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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

Q:

A particle which is four times in mass and two times in charge that of proton is

A) helium atom B) an alpha particle
C) deuteron D) tritium
 
Answer & Explanation Answer: B) an alpha particle

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Filed Under: Chemistry

Q:

A Radioactive subatance emits

A) alpha particles B) beta particle
C) gamma particle D) all of the three
 
Answer & Explanation Answer: D) all of the three

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Filed Under: Chemistry

Q:

Natural radioactivity was discovered by

A) Rutherford B) Becquerel
C) Curie D) Schmidt
 
Answer & Explanation Answer: B) Becquerel

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Filed Under: Chemistry