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Q:

Which among the following planets is smaller than the Earth

A) Neptune B) Venus
C) Saturn D) Uranus
 
Answer & Explanation Answer: B) Venus

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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:

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:

The alpha-particles are

A) high energy electrons B) positively charged hydrogen irons
C) high energy x ray radiations D) double positively charged helium nuclei
 
Answer & Explanation Answer: D) double positively charged helium nuclei

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Filed Under: Chemistry

Q:

The activity of rradioisotope change with

A) temperature B) pressure
C) chemical environment D) None of these
 
Answer & Explanation Answer: D) None of these

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Filed Under: Chemistry

Q:

The fundamental particles present in equal numbers in neutral atoms are

A) protons and electrons B) neutrons and electrons
C) protons and neutrons D) protons and positrons
 
Answer & Explanation Answer: A) protons and electrons

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Filed Under: Chemistry