Questions

Q:

Isotopes of the atoms of same element have

A) same number of neutrons B) same number of protons
C) same atomic mass D) different chemical properties
 
Answer & Explanation Answer: B) same number of protons

Explanation:
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Q:

What name is given to the bond between water molecules?

A) Polar B) Polar covalent
C) Hydrogen D) None of the above
 
Answer & Explanation Answer: C) Hydrogen

Explanation:

The name given to the bond between water molecules is a hydrogen bond. These bonds occur between the slightly negative oxygen of one water molecule and the slightly positive hydrogen of another water molecule. Hydrogen bonding gives water special physical properties.

 

The differences in electronegativity between hydrogen and oxygen lead to an unequal sharing of electrons. Electronegativity measures how strongly an atom attracts electrons. Oxygen, with its higher electronegativity, pulls on the shared electrons more, giving the oxygen atom a partial net negative charge. The shared electrons spend less time with the hydrogen atoms; therefore, the hydrogen regions of water have partial positive charges.

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Q:

Rockr, a cell phone from Motorola that uses Apple's iTunes software and stores up to 100 songs in its Flash memory, has been launched by 

A) Nokia B) Samsung
C) Motorola D) Bird
 
Answer & Explanation Answer: C) Motorola

Explanation:
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Q:

What word in the English language is always spelled incorrectly?

A) Schezwan B) Yorker
C) Incorrectly D) Psycologically
 
Answer & Explanation Answer: C) Incorrectly

Explanation:

INCORRECTLY is the only English word which is always spelled incorrectly.

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Q:

Who was the first woman President of the Indian National Congress

A) Annie Besant B) Sarojini Naidu
C) Vijayalakshmi Pandit D) None of these
 
Answer & Explanation Answer: A) Annie Besant

Explanation:
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Q:

Which is Largest Stadium in the world?

Answer



Strahov Stadium in Praha,Czech Republic accommodation 240000 persons


 


 

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Q:

Genes are made of 

A) Carbohydrates B) Proteins
C) Fats D) Nucleotides
 
Answer & Explanation Answer: D) Nucleotides

Explanation:

Genes: The DNA is the genetic material. The DNA is made of several nucleotides. A nucleotide means, one nitrogenous base one sugar molecule and a phosphate molecule. These Nucleotides occur in sequences and several nucleotides form one gene ( a functional gene is called a cistron)

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Q:

Mass number is always equal to ______.

 

A) number of protons B) number of neutrons
C) sum of number of protons and number of electrons D) sum of number of protons and number of neutrons
 
Answer & Explanation Answer: D) sum of number of protons and number of neutrons

Explanation:
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