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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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Subject: Chemistry
Exam Prep: Bank Exams
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Which of the follow is the last element in Newlands Law of Octaves classification?

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By which of the following processes are metals of high reactivity extracted from purified molten ore?

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How many atoms are present in a (NH4)2SO4 molecule?

A) 15 B) 14
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Answer & Explanation Answer: A) 15

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In Mendeleev's periodic table, the properties of the elements are considered a periodic function of their:

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Answer & Explanation Answer: A) Atomic mass

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Which gas is released when water is added to bleaching powder?

A) Oxygen B) Hydrogen
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Answer & Explanation Answer: D) Chlorine

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Atoms of same element having different mass numbers are called__________

A) Isobars B) Isotopes
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Answer & Explanation Answer: B) Isotopes

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Decane has how many hydrogen atoms?

A) 22 B) 24
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Answer & Explanation Answer: A) 22

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_______________ of a material is defined as the minimum amount of the work necessary to remove a free electron from the surface of the material.

A) The electro-repulsive force B) The coulomb factor
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Answer & Explanation Answer: D) The work function

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