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Q:

What causes brownian motion in colloids?

A) coagulation of particles and the dispersed phase B) erratic flashes of light
C) molecules of the dispersion medium colliding with dispersed phase particles D) All the above
 
Answer & Explanation Answer: C) molecules of the dispersion medium colliding with dispersed phase particles

Explanation:

When their is a colloid in the solution, then it will show the Brownian movement, such as dust particle in the air will show the Brownian movement.

 

Hence, Brownian movement arises due to the impact of the molecules of the dispersion medium with the colloidal particles. It has been postulated that the impact of the molecules of dispersion medium on the colloidal particles are unequal.

 

This leads to the zig-zag (random) motion of the colloidal particles.

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Filed Under: Physics
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6 6103
Q:

How many wickets Kapil Dev had taken in test matches when he retired

A) 450 B) 430
C) 435 D) 434
 
Answer & Explanation Answer: D) 434

Explanation:
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Filed Under: Sports

5 6100
Q:

A method of providing virtual memory is called _____.

A) Fragmentation B) Segmentation
C) De-fragmentation D) Paging
 
Answer & Explanation Answer: B) Segmentation

Explanation:
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Filed Under: Computer
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18 6099
Q:

A CD-ROM disk  _______

A) cannot be erased and rewritten B) has more storage capacity than a CD-R
C) holds less data than a floppy disk D) Can be written only once
 
Answer & Explanation Answer: A) cannot be erased and rewritten

Explanation:
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Filed Under: Computer
Exam Prep: Bank Exams

6 6098
Q:

The Highest dam in india is the _________dam

A) Maithan B) Bhakra
C) Hirakud D) Machkund
 
Answer & Explanation Answer: B) Bhakra

Explanation:

The Bhakra dam is 226 metres high and is one of the highest dams in the world.

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Filed Under: Indian Geography

4 6097
Q:

The process of transferring of charge from a charged object to the earth is called ______________.

 

A) neutralisation B) negation
C) terraforming D) earthing
 
Answer & Explanation Answer: D) earthing

Explanation:
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Filed Under: Chemistry
Exam Prep: Bank Exams

2 6096
Q:

Second Ozone Hole was detected over

A) Tibet B) Sweden
C) Northern hemisohere D) Antarctica
 
Answer & Explanation Answer: A) Tibet

Explanation:

Second ozone hole was detected over Tibet in the year 2006. 

Ozone is a form of oxygen, acts as a high-altitude atmospheric screen against cancer-causing ultraviolet light.

The main source of these halogens in the stratosphere is photodissociation of man made halocarbon refrigerants, solvents, propellants and CFC's.

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Filed Under: World Geography
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3 6096
Q:

In 1930, which leader started the Red Shirt Movement in the North West Frontier Province?

Answer

Khan Abdul Ghaffar Khan

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Subject: General Awareness

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