Question Discussion & Solution

The correct answer is a Female egg cell.

The female egg cell is the largest cell in the human body. The nerve cell is the longest cell in the body.

• The egg cell or ovum is the largest cell in the human body.
• It has a diameter of about 0.1 mm.
• A nerve cell is the longest cell in the human body.
• Muscle cells are the primary cells responsible for the movement of the body. There are three types of muscle cells found in our body, namely ;
  • Skeletal muscle or voluntary muscle.
  • Smooth muscle or involuntary muscle.
  • Cardiac muscle.

Mistake Points

• The smallest cell is Mycoplasma (PPLO-Pleuro pneumonia-like organisms).
• It is about 10 micrometres in size.
• The largest cell is an egg cell of ostrich.
• The longest cell is the nerve cell.
• The largest cell in the human body is the female ovum.
• The smallest cell in the human body is the male gametes, that is, sperm.

Least possible diagram is:

I. Some nice are rich → True

II. Some bad are nice → False (Possible but not definite)

III. All poor are nice → False (Possible but not definite)

Total number of boxes of matchsticks = 3600

Total number of cartons = 10

Let the number of packets in one carton be x.

⇒ Number of packets in 10 cartons = 10x.

Number of boxes of matchstick in a packet = 30

⇒ Number of boxes of matchstick in 10x packets = 30(10x) = 300x

So, we have:

Total number of boxes = Number of boxes of matchstick in 10x packets

⇒ 300x = 3600

⇒ x = 12

Correct Option -2

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Option 3 is correct, i.e. p-block.

• Modern Periodic Table:
  • The Modern Periodic Table is classified into the following elements - p-block, s-block, d-block, and f-block.
  • The p-block elements include chalcogens, pnictogens, halogens, inert gases.
    • The 18^th group is known as Inert gas, zero groups, Nonreactive gases.
    • The 17^th group is known as Halogen.
    • The 16^th group is known as Chalcogen.
    • The 15^th group known as Pnictogen.
    • Pnictogen group refers to the choking property of nitrogen gas (as opposed to air, which contains oxygen as well as nitrogen).
    • Nitrogen family elements consist of atoms having 5 electrons in their outer energy level. Two of the electrons are in the s subshell, with 3 unpaired electrons in the ​p subshell.
  • The s-block elements include alkali metals and alkaline earth metals. 
  • The d-block elements include Transition elements.
  • The f-block elements include Inner Transition Elements.