Sawaal

 Chemistry Questions

Popular Latest Rated
Q:

Which one of the following substances does not have a melting point

A) bromine B) sodium chloride
C) mercury D) glass
 
Answer & Explanation Answer: D) glass

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry

68 20163
Q:

' Yellow cake ' an item of smuggling across border s

A) A crude form of heroin B) A crude form of cocaine
C) Uranium oxide D) Unrefined gold
 
Answer & Explanation Answer: C) Uranium oxide

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry

117 20155
Q:

Cobalt - 60 is commonly used in radiation therapy because it emits

A) alpha - rays B) beta rays
C) gamma rays D) X - rays
 
Answer & Explanation Answer: C) gamma rays

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry

94 19675
Q:

Which one of the following mixture is homogeneous

A) starch and sugar B) methanol and water
C) graphite and charcoal D) calcium carbonate and calcium bicarbonate
 
Answer & Explanation Answer: B) methanol and water

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry

76 19337
Q:

The M.K.S. system was first introduced by

A) archimedes B) Eienstein
C) Newton D) Giorgi
 
Answer & Explanation Answer: D) Giorgi

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry

93 19236
Q:

Water which is suitable for drinking is called _______________ water.

 

A) hygienic B) sparkling
C) potable D) sanitary
 
Answer & Explanation Answer: C) potable

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: Bank Exams

0 18861
Q:

Sodium carbonate crystal lose water molecules this property is called

A) hygroscopy B) deliquescence
C) efflorescence D) None of these
 
Answer & Explanation Answer: C) efflorescence

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Chemistry

63 18637
Q:

Which solution is most concentrated?

A) 6 g of solute in 10 ml of solution B) 20.5 g of solute in 50 ml of solution
C) 30 g of solute in 120 ml of solution D) 2.6 g of solute in 2 ml of solution
 
Answer & Explanation Answer: D) 2.6 g of solute in 2 ml of solution

Explanation:

A concentrated solution will contain the most solute molecules per solvent molecules.

Here in the given options,

1)  6/10 = 0.6

2) 20.5/50 = 0.41

3) 30/120 = 0.25

4) 2.6/2 = 1.3

 

Hence, option D) is most concentrated.

Report Error

View Answer Report Error Discuss

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

21 18019