Explanation

When oxygen tension is 115 mm of mercury, hemoglobin saturation is 100%. 

At high oxygen tensions (like 100 mm Hg and above), essentially all available hemoglobin binding sites are occupied by oxygen molecules, resulting in complete saturation. 

Explanation

 When iodine dissolves in water in the presence of KI, it forms the I₃⁻ ion.

Explanation

Projectile motion involves:

• Horizontal motion (x-axis)

• Vertical motion (y-axis)

These two motions occur simultaneously but are independent of each other.

Therefore, projectile motion is considered two-dimensional.

Explanation

To convert radians to degrees, you multiply the number of radians by 180/π. 100 radians multiplied by 180/π is approximately 5729.58 degrees, which rounds to 5730 degrees. 

Explanation

I have been helping him for many years.

میں کئی سالوں سے اس کی مدد کر رہا ہوں۔

The sentence uses "for many years", which indicates an action that started in the past and is still continuing.

For such cases, we use the present perfect continuous tense:

$Subject+have/hasbeen+verb-ing$

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