Question Discussion & Solution

i) Shyam travels 5 km towards East and turns left and moves 6 km further.

ii) He then turns right and moves 9 km.

iii) Finally, he turns once again to his right and moves 6 km.

Drawing the Diagram as per the given information:

AB = 5 km

DE = BC = 9 km

Distance between the starting point and the final point = AB + BC = 5 + 9 = 14 km

Hence, the correct answer is "14 km".

The correct answer is Minamata.

Key Points

• Minamata disease is a disease caused by severe mercury poisoning.
• It is a neurological disease.
• Symptoms of the disease:-
  • Ataxia, general muscle weakness, numbness in the hands and feet, loss of peripheral vision, and damage to hearing and speech.

Additional Information

• Due to mining, Itai-Itai disease was caused by cadmium poisoning.
• Symptoms of Methemoglobinemia:- 
  • Headache, shortness of breath, dizziness, nausea, blue-colored skin, and poor muscle coordination.
• Poliomyelitis is caused by infection with a member of the genus Enterovirus. It is known as poliovirus.

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 In 1956.

• In 1956 the "Immoral Traffic (Prevention) Act" was enacted.

Key Points

• Immoral Traffic (Prevention) Act
  • This Act may be called the Immoral Traffic (Prevention) Act, 1956.
  • It extends to the whole of India.

Additional Information

• Immoral Traffic (Prevention) Act
  • ​In pursuance of the International Convention signed by India in 1950 pertaining to the Prevention of Immoral Trafficking, a comprehensive Act called Immoral Traffic (Prevention) Act was enacted in 1956.
  • It makes the sexual exploitation of male and female a cognizable offence.

The correct answer is ​Sodium benzoate.

Key Points

• Sodium benzoate is a preservative that is most widely used in acidic foods such as salad dressings, carbonated drinks, jams and fruit juices, pickles, condiments, and yoghurt toppings.
• Food preservation is a method to protect food from unwanted microbial growth and is done to preserve food for a longer time.
• Sodium benzoate is a widely used preservative found in many foods and soft drinks to prolong shelf life.
• It is an odourless, crystalline powder made by combining benzoic acid and sodium hydroxide.
• Benzoic acid is a good preservative on its own, and combining it with sodium hydroxide helps it dissolve in products.
• Sodium benzoate does not occur naturally, but benzoic acid is found in many plants, including cinnamon, cloves, tomatoes, berries, plums, apples, and cranberries.

Additional Information