Question Discussion & Solution

The correct answer is Cybersecurity.

Key Points

• Cryptography is a specialized area of Cybersecurity.
• Cryptography is also defined as the study of secure communications techniques that allow only the sender and intended recipient of a message to view its contents.
• It covers the obfuscation of information in images using techniques such as microdots or merging.
• It is used to protect the written documents.
• The main purpose of cryptography appears to be making content and images undecipherable, the true goal of cryptography in an information technology context is to ensure the confidentiality and integrity of any information technology system.

Arrow moves one, two, three, four, and five sequentially anticlockwise. The arrow head change in a sequence of filled circle → Filled arrow → Open arrow

Next figure is gap of five with open arrow. 

The correct answer is Majam.

• Majam river is a part of the Arabian sea drainage system.

Key Points

• Majam river is the tributary of the Sabarmati River.
• Sabarmati River:
  • It originates near the Aravalli ranges.
  • Its Tributaries are Hathmati, Meshwa, Betrak, Majam, Baval.

Additional Information

• Sabi river is also known as the Sahibi river.
  • It drains into the river Yamuna.
• Kuntal river is also known as the Kantli river and has inland drainage.
• Mej river is a tributary of the Chambal river.

CONCEPT:

Metals Have Luster:

• Metals, in their pure state, have a shining surface. This property is called metallic luster.
• All the metals have a luster and shiny property except Lead.
• If we polish metals most of them having a reflecting surface i.e. Gold, Silver, etc.

EXPLANATION:

• When light shines on a lustrous metal, the loosely bound electrons reflect incoming light, giving the metal a shiny appearance. Therefore option 3 is correct.

The correct answer is Vitamin A.

• Vitamin A causes Night Blindness.

Key Points

• Night blindness is a type of vision impairment also known as nyctalopia. People with night blindness experience poor vision at night.
• Vitamin was first invented by FG Hopkins.  However, the term vitamin was coined by C Funk. 
• Good sources of vitamin A include cheese, eggs oily fish.

Additional Information

• Vitamin B₁₂ deficiency may lead to a reduction in healthy red blood cells (anaemia). 
• Vitamin C is found in citrus fruits and vegetables.
  • Scurvy results from a deficiency of vitamin C in the diet.
• The signs and symptoms of vitamin D deficiency include Fatigue, Bone pain, muscle weakness, muscle aches, or muscle cramps.
  • Rickets is caused due to deficiency of vitamin D
• Vitamin E deficiency can cause nerve and muscle damage loss of body movement control, muscle weakness, and vision problems.