Sawaal

 Chemistry Questions

Popular Latest Rated
Q:

What is the third most common gas found in the air we breathe ?

A) Argon B) Neon
C) Carbondioxide D) Hydrogen
 
Answer & Explanation Answer: A) Argon

Explanation:

The most common gas people breathe from clean air is nitrogen. Air is a mixture of gases, and the air on Earth contains about 78 percent nitrogen and about 21 percent oxygen. Argon, carbon dioxide neon, helium, methane, krypton, hydrogen and xenon are in much smaller amounts.

Report Error

View Answer Report Error Discuss

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

55 21241
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 20693
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 20631
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 20072
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 19818
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 19696
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 19156
Q:

What is the IUPAC name of [Co(NH3)4Cl2]?

A) Tetra-ammine dichloro cobalt (III) chloride B) Tetra-ammine trichloro cobalt (III)
C) Tri-ammine dichloro cobalt (III) chloride D) Tetra-ammine dichloro cobalt
 
Answer & Explanation Answer: A) Tetra-ammine dichloro cobalt (III) chloride

Explanation:

The IUPAC nomenclature in organic chemistry is a systematic method that is used to name organic chemical compounds as recommended by the International Union of Pure and Applied Chemistry (IUPAC).

 

The IUPAC name of the given complex [Co (NH₃)₄Cl₂ ]Cl is - Tetra-ammine dichloro cobalt (III) chloride.

 

The complex [Co (NH₃)₄ Cl₂ ] Cl ionizes an aqueous solution to furnish the chloride ion Cl⁻ and [Co (NH₃)₄ Cl₂ ] ⁺.

Report Error

View Answer Report Error Discuss

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

18 18716