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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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What is the process of slow cooling of hot glass called?

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Answer & Explanation Answer: A) Annealing

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When two liquids do not mix with each other to form a solution, what is it called?

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Answer & Explanation Answer: A) Esters

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An element has an atomic weight of W and an atomic number of N. The number of protons in the nucleus of its atom is

 

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Answer & Explanation Answer: A) N

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Which of the following elements has a total of 3 shells with 8 electrons in the last orbit?

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Answer & Explanation Answer: A) Ar

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Common salt (NaCl) is made up of

A) a weak acid and a weak base B) a strong acid and a weak base
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Answer & Explanation Answer: D) a strong acid and a strong base

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The tenth element in the Newland's periodic classification resembles the

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Answer & Explanation Answer: D) Third

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An element with an atomic number of ___ will form a basic oxide.

 

A) 20 B) 7
C) 6 D) 17
 
Answer & Explanation Answer: A) 20

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