# Chemistry Questions

Q:

The purest form of iron is

 A) wrought iron B) steel C) pig iron D) nickel steel

Explanation:

Wrought Iron is the purest form of iron. It contains 0.12 to 0.25% carbon and so it is the purest form of iron.

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

469 68542
Q:

Hydrogen bomb is based on the principle of

 A) nuclear fission B) nuclear fusion C) natural radioactivity D) artificial radioactivity

Explanation:

Hydrogen Bomb is based on the principle of Nuclear Fusion.

• Nuclear fusion is a reaction in which two or more atomic nuclei are combined to form one or more different atomic nuclei and subatomic particles.

• The difference in mass between the reactants and products is manifested as either the release or absorption of energy.

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

346 60492
Q:

Which of the following is a non metal that remains liquid at room temperature  ?

 A) Chlorine B) Phosphorous C) Bromine D) Helium

Explanation:

The chemical element with the atomic number 35, Bromine is a non metal that remains liquid at room temperature. Mercury also remains liquid at room temperature but it is a metal. Bromine is the third lightest halogen.

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

99 23368
Q:

Brass gets discoloured in air because of the presence of which of the following gases in air  ?

 A) Hydrogen sulphide B) Oxygen C) Nitrogen D) Carbon dioxide

Explanation:

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

74 21372
Q:

What is the structure of IF7 ?

 A) Triagonal bipyramid B) Pentagonal bipyramid C) Square pyramid D) tetrahedral

Explanation:

In IF7 out of 7 Flourine atoms 5 of them are placed on a plane in Pentagon shape .In remaining 2 flourines one is placed above the plane and other below the plane each at 90 degrees

Filed Under: Chemistry

128 20944
Q:

Among the given nutrients, milk is a poor source of

 A) Calcium B) Protein C) Vitamin C D) Carbohydrates

Explanation:

Filed Under: Chemistry

90 18060
Q:

Among the following the maximum covalent character is shown by the compound

(1)$MgCl2$

(2)$FeCl2$

(3)$SnCl2$

(4) $AlCl3$

 A) Option 1 B) Option 2 C) Option 3 D) Option 4

Explanation:

According to Fajans rule, cation with greater charge and smaller size favours covalency.

Filed Under: Chemistry
Exam Prep: AIEEE

26 17817
Q:

Name the Scientist who stated that matter can be converted into energy

 A) Boyle B) Lavoisier C) Avogadro D) Einstein