Sawaal

 Chemistry Questions

Popular Latest Rated
Q:

Which one of the following elements is the poorest conductor of heat

A) sodium B) lead
C) zinc D) mercury
 
Answer & Explanation Answer: B) lead

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry

45 13811
Q:

___ is the number of shells for elements of the 3rd period.

 

A) 1 B) 0
C) 2 D) 3
 
Answer & Explanation Answer: D) 3

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: Bank Exams

0 13498
Q:

Lime water becomes white due to which gas?

 

A) CO2 B) O2
C) NO2   D) N2
 
Answer & Explanation Answer: A) CO2

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: Bank Exams

1 13222
Q:

Carbon dioxide is one of the gases that cause the _________.

 

A) greenhouse effect   B) ozonification  
C) oven phenomenon   D) sunburn  
 
Answer & Explanation Answer: A) greenhouse effect  

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: Bank Exams

0 13215
Q:

Which is the gas used for making vegetables and vanaspathi from vegetable oils?

A) Hydrogen B) Nitrogen
C) Argon D) Helium
 
Answer & Explanation Answer: A) Hydrogen

Explanation:

Hydrogen gas is used for making vegetables and vanaspathi from vegetable oils.

As it is colourless, odourless, tasteless, flammable gaseous substance, it is added to oils to make them more solid or spreadable.

The use of hydrogenation helps to prolong the shelf life of the food and maintain flavour stability.

Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: AIEEE , Bank Exams , CAT , GATE
Job Role: Analyst , Bank Clerk , Bank PO

25 13109
Q:

Which species is a conjugate acid of OH- ?

 

A) H+ B) O2- 
C) OH D) H2O
 
Answer & Explanation Answer: D) H2O

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: AIEEE , Bank Exams

4 13091
Q:

In nuclear reactor,Chain reaction is controlled by introducing

A) cadmium rod B) iron rod
C) platinum rod D) graphite rod
 
Answer & Explanation Answer: A) cadmium rod

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry

34 13012
Q:

Elements having same atomic numbers but different mass number are called ______.

 

 

A) isotones B) Isotopes
C) isomopes D) isobar
 
Answer & Explanation Answer: B) Isotopes

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: Bank Exams

0 12927