Question Discussion & Solution

The correct answer is Khejri.

Key Points
Khejri:

• It is known as Kalp Vriksha of desert.
• Prosopis cineraria is the scientific name.
• It was declared a state tree in the year 1983.
• It has a nitrogen-fixing tree which enhances the fertility of the soil.
• In 1988, the Indian Postal Department issued a Postal Stamp of paisa 60 on Khejri. 
• Khejri trees are found in the tropical thorny forest.

The correct answer is the Pie Chart.

• In Ms-Excel, pie charts show percentages adding up to 100%.

​Key Points

• Pie charts
  • ​Pie charts are used to show parts of a whole.
  • Specifically, pie charts illustrate meaningful relationships between percentages or parts of 100%.
  • If the data which we want to display add up to 100%, a pie chart is the best choice.
  • When creating a pie chart, the description of each section is called the category, and the number connected to the category is called the value.

Additional Information

• Column Chart
  • ​A column chart is a graphic representation of data. 
  • Column charts display vertical bars going across the chart horizontally, with the values axis being displayed on the left side of the chart.
  • Column Charts are Used to Compare Data.
• Bar Chart
  • ​Bar graphs are used to compare things between different groups or to track changes over time.
  • A bar chart is a way of summarizing a set of categorical data (continuous data can be made categorical by auto-binning).
• Bubble Chart
  • ​Bubble charts are often used to present financial data.
  • It is an extension of the scatter plot used to look at relationships between three numeric variables.

The correct answer is Vitamin C.

Important Points

• Scurvy is a nutritional disorder of humankind.
  • Scurvy is caused by the deficiency of Vitamin C
  • Ascorbic acid is the chemical name of vitamin C.
  • Vitamin C is the first artificially synthesized vitamin.
  • Vitamin C is essential for the healing of wounds, repair, and maintenance of cartilage, bone, and teeth.
  • Vitamin C deteriorated through cooking and canning of food.

Additional Information 

• Xerophthalmia and night blindness are the deficiency diseases of Vitamin A.
• Rickets is the deficiency diseases of Vitamin D.
• Hemorrhage is the deficiency diseases of Vitamin K.

Concepts:

Physical Properties of Metals and Non-metals

Explanation:

• Iodine is lustrous. This is an exception to the physical properties of non - metals. Iodine is non-metal and non - metals have dull appearance. 
• Sodium is metal. Metals are usually hard so this is also an exception. 
• Graphite conducts electricity. This is an exception as graphite is a form of carbon and it is non - metal. 
• Copper being metal is not an exception as it is metals and metals are good conductors of heat. 

So the correct option is 'Copper is a good conductor of heat.'

Joule is the SI unit of Energy.

Similarly,

Pascal is the SI unit of pressure.

Hence, pressure is the correct answer.

Additional Information 

* S.I Unit of Resistance is the Ohm.

* S.I Unit of Energy is Joule.

* S.I Unit of Volume is the Cubic meter.

* S.I Unit of Force is Newton.

* S.I Unit of Area is the Square meter.

* S.I Unit of Temperature is Kelvin.
Important Points 

There is a total of 9 S.I units.

1. 7 of them are fundamental units.

2. 2 of them are Supplementary units.