Sunday, June 30, 2013

CBSE Class 8 - Science - CH 15 - SOME NATURAL PHENOMENA (MCQs)



SOME NATURAL PHENOMENA
(MCQs)

Lightning over Oradea Romania
Lightning over Romania
credits:wpclipart
Q1: Which device is used to protect building from lightning conductor?

(a) Seismograph
(b) Lightning Conductor
(c) Barometer
(d) Thermal Conductor


Q2: Name the scientist who showed that lightning and the spark from your clothes are essentially the same phenomena?

(a) Thomas Alva Edison
(b) Benjamin Franklin
(c) Franklin D. Roosevelt
(d) Isaac Newton


Q3: Two objects with like charges will ...

(a) attract each other
(b) repel each other
(c) either attract or repel
(d) neither attract nor repel



Q4: Two objects with unlike charges will ...

(a) attract each other
(b) repel each other
(c) either attract or repel
(d) neither attract nor repel




Q5: The charge acquired by a glass rod when it is rubbed with silk is considered as ...

(a) neutral
(b) either positive or negative
(c) positive
(d) negative


Q6: When charges move, they constitute an ...

(a) electric current
(b) magnetic effect
(c) heating effect
(d) all of the above


Q7: Device can which be used to test whether an object is carrying charge or not is known as ...

(a) Electroscope
(b) Microscope
(c) Periscope
(d) Telescope


Q8: In thunderstorm, the charges accumulate near the upper edges of clouds are ....

(a) negatively charged
(b) positively charged
(c) neutral
(d) none of these


Q9: Which scale is used to measure the magnitude of earth quake?

(a) Celsius
(b) Kelvin
(c) Richter
(d) Pascal


Q10: During lightning which of the following is a NOT a safe place?

(a) Open field
(b) Inside a house
(c) Bus Stop
(d) Elevated Ridge



Answers:
1: (b) Lightning Conductor
2: (b) Benjamin Franklin
3: (b) repel each other
4: (a) attract each other
5: (c) positive
6: (d) all of the above
7: (a) Electroscope
8: (b) positively charged
9: (c) Richter
10: (d) Elevated Ridge


12 comments:

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  3. In the last question the answer should be a part not the d one plzz correct it

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  4. In the last question the answer should be a part not the d one plzz correct it

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  5. IT IS REALLY REALLY HELPFUL. ACTUALLY,THE TRUTH IS IT PROTECTS ME FROM SCOLDING BY MY SCIENCE TEACHER.
    THANKS...............

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  6. I canot solve CBSE papers are very different but nice

    ReplyDelete
  7. good but the last question open field is not safe also

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