Question Discussion & Solution

Concept:

• Electroscope:
  • It is an early scientific instrument used to detect the presence of an electric charge on a body.
  • The first electroscope was a pivoted needle electroscope invented in the year 1600 by British Physicist William Gilbert.
  • It measures the charge that is dependent on the Coulomb electrostatic force that triggers the movement of the test charge.

Explanation:

• Seismograph:
  • It is an instrument that is used to detect and record earthquakes. generally, it consists of a mass attached to a fixed base. During an earthquake, the base moves and the mass does not.
• Ammeter:
  • This is a meter that is used for measuring electric current. Current is the flow of electrons whose unit is ampere.
  • Hence the instrument which measures the flow of current in ampere is called as Ampere meter or ammeter.
  • the ideal ammeter has zero internal resistance.
• Voltmeter:
  • It is an instrument used for measuring the electric potential difference between two points in an electric circuit that is connected in parallel. 
  • It usually has high resistance so that it takes negligible current from the circuit.
•  An electroscope is a correct answer.

The pattern followed is/:

For this question, the logic for "SURVIVE is VXUYLYH" is given below-

Similarly,

We will apply the same logic on MONSOON as-

Hence, Option (1) is correct.

The correct answer is Kannauj.

Important Points

Harshavardhana was an Indian Emperor, who ruled over the northern parts of India from 606 A.D to 647 A.D.

• His earliest capital was Thaneswar, present-day Haryana.
• After his accession, King Harshavardhan united the two kingdoms of Thanesar and Kannauj.
• He also shifted his capital from Thanesar to Kannauj.

Additional Information

In the 7th Century CE, the capital of Harshavardhana's Empire was Kannauj.

• In general, there was prosperity within the empire.
• Agriculture, industries and trade, both internal and external, were in a flourishing condition.
• Cities like- Peshawar and Taxila in the North-West were, of course, destroyed by the invasions of the Hunas and Mathura and Pataliputra had lost their previous significance, but Prayag (Allahabad), Banaras and Kannauj were prosperous cities within the empire.
• In the 7th century CE, the capital city, Kannauj was an extensive, prosperous and well-protected city. 
  • It had large buildings, beautiful gardens and swimming-pools. It was inhabited by the rich, cultured and highly learned people.

The correct answer is Mercury.

Key Points

• Mercury is used in thermometers because it remains in liquid form throughout a wide range of temperatures i.e -37.89 degrees Fahrenheit to 674.06 degrees Fahrenheit.
• The mercury thermometer was invented by physicist Daniel Gabriel Fahrenheit in Amsterdam.
• Mercury has a greater coefficient of thermal expansion than alcohol. 
• A thermometer with alcohol is used to measure low temperature because its freezing point is low i.e -1170C.
• It is Impossible to measure high temperatures because it’s a low boiling point.
• The thermometer with mercury cannot be used to measure the very low temperature because its freezing point is high i.e -400C.
• Mercury is the only one in liquid state at room temperature.
• It's used in thermometers because it has a high coefficient of expansion.
• It also has a high boiling point which makes it very suitable to measure higher temperatures. 
• It has a shiny appearance and doesn't stick to the glass surface of the glass.

The correct answer is Rani Kanakwati.

• Rani Kanakwati built the Jagat Shiromani temple of Amer.

Key Points

• Jagat Shiromani temple of Amer 
  • Jagat Shiromani is a Hindu temple situated in Amer, Jaipur.
  • This temple is dedicated to the Hindu gods Krishna and Vishnu.
  • It was constructed between 1599-1608 AD by Queen Kanakwati, who was the wife of King Man Singh I.
  • The temple was built in the memory of their son Jagat Singh.

​Additional Information 

• Other famous temples of Jaipur
  • ​Birla Mandir
  • Garh Ganesh
  • Shila Devi
  •  Galta Ji Temple
  • Govind Devji Temple
  • Moti Dungri Temple