Question Discussion & Solution

The correct answer is 10.

• In India, the census is done after a gap of 10 years.

Key Points

• In 1872 AD, the first Census was done in India under the rule of Lord Mayo.
• The First Official Census in India was done in 1881 AD under Lord Rippon.
  • It was called First synchronised census.
• Since 1901, it has been taking place every decade.
• Census 2011, is the 15th census and 7th after independence.
• The slogan of Census 2011 is “Our Census, Our Future”.
• India was the first country to adopt family planning in the world.

The correct answer is Magnesium.

Key Points

• The outermost shell of a Magnesium element has two electrons.
  • 12 is the atomic mass for magnesium.
  • it is in group 2 of the periodic table, which it loses, so its outer shell is full (2,8).
  • it has a charge of +2, as it still has 12 protons (positive charges) and now has only 10 electrons (negative charges).
  • Magnesium is used in products that benefit from being lightweight, such as car seats, luggage, laptops, cameras, and power tools.
  • It is also added to molten iron and steel to remove sulfur. 
• Outermost Shell :
  • This outermost shell is known as the valence shell, and the electrons found in it are called valence electrons.
  • In general, atoms are most stable, least reactive, when their outermost electron shell is full.

Additional Information

• Carbon is a chemical element with the symbol C and atomic number 6.
  • It is nonmetallic and tetravalent-making four electrons available to form covalent chemical bonds.
  • It belongs to group 14 of the periodic table. 
  • Carbon typically shares electrons to achieve a complete valence shell, forming bonds with multiple other atoms.
• Boron is a chemical element with the symbol B and atomic number 5.
  • The boron atom has only six electrons in its outer shell, leading to an electron deficiency.
  • This molecule has 12 valence shell electrons, 3 each from the B atoms, and 1 each from the six H atoms.
    • Electrons per shell: 2,3
    • Atomic Mass: 10.811 g/mol
• Chlorine atom consists of 17 protons (positively charged sub-atomic particles) in the atom's nucleus (central region), balanced by seventeen electrons (negatively charged sub-atomic particles) distributed around the nucleus.

Here, all except Nohkalikai are names of different diseases while ‘Nohkalikai’ is a waterfall in India.

The correct answer is Desert Climate.

Key Points

• According to Tharnwet, Rajasthan has four climate region-
  •  CA'w-
    • This climate region is similar to the subhumid/arid and wet-dry region.
    • Rajasthan's Udaipur, Dungarpur, Banswara, Kota, Baran, Jhalawar districts come in this region.
    • Sawana and Monsoon type flora is found in this region.
  • DA'w-
    • This climate region is similar to the semi-arid/tropical-wet climate region.
    • Rajasthan's  Barmer, Jodhpur, Churu, Jalore, Pali, Ajmer, Bundi, Sawai Madhopur districts come in this region.
    • Semi-desert flora is found in this region.
  • DB'w-
    • This climate region is similar to the mid thermal semi-dry/mixed climate region.
    • Rajasthan's Ganganagar, Hanumangarh, Bikaner, Churu districts come in this region.
    • Thorny bushes and semi-desert flora is found in this region.
  • EA'd-
    • This climate region is similar to the Desert climate region.
    • Rajasthan's Jaisalmer, Western Jodhpur, South-West Bikaner, North-West Barmer come in this region.
    • Desert flora is found in this region

President is the head of the Union Executive of a country.

Similarly,