Question Discussion & Solution

Concept-

• We know that all living organisms need food.
• Food supplies proteins, carbohydrates, fats, vitamins, and minerals, all of which we require for body development, growth, and health.
• Both plants and animals are major sources of food for us.
• We obtain most of this food from agriculture and animal husbandry.
• Cereals such as wheat, rice, maize, millets, and sorghum provide us carbohydrates for energy requirements.

Explanation-

The principal food crop of the world is wheat.

• Wheat is a Rabi crop that belongs to the Gramineae family.
• The scientific name of rice is Triticum aestivum.
• Wheat is the principal crop for millions of people in the world.
• Wheat grain is used for cooking.
• So, it is the principal cereal crop compared to rice, maize, and barley. 

Additional Information

• The major food crop of the world that belongs to the family is Gramineae. 
• Gramineae is also known as the Poaceae is the family that contains all the major crops that belong to the grass family.
• Poaceae or Gramineae is the most economically important plant family, providing staple foods from domesticated cereal crops as well as feed for meat-producing animals. 
• Examples such as maize, wheat, rice, barley, and millets, etc.

The correct answer is Magnesium Sulfate.

• Magnesium Sulfate is the industrial name of Epsom.
• Magnesium sulfate is a magnesium salt having sulfate as the counterion.
• It has a role as an anticonvulsant, a cardiovascular drug, a calcium channel blocker, an anaesthetic, a tocolytic agent, an anti-arrhythmia drug, an analgesic, and a fertilizer. It is a magnesium salt and a metal sulfate.

Key Points

• Magnesium Sulfate Formula Structure:  

Additional Information

Given:

The only one figure that satisfies the given pattern is: 

Hence, A is the correct answer.

We have drawn the figure according to the information given in the question,

(Let the turning points as shown in the figure)

Hence, she is now 15 km East from her starting point.

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.