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Some Natural Phenomena (Set - II)

Some Natural Phenomenon - II

21 Questions Published
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Questions

Question 1 Multiple Choice (Single Answer)

A charged glass rod rubbed with silk is brought near a charged plastic straw rubbed with polythene. What will happen?

  1. The glass rod and the straw will repel each other.
  2. <font face="Arial">The glass rod and the straw will attract each other.</font>
  3. No effect is observed.
  4. Sometimes the rod will attract the straw and at other times it will repel the straw. Hence, no conclusion can be drawn.
Question 2 Multiple Choice (Single Answer)

Which of the following objects cannot be charged by rubbing?

  1. A plastic scale
  2. An aluminium rod
  3. An inflated balloon
  4. A woollen cloth
Question 3 Multiple Choice (Single Answer)

What will happen when dry hair are rubbed with a plastic comb?

  1. Plastic comb and dry hair both acquire a charge.
  2. Only the hair acquire a charge.
  3. Plastic comb becomes hot due to rubbing.
  4. Only the plastic comb acquires a charge.
Question 4 Multiple Choice (Single Answer)

When charges move, they constitute a/an ________.

  1. electric current
  2. magnetic field flow
  3. heat wave
  4. light beam
Question 5 Multiple Choice (Single Answer)

A positively charged object attracts another charged object kept close to it. What is the nature of the charge on the other object?

  1. Negative
  2. Positive
  3. Neutral
  4. Cannot be determined
Question 6 Multiple Choice (Single Answer)

The electric charge can be transferred from a charged object to another through a/an _______.

  1. conductor
  2. electroscope
  3. insulator
  4. none of these
Question 7 Multiple Choice (Single Answer)

There are charged and uncharged objects in a box. Radha wants to collect the charged objects. How can she find out which objects are charged?

  1. By using a microscope
  2. By using a seismograph
  3. By using an electroscope
  4. By using an ohmmeter
Question 8 Multiple Choice (Single Answer)

What type of material is useful in highly seismic areas for the construction of houses?

  1. Mud
  2. Bricks
  3. Marble
  4. Stones
Question 9 Multiple Choice (Single Answer)

Tremors on the earth can be caused by __________.
(a) nuclear explosions
(b) meteorite hits
(c) thunderstorms
(d) cyclones

  1. Only (a)
  2. Only (a) and (b)
  3. Only (c)
  4. Only (c) and (d)
Question 10 Multiple Choice (Single Answer)

The really destructive earthquakes have magnitudes ________.

  1. between 1 and 2
  2. between 4 and 5
  3. less than 1
  4. higher than 7
Question 11 Multiple Choice (Single Answer)

What precautions should be taken during an earthquake?

  1. Use elevators to go on the roof of the building if you are inside a building.
  2. Find a clear spot close to the buildings if you are in a metropolitan city.
  3. Take shelter inside the car parked in an open field if you are travelling in one.
  4. Take shelter under heavy objects as heavy objects won't move.
Question 12 Multiple Choice (Single Answer)

In which layer of the earth do the disturbances happen?

  1. Innermost core
  2. Outer core
  3. Mantle
  4. Crust
Question 13 Multiple Choice (Single Answer)

The streaks of bright light and sound in the air are produced during a thunderstorm when _____.

  1. negative charges repel each other
  2. positive charges repel each other
  3. negative and positive charges meet
  4. none of these
Question 14 Multiple Choice (Single Answer)

Where do positive charges accumulate on a cloud?

  1. Near the upper edge of the cloud
  2. Near the lower edge of the cloud
  3. On the whole surface of the cloud
  4. In the middle of the cloud
Question 15 Multiple Choice (Single Answer)

If a storm is accompanied by lightning, which of the following should be avoided?

  1. To sit near a window
  2. To take shelter under a shed
  3. To go close to water
  4. All of the above
Question 16 Multiple Choice (Single Answer)

What is/are the cause(s) of disturbance inside the earth?
(a) Collision of plates
(b) When plates brush past one another
(c) Increase in temperature inside the earth in summers

  1. Only (a) and (b)
  2. Only (b) and (c)
  3. Only (b)
  4. Only (c)
Question 17 Multiple Choice (Single Answer)

Which of the following options are the qualities of earthing?
(a) It must be able to dissipate currents repeatedly.
(b) It must have a low corrosion resistance.
(c) It should be an insulator.
(d) It should be easy to maintain.

  1. Only (a) and (d)
  2. Only (a) and (b)
  3. Only (c) and (d)
  4. Only (d) and (b)
Question 18 Multiple Choice (Single Answer)

Why is it advised not to touch water pipes in buildings during a thunderstorm?
(a) Because heat can be produced in them due to friction with the wind
(b) Because current can be passing through them
(c) Because the water pipe may burst due to excess of flow of water

  1. Only (a)
  2. Only (b)
  3. Only (c)
  4. Only (a) and (c)
Question 19 Multiple Choice (Single Answer)

Which of the following options can be predicted to some extent before it/they actually happen(s)?
(a) Lightning
(b) Thunderstorm
(c) Earthquake

  1. Only (a)
  2. Only (a) and (b)
  3. Only (c)
  4. Only (b) and (c)
Question 20 Multiple Choice (Single Answer)

What is the nature of charge (A) on the metal cap and (B) on the leaves of an uncharged electroscope when a negatively charged body is brought in contact with its metal cap?

  1. (A) Positive (B) Negative
  2. (A) Negative (B) Negative
  3. (A) Negative (B) Positive
  4. (A) Positive (B) Positive
Question 21 Multiple Choice (Single Answer)

Why does a charged body lose its charge if it is touched with hands?

  1. Charges pass from the charged bodies through human body into the earth.
  2. Hands acquire opposite charge when we touch the charged body. It discharges the opposite charge by making the charged body neutral.
  3. Charges dissipiate into the atmosphere through the hair on our body.
  4. Our clothes get charged due to the charged body, and that is what we can feel when we change clothes.
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