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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



Explanation:
Subject: Chemistry
Exam Prep: Bank Exams
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One of the techniques used for desalination of sea water is

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The major ingredient of sweetened soft drink is

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___ is used as a stabilizer in ice cream.

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Answer & Explanation Answer: A) Gelatin

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Ionic compounds ______.

 

I. have high boiling point

II. have high melting point

III. conduct electricity in solution

 

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

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Which type of Ethanol is made from sources like molasses, sugarcane, sugar beet, sorghum and edible oil seeds?

 

A) 2G ethanol B) 1G ethanol
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Answer & Explanation Answer: B) 1G ethanol

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Alkali metals are assigned which group in the Modern Periodic Table?

A) Second group B) Eighteenth group
C) Third group D) First group
 
Answer & Explanation Answer: D) First group

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NaCl is a salt which is made up of

A) Strong acid and weak base B) Weak acid and weak base
C) Strong acid and strong base D) Weak acid and strong base
 
Answer & Explanation Answer: C) Strong acid and strong base

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Q:

Which of the following statements is Incorrect?

A) Atomic size increases from top to bottom B) All the elements of a group have same valency
C) Isotopes of the same elements are placed in the same group D) Atomic radius generally decreases from left to right
 
Answer & Explanation Answer: C) Isotopes of the same elements are placed in the same group

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