Question Discussion & Solution

The correct answer is carbon.

Key Points

• A fullerene is an allotrope of carbon whose molecule consists of carbon atoms connected by single and double bonds so as to form a closed or partially closed mesh, with fused rings of five to seven atoms.
  • The molecule may be a hollow sphere, ellipsoid, tube, or many other shapes and sizes.
• Various allotropes of carbon are diamond, graphite, lonsdaleite, fullerene, C-540, C-70, amorphous carbon, carbon nanotube.
• Diamond and crystalline silicon are isomorphous because they both have a three-dimensional tetrahedral structure.
• Allotropy, the existence of a chemical element in two or more forms, which may differ in the arrangement of atoms in crystalline solids or in the occurrence of molecules that contain different numbers of atoms.

Additional Information

• When an element exists in more than one crystalline form, those forms are called allotropes; the two most common allotropes of carbon are diamond and graphite.
  • One of the allotropic form of a carbon is a fullerene in which “carbon atoms” are “arranged in a sphere”.
  • Each sphere has 60 carbon atoms and each carbon atom is linked by a single covalent.
  • The fullerene is considered as purest allotrope of “carbon” because they have “smooth structure” without having dangling bonds.

The correct answer is Football.

Key Points

• 'Bandodkar Gold Trophy' is associated with the sports of Football. 
• The Bandodkar Gold Cup was made of pure gold weighing several kilos.
• The trophy was instituted in 1970, by then Chief Minister, the late Dayanand Bandodkar.
• The Bandodkar Gold Cup was one of the top football tournaments in business in that era.
• The tournament was disbanded in 1994, only to be revived some years back by the Association.

 Additional Information

Rickshaw, bus and train are the means of transport.

Mobile and radio are the means of communication, so out of the given options only letter is a mean of communication.

The correct answer is Video Graphics Array.

• VGA is Video Graphics Array which is a computer chipset standard for displaying colour graphics. 
• VGA is a popular display standard developed by IBM and introduced in 1987.
• It provides 640 x 480 resolution color display screens with a refresh rate of 60 Hz and 16 colors displayed at a time. 
• VGA utilizes analog signals, which means it's only capable of lower resolutions and a lower quality display on screens.

• The VGA connector is used for display devices and is used to connect a computer to a monitor, projector, or TV.

Concept-

• A cell is defined as the smallest unit of an organism with a nucleus.
• cells are made from the same major classes of organic molecules: nucleic acids, proteins, carbohydrates, and lipids.

• Example- a unit in the tissue of an animal muscle.

Key PointsParts of cell-

Cell membrane

• It is also called the plasma membrane,
• It is found in all cells and separates the interior of the cell from the outside environment.
• It is the outermost wall in the animal cell and placed next to the cell wall in the plant cell.
• Being an outer boundary of a cell, it provides shape to the cell.

Cell wall

• A cell wall is defined as the non-living component, covering the outmost layer of a cell.
• cell wall separates the interior contents of the cell from the exterior environment.
• It also provides shape, support, and protection to the cell and its organelles.

Nucleus

• A nucleus is defined as a double-membraned eukaryotic cell organelle that contains genetic material.
• It contains the cell’s hereditary information and controls the cell’s growth and reproduction
• It is responsible for coordinating many of the important cellular activities such as protein synthesis, cell division, growth, and a host of other important functions.

Ribosomes

• The ribosome is a complex molecule made of ribosomal RNA molecules and proteins that form a factory for protein synthesis in cells.

Additional Information  Cell was discovered by Robert Hooke in 1665, the cell has a rich and interesting history that has ultimately given way to many of today's scientific advancements.