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1
Q:

In modern periodic table while going from top to bottom in a group ______.

 

A) size of an atom increases B) size of an atom decreases
C) ionisation energy of an atom increases D)  size and ionisation energy of an atom increases

Answer:   D)  size and ionisation energy of an atom increases



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A) Eosin B) Phenolphthalein
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Answer & Explanation Answer: C) Universal indicator

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Which of the following classifications is based on atomic numbers?

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Aluminium oxide is ___ in nature.

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Answer & Explanation Answer: A) amphoteric

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The process of transferring of charge from a charged object to the earth is called ______________.

 

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Answer & Explanation Answer: D) earthing

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2 9571
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Generally covalently bonded molecules ______.

 

I. have high boiling and melting point as compare to ionically bonded molecules

II. poor conductors of electricity

III. have weak intermolecular force

 

A) Only I and II B) Only I and III
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Answer & Explanation Answer: C) Only II and III

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Match the following items of column A with column B.

 

 

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Answer & Explanation Answer: B) I – 2, II – 1, III – 3  

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The process of reducing the milk fat globules size to allow them to stay evenly distributed in milk is called ____.

A) Standardization B) Pasteurization
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Answer & Explanation Answer: C) Homogenization

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