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Q:

Which statement best describes electrons?

A) Electrons orbit around the nucleus B) Electrons are composed of protons and neutrons
C) Electrons reside in the nucleus D) Electrons have a positive charge
 
Answer & Explanation Answer: A) Electrons orbit around the nucleus

Explanation:

Electrons orbit around the nucleus is correct about them.

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Filed Under: Chemistry
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Q:

A hunter on the ground wishes to shoot a  bird on a tree at a distance with his rifle. He has to point the rifle

A) at the lower alevation than the bird B) at a higher alevation than the bird
C) In the same direction as the bird D) vertically upwards
 
Answer & Explanation Answer: B) at a higher alevation than the bird

Explanation:

The trajectory of the bullet is a parabola

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Filed Under: Physics

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Q:

A manometer is used to measure

A) earthquake B) pressure
C) temperature D) density
 
Answer & Explanation Answer: B) pressure

Explanation:

A manometer is used to measure a pressure difference between two points.

a_manometer_is_used_to_measure1553165853.png image

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Filed Under: Physics
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Q:

If length of a rectangle is decreased by 6 cm we get a square and the area of square formed is 252 cm2 less than the area of square formed when breadth of the original rectangle is increased by 6 cm. Find the perimeter of the rectangle.

A) 66 cm B) 88 cm
C) 80 cm D) 72 cm
 
Answer & Explanation Answer:

Explanation:

Let length and breadth of rectangle be L cm
and B cm respectively So, ATQ
Area1= (L-6)×B
But this is square, so L-6=B
Area1= (L-6) × (L-6)
Case 2, Area2= L × (B+6),
L=B+6
So, Area2= L × L,
Given, Area2-Area1= 252(L)2-(L-6)2=252
Solving this, L= 24
B= 18
Perimeter= 2(L+B)= 2(24+18)= 84 cm

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Filed Under: Quantitative Aptitude - Arithmetic Ability
Exam Prep: Bank Exams , GATE

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Q:

The capital of Colombia is ?

A) Caracas B) Santiago
C) Lima D) Bogota
 
Answer & Explanation Answer: D) Bogota

Explanation:
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Filed Under: World Geography
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Q:

Which of the following became widespread during the 1980's?

A) Internet B) Radio
C) Cable television D) All the above
 
Answer & Explanation Answer: C) Cable television

Explanation:

Cable television or cable TV became widespread during the 1980's.

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Filed Under: Indian History
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Q:

Which action is the best example of a direct observation?

A) listening to a cricket chirp at night and counting the number of chirps per minute B) determining the seal population of an island by counting seals in 10 square meters of the island
C) identifying which bird was present by the tracks that it leaves in the sand at a beach D) reading numbers on a heat sensor to conclude that there is a deer in the night woods
 
Answer & Explanation Answer: A) listening to a cricket chirp at night and counting the number of chirps per minute

Explanation:
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Filed Under: General Science
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Q:

Name the Asian country that has 1st time turned around from a Net importer of electricity to Net Exporter of electricity, as per Central Electricity Authority of the country.

A) India B) Bangladesh
C) Myanmar D) Pakistan
 
Answer & Explanation Answer: A) India

Explanation:

As per Central Electricity Authority, the Designated Authority of Government of India for Cross Border Trade of Electricity, 1st time 'India' has turned around from a net importer of electricity to Net Exporter of electricity.

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Filed Under: General Awareness
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