the pencil to complete the circuit?

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उत्तर

The black substance inside a pencil is graphite.
Yes, current will flow through the electrical circuit if we use the sharpened ends of the pencil to complete the circuit, as graphite is a good conductor of electricity.

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अध्याय 4: Carbon And Its Compounds - Exercise 1 [पृष्ठ २२१]

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लखमीर सिंग Chemistry (Science) [English] Class 10
अध्याय 4 Carbon And Its Compounds
Exercise 1 | Q 8 | पृष्ठ २२१

वीडियो ट्यूटोरियलVIEW ALL [2]

संबंधित प्रश्न

 Why are most carbon compounds poor conductors of electricity?


Name the element whose one of the allotropic forms is buckminsterfullerene.


Fill in the blank in the following sentence:

The number of single covalent bonds in C2H2 molecule are ...........


Why is graphite used for making dry cell electrodes but diamond is not?

 

Friedrich Wohler converted an inorganic compound into an organic compound in the laboratory.

Write the name and formula of organic compound formed.


The organic compound prepared by Wohler from an inorganic compound called ammonium cyanate was:
(a) glucose
(b) urea
(c) uric acid
(d) vinegar


Which of the following cannot exhibit isomerism?
(a) C4H10
(b) C5H12
(c) C3H8
(d) C6H14


The electronic configurations of two elements A and B are given below:

A 2, 6
B 2, 8, 1

(a) What type of chemical bond is formed between the two atoms of A?
(b) What type of chemical bond will be formed between the atoms of A and B?


Complete the following:

In case of non-polar covalent bond, the covalent bond is formed in the ______ of atoms and shared electrons are ______ distributed. (corner, middle, equally, unequally)


Draw an electron dot structure of the following molecule. (Without showing the circle) :
Methane


Write answer as directed.
Saturated hydrocarbons are classified into three types. Write these names giving one example each.


Acids dissolve in water to produce positively charged ions. Draw the structure of these positive ions.


Draw an electron dot diagram to show the formation of the following compound.
Methane


Electrons are getting added to an element Y: 

which electrode will Y migrate to during the process of electrolysis?


Your body is made up of carbon.


List two differences between the properties exhibited by covalent compounds and ionic compounds.


Give an example for each of the following statement

A compound in which two Covalent bonds are formed. 


Give an example for each of the following statement.

Formation of coordinate covalent bond between NH3 ➝ BF3 molecules


Carbon forms four covalent bonds by sharing its four valence electrons with four univalent atoms, e.g., hydrogen. After the formation of four bonds, carbon attains the electronic configuration of ______.


Name the following:

\[\ce{CH3 - CH2CH = CH2}\]


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