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Q:

Which of the following layers of the earth is believed to have the heavist mineral materials of highest density

A) Central core B) Crust
C) Mantle D) Both (B) and (C)
 
Answer & Explanation Answer: A) Central core

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Filed Under: World Geography

Q:

What is the time taken by the Earth to complete one rotation on its imaginary axis

A) 24 hr 37 min 23 sec B) 24 hr
C) 23 hr 56 min 4 sec D) 23 hr 52 min
 
Answer & Explanation Answer: C) 23 hr 56 min 4 sec

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Filed Under: World Geography

Q:

The difference in the duration of day and night increases as one moves from

A) West to East B) East and west of the prime meridian
C) Poles to equator D) Equator to poles
 
Answer & Explanation Answer: D) Equator to poles

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Filed Under: World Geography

Q:

Onplanet Earth, there is no centrifugal force at the 

A) Equator B) Tropic of cancer
C) Tropic of Capricorn D) Poles
 
Answer & Explanation Answer: D) Poles

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Filed Under: World Geography

Q:

A bond formed by sharing of electrons between atoms of the element is called

A) ionic bond B) covalent bond
C) co ordinate bond D) none
 
Answer & Explanation Answer: B) covalent bond

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Filed Under: Chemistry

Q:

A bond formed by the transfer of electrons betwwen atoms of the elements is called

A) ionic bond B) covalent bond
C) co ordinate bond D) none
 
Answer & Explanation Answer: A) ionic bond

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Filed Under: Chemistry

Q:

Formation of anions occurs by

A) loss of neutrons B) gain of protons
C) gain of electrons D) none
 
Answer & Explanation Answer: C) gain of electrons

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Filed Under: Chemistry

Q:

Formation of cation occurs by

A) gain of electron B) loss of electron
C) gain of proton D) loss of proton
 
Answer & Explanation Answer: B) loss of electron

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Filed Under: Chemistry