Question Discussion & Solution

The correct option is Most of the bees in the hive are worker bees.

• Every honey bee colony comprises a single queen, a few hundred drones and several thousand worker castes of honey bees.
• A queen bee is the only female bee in the hive that gets to reproduce.
• Worker bees are all female and are all offspring of the queen. 
• Queen is a fertile, functional female, the worker is a sterile female and the drone is a male insect.
• Queen and worker develop from the fertilized egg while drone develops from an unfertilized egg.
• Further differentiation of queen and worker depends on the quality and quantity of food that is fed to the queen or worker larvae.

Explanation:

​Every beehive has one male bee and many female bees → Inorrect.

Most of the bees in the hive are worker bees → Correct

The study of honey bee is sericulture → Inorrect.

Beehives are octagonal in shapes→ Incorrect. (Hexagonal)

​Additional Information

The queen:

• ​There is only one queen in a colony and considerably larger than the members of other castes.
• Swarming is the natural method that honeybee colonies use for multiplying their colonies.
• The old queen is killed as soon as the new queen is fertilized.
• The phenomenon of raising a queen in the off-season is called supersedure.
• The normal lifespan of a queen is 3 years.

​The drone:

• ​The drones are male bees with no sting.
• They are much larger and stouter than either the queen or the workers.
• Their only function is to impregnate the young queen a task which they are unable to perform until they are about 10 days of age.
• They also help in the maintenance of hive temperature. 
• The drones are produced by unfertilized eggs of the queen, or by those workers which take up the reproductive function due to the absence of a queen in a colony.
• The normal lifespan of a drone is 57 days. 

​The worker:

• ​Smallest inhabitants of the beehive.
• They are imperfect females incapable of laying eggs.
• Worker bees primary duties are cleaning, feeding developing larva once hypopharyngeal glands develop, ripening of honey, secreting/moulding of wax into combs.
• The lifespan of a worker is about 4 weeks during the active season and 8 to 10 weeks during the less active season.
• On certain occasions when the colony is in need of a queen, some of the workers start laying eggs from which only drones are produced.
• These workers called laying workers.

The correct answer is Total Internal Reflection of Light.

Key Points

• Total Internal Reflection of Light
  • When a light ray, traveling from a denser medium towards a rarer medium is incident at the interface at an angle of incidence greater than the critical angle, then the rays are reflected back into the denser medium.
  • Practical Applications of Total Internal Reflection
  1. The working of optical fiber is based on total internal reflection.
  2. Mirage is formed due to total internal reflection.
  3. The brilliance of diamonds is mainly due to the total internal reflection of light inside them.

Additional Information

• Reflection of Light
  • The phenomenon of rebounding back of light rays in the same medium on striking a smooth surface is called reflection of light.
  • Silver metal is one of the best reflectors of light.
• Diffraction of Light
  • The phenomenon of bending of light around the corners and the spreading of light within the geometrical shadow of the opaque obstacles is called diffraction of light.
• Refraction of Light
  • Change in the path of a light ray as it passes from one medium to another is called refraction.

The correct answer is 1878.

• Vernacular press act was passed in 1878.

Key Points

• The Vernacular Press Act, 1878 came to be known as the Gagging Act as it discriminated between the English and the Vernacular Press.
• Vernacular Press Act, in British India, the law enacted in 1878 to curtail the freedom of the Indian-language (i.e., non-English) press.
• Lord Lytton passed the Vernacular Press Act 1878.
•  He also passed the Arms Act 1878 that prohibited Indians from carrying weapons of any kind without licenses.

Additional Information

• Indian National Awakening was the prime motive of vernacular newspapers.
• The law was repealed in 1881 by Lytton’s successor, Lord Ripon.
• Provisions of the Vernacular Press Act, 1878 include :
  • The publisher had to deposit the security and in case of infringement of the provision of the act the security could be forfeited.
  • If the offence reoccurred, the press equipment could be seized.

The correct answer is 2 * 1024 * 1024 Bytes.

• One thousand and twenty-four kilobytes (1024 KB) is equal to one megabyte (1 MB), where 1 MB is 10242 bytes.
  • ​So 2 Mb equals to 2 * 1024 * 1024 Bytes.

Key Points

• The cache memory
  • The cache memory is located very close to the CPU, either on the CPU chip itself.
  • It can be located on the motherboard in the immediate vicinity of the CPU.
  • So data can be read from it (and written to it)more quickly than with normal RAM. 

Additional Information

• Cache
  • A cache is a special storage space for temporary files that makes a device, browser, or app run faster and more efficiently. 
• There are three general cache levels:
  • L1 cache, or primary cache:
    • It is extremely fast but relatively small and is usually embedded in the processor chip as CPU cache.
  • L2 cache, or secondary cache:
    • It ​is often more capacious than L1.
  • Level 3 (L3) cache 
    • It is a specialized memory developed to improve the performance of L1 and L2.

Oboe is a musical instrument. Similarly, scalpel is a surgical instrument used in surgeries.