Question Discussion & Solution

The correct answer is Mercury.

Key Points

• Mercury is the closest planet to the Sun.
• The planet probably received this name because it moves so quickly across space.
• Temperature variations on Mercury are the most extreme in the solar system ranging from 90 K to 700 K.
• Mercury is the second densest major body in the solar system, after Earth.

Important Points 

• The solar system is made up of the sun and everything that orbits around it, including planets, moons, asteroids, comets, and meteoroids.
  • It extends from the sun, called Sol by the ancient Romans, and goes past the four inner planets, through the Asteroid Belt to the four gas giants and on to the disk-shaped Kuiper Belt and far beyond to the teardrop-shaped heliopause.
  • Scientists estimate that the edge of the solar system is about 9 billion miles (15 billion kilometers) from the sun.
  • Beyond the heliopause lies the giant, spherical Oort Cloud, which is thought to surround the solar system.

Additional Information 

•  The sun is at the center of our solar system and is its largest object, accounting for 99.8% of the solar system's mass.
  • Our sun is a giant, raging ball of fire powered by nuclear reactions, and it provides the energy that sustains life on Earth.
  • The life-giving star is a yellow dwarf star made up of gas: about 91% hydrogen and 8.9% helium, according to NASA.
  • Compared with other stars, the size of the sun is relatively small and it's just one of the hundreds of billions of stars in our home galaxy, the Milky Way. 

Pattern followed is,

D + 6 = J

J + 5 = O

O + 4 = S

S + 3 = V

V + 2 = X

Hence, “O” is the correct answer.

The correct answer is Mr. Bulaki Das Kalla.

• As of June 2020, Mr. Bulaki Das Kalla is the Cabinet Minister of Culture and Archeology in Rajasthan.

Key Points

• Mr. Bulaki Das Kalla's constituency is Bikaner, Rajasthan.
• He is associated with the Indian National Congress.
• He is currently holding the portfolio of Cabinet Minister of Energy, Public Health & Engineering, Ground Water, Art, Literature, Culture & Archeology.

Additional Information

• Mr. Sachin Pilot is the Deputy Chief Minister of Rajasthan.
• Mr. Ashok Gehlot is the Chief Minister of Rajasthan.
• Mr. Shanti Kumar Dhariwal is the Minister of Local Self Government, Urban Development & Housing Department, Rajasthan.

Here the pattern is,

Sum of the three digits of a number is equal to 5.

203 – 2 + 0 + 3 = 5,

500 – 5 + 0 + 0 = 5,

600 – 6 + 0 + 0 = 6

401 – 4 + 0 + 1 = 5

The correct answer is Energy.

• Energy can neither be created nor be destroyed.

Key Points

• First Law of Thermodynamics:
  • It is also known as the Law of Conservation of Energy and states that energy cannot be created or destroyed in an isolated system.
  • Thermodynamics was discovered by Ludwig Boltzmann.
  • Albert Einstein also said that "Energy cannot be created or destroyed. It can only be changed from one form to another."

Additional Information

• Force is that external cause which when acts on a body, changes or tries to change the initial state of the body.
  • Force = mass × acceleration
  • Its S.I. unit is Newton (kg. m s-2)
• Momentum is the property of a moving body and is defined as the product of mass and velocity of the body.
• It is a vector quantity.
  • Its SI unit is kg m/s.
• The rate of doing work is called power.
  • SI unit of power is watt or Joule Per second named as a respect to the scientist James Watt.
  • It is a scalar quantity.