Home
Class 9
CHEMISTRY
A boy is removing dirt from electric p...

A boy is removing dirt from electric plug using a pencil sharpened at both the ends.
a) What danger can happen during this incident?
b) What is the reason for this?

Text Solution

Verified by Experts

a) There is a possibilty that the child will get shock.
b) Graphite is a good conductor of electricity
Promotional Banner

Topper's Solved these Questions

  • Structure of Atom

    V PUBLICATION|Exercise QUESTION BANK|45 Videos

Similar Questions

Explore conceptually related problems

A student is doing an experiment in the laboratory using sodium. Suddenly, a piece of sodium falls into liquid ammonia. (a) What changes can you observe in liquid ammonia? (b) What is the reason for the change? (c) If the solution is kept for a long time it is changed into bronze colour. Why?

Sodium chloride solution is electrolysed using platinum electrodes. a) Write the chemical equation of the reaction at cathode. b) What happens when phenolphthalein is added to the solution? State the reason?

A graph paper is situated on a board as shown in figure. Near the graph paper a spring is placed. A pencil attached to the end of the spring as shown in figure. The pencil is free to move on the graph paper. A stone of mass 50g m is placed 1 m above the spring. [Spring constant k= 98N/m ]. What will happen to the length of mark if spring having smaller spring constant is used? Justify.

a) What are the changes that can be observed with the iron rod and the color of copper sulphate solution if iron rod is dipped in copper sulphate solution? b) Write the equation of the oxidation and reduction reactions. c) What will be the change if silver rod is used instead of iron rod? What is the reason?

In class 10 ~A , there are 30 bóys and 20 girls ln 10 ~B , there are 15 boys and 25 girls One student is to be selected from each class i) What is the probability of both being girls? ii) What is the probability of both being boys? iii) What is the probability of one boy and one girl? iv) What is the probability of atleast one boy?

Two charged conducting spheres of radii a and b are connected to each other by a wire. What is the ratio of electric fields at the surfaces of the two spheres? Use the result obtained to explain why charge density on the sharp and pointed ends of a conductor is higher than on its flatten portions.

V PUBLICATION-THE WORLD OF CARBON-QUESTION BANK
  1. Two use of graphite are given below. Which property of graphite is use...

    Text Solution

    |

  2. a) Write the names of two allotropic forms of carbons. b) Write one ...

    Text Solution

    |

  3. A boy is removing dirt from electric plug using a pencil sharpened a...

    Text Solution

    |

  4. Fill in the blanks by identifying the correct relationship. a) Carbo...

    Text Solution

    |

  5. a) Graphite is used as an lubricant to reduce friction in certain part...

    Text Solution

    |

  6. Graphite is the most stable ccrystalline allotrope of carbon. a) Exp...

    Text Solution

    |

  7. Carbon dioxide is a compound of carbon present in the atmosphere. a...

    Text Solution

    |

  8. Two uses of diamond are given below. Identify the characteristics of d...

    Text Solution

    |

  9. What are the reasons for the increase in number of carbon compounds.

    Text Solution

    |

  10. Some uses of diamond is given below. Analyse the uses and answer the f...

    Text Solution

    |

  11. a) Write formation of carbon monoxide in air. b) Write one use of ca...

    Text Solution

    |

  12. a) Certain human activities are responsible for global warming. Write ...

    Text Solution

    |

  13. Various allotropes are gven in the box. [Diamond, Wood charcoal, su...

    Text Solution

    |

  14. If carbon monoxide is inhaled in excess amount, it can cause health pr...

    Text Solution

    |

  15. Write the properties of carbon dioxide.

    Text Solution

    |

  16. Different allotropes of carbon are given below. Match them correctly w...

    Text Solution

    |

  17. Sodium carbonate and sodium bicarbonate are two salts used in daily li...

    Text Solution

    |

  18. When carbon reacts reacts with oxygen, carbon dioxide gas is produced....

    Text Solution

    |

  19. Two uses of graphite are made. Find the characteristics of graphite th...

    Text Solution

    |

  20. Graphite is the most stable ccrystalline allotrope of carbon. a) Exp...

    Text Solution

    |