Test Details

Chemical Effects of Electric Current,Some Natural Phenomena

Mar 04, 9:48 PM

35 minutes

Mar 04, 10:23 PM

60.0 marks

MCQ

30 questions

Pankaj kumar yadav

Class Details

Maths

English

Maths

English

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Question Text

Question 1 :
Which process is called when negative and positive charges meet, producing streaks of bright light and sound in clouds?

Question 2 :
Two charged objects are brought close to each other. Choose the most appropriate statement from the following options:

Question 3 :
State true or false. The process of electric discharge cannot occur between clouds and the earth.

Question 5 :
What precautions should be taken if one is outside in a forest where no shelter is available and you are in an open field during a thunderstorm?

Question 6 :
Which process is called when negative and positive charges meet, producing streaks of bright light and sound in clouds?

Question 12 :
The boundaries of the plates are the weak zones where earthquakes are more likely to occur. The weak zones are also known as

Question 13 :
An earthquake measures 3 on the richer scale. Is it likely to cause much damage?

Question 16 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1d058f59b460d7261f2d2.PNG' /> In the above image, which of the following solutions will not make the bulb glow?

Question 18 :
Heating effect of electric current is the effect of current responsible for the glow of the bulb in an electric circuit.

Question 19 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1d057f59b460d7261f2d0.PNG' /> In the image above, Boojho set up this circuit for purification of copper. What will be the nature of the solution?

Question 21 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1d058f59b460d7261f2d1.PNG' /> Current does not flow in the circuit if there is a gap between the two wires. Does it indicate that air is a poor conductor of electricity?

Question 22 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1d05cf59b460d7261f2d7.PNG' /> In the image above, will the bulb glow. Write ‘Yes’ or ‘No’

Question 23 :
A coating of zinc is provided to protect iron from corrosion and rust.

Question 24 :
Boojho’s uncle has set up an electroplating factory near his village. He should dispose off the waste of the factory

Question 25 :
Electroplating of ______________ is done on objects like water taps and cycle bell to give them a shiny appearance.

Question 27 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1d05ef59b460d7261f2d9.PNG' /> In the image above, will the bulb glow. Write ‘Yes’ or ‘No’

Question 28 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1d050f59b460d7261f2c7.PNG' /> Current does not flow in the circuit if there is a gap between the two wires. Does air never conduct electricity?

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