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



Explanation:
Subject: Chemistry
Exam Prep: Bank Exams
Q:

Among chemical properties, Mendeleev concentrated on the compounds formed by the elements with

A) Hydrogen and Oxygen B) Hydrogen and Sodium
C) Carbon and Hydrogen D) Carbon and Sodium
 
Answer & Explanation Answer: A) Hydrogen and Oxygen

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: AIEEE , Bank Exams

0 954
Q:

Which was not produced by volcanic outgassing?

A) Carbon dioxide B) Water vapor
C) Sulfur D) Oxygen
 
Answer & Explanation Answer: D) Oxygen

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: Bank Exams

0 958
Q:

According to an early Indian philosopher everything is made up of ___ basic elements.

A) 2 B) 4
C) 3 D) 5
 
Answer & Explanation Answer: D) 5

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: Bank Exams

0 772
Q:

Which of the following is an amphoteric oxide?

A) Aluminium oxide B) Iron oxide
C) Magnesium oxide D) Carbon dioxide
 
Answer & Explanation Answer: A) Aluminium oxide

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: Bank Exams

0 757
Q:

Tooth decay starts when the pH of the mouth is lower than

A) 5.7 B) 5.5
C) 5.6 D) 5.4
 
Answer & Explanation Answer: B) 5.5

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: Bank Exams

0 1131
Q:

What happens as we go down the group in the periodic table?

A) The number of shells decreases B) Valence electrons decreases
C) The number of shells increases D) Atomic size decreases
 
Answer & Explanation Answer: C) The number of shells increases

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: Bank Exams

0 750
Q:

In the process of ___, the iron is protected by a coating of zinc.

A) greasing B) alloying
C) galvanisation D) anodising
 
Answer & Explanation Answer: C) galvanisation

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: Bank Exams

0 694
Q:

Which of the following is NOT a property of acids?

A) Acids form salts with bases B) Acids have bitter taste
C) Acids have sour taste D) Acids turn blue litmus red
 
Answer & Explanation Answer: B) Acids have bitter taste

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: Bank Exams

0 706